CN114382196B - Cast-in-situ area steel bar construction method for integrally assembled shear wall structure - Google Patents
Cast-in-situ area steel bar construction method for integrally assembled shear wall structure Download PDFInfo
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- CN114382196B CN114382196B CN202210154153.6A CN202210154153A CN114382196B CN 114382196 B CN114382196 B CN 114382196B CN 202210154153 A CN202210154153 A CN 202210154153A CN 114382196 B CN114382196 B CN 114382196B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 247
- 239000010959 steel Substances 0.000 title claims abstract description 247
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 160
- 238000010276 construction Methods 0.000 title claims abstract description 60
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims description 197
- 230000002787 reinforcement Effects 0.000 claims description 105
- 230000003014 reinforcing effect Effects 0.000 claims description 78
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 41
- 238000012545 processing Methods 0.000 claims description 23
- 229910000746 Structural steel Inorganic materials 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 9
- 108010068370 Glutens Proteins 0.000 claims description 5
- 235000021312 gluten Nutrition 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 description 10
- 238000013461 design Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000005477 standard model Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of building tools, in particular to a construction method for cast-in-situ area steel bars of an integrally assembled shear wall structure, which adopts software to deepen connection nodes between prefabricated components and cast-in-situ sections to build BIM models, builds 6 node basic models, adopts the 6 node basic models to simulate the steel bars of the cast-in-situ sections and the reserved steel bars of the components according to the actual conditions of the building, analyzing structural stress, simulating working conditions such as the size of the steel bars, determining the connection mode of the steel bars of the cast-in-situ section and the reserved members, and then simulating the installation flow of the steel bars, so that the situation that construction is inconvenient due to collision between the reserved steel bars of the members and the steel bars of the cast-in-situ section is avoided, the situation that the construction sequence of the steel bars of the cast-in-situ structure is disordered is avoided, construction efficiency is improved, and engineering difficulty is reduced.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a construction method of a reinforcing steel bar of a cast-in-situ structure of a connecting member in an integrally assembled shear wall structure.
Background
The assembled structure is one of important directions of development of the building structure in China, and compared with the construction of the cast-in-place concrete structure, the assembled concrete structure is prefabricated and processed in a factory to produce concrete members, and the concrete members are transported to a construction site by a transport tool and are hoisted in place by a tower crane or a hoisting machine. This can improve the efficiency of construction, reduces job site wet operation, is favorable to green construction. At present, the assembled shear wall is widely popularized in an assembled building structure due to the advantages of good integrity, excellent bearing capacity, high rigidity and the like.
The prefabrication rate of the assembled shear wall structure building at the present stage is up to more than 40%, but the volume of the assembled shear wall structure building is still about 60% of that of the cast-in-situ structure. In the connection area of the prefabricated component and the cast-in-situ structure, the construction method of the cast-in-situ structure steel bar is different from the traditional full cast-in-situ structure, such as how the steel bar is turned over, how the steel bar is reserved for connection with the component, and how the steel bar is installed in order, which are all new problems in the construction process of the cast-in-situ area of the current assembly structure.
Because the cast-in-place area steel bar construction with the assembled structure is carried out after the cast-in-place area steel bar construction with the assembled structure is carried out at the present stage, the cast-in-place area steel bar construction is difficult to be standardized and unified, and the construction standards are inconsistent.
The traditional construction sequence of the wall column steel bar is as follows: reserving wall column steel bars, penetrating stirrups, connecting the wall column steel bars, and binding the stirrups. The traditional beam slab reinforcement construction sequence is: beam reinforcement binding, floor bottom reinforcement binding, reinforcement split heads laying and surface reinforcement binding. When cast-in-situ structural steel bars of connecting members in the integral assembled shear wall structure are constructed according to the traditional steel bar construction sequence, the conditions of inconvenient construction caused by collision between the reserved steel bars of the members and the cast-in-situ structural steel bars and the conditions of disordered construction sequence of the cast-in-situ structural steel bars can occur, so that the construction period is delayed.
As in chinese application CN113738023a, a semi-prefabricated semi-cast-in-place constructional column and its assembly structure and construction method are disclosed, which comprises an upper structural beam, a constructional column and a lower structural beam, wherein, a vertical downward positioning steel bar is pre-embedded on the upper structural beam, the constructional column is the semi-prefabricated semi-cast-in-place constructional column, a constructional column planting bar is implanted on the lower structural beam, the positioning steel bar is placed in a reserved groove of the column, the bottom of the supporting steel bar is supported on the lower structural beam, the vertical steel bar of the column is connected with the constructional column planting bar, and the reserved groove is filled with concrete, and the cast-in-place section is filled with concrete.
As another example, chinese invention CN106682266a discloses a method for processing reinforcing bars at beam joints of cross steel columns based on BIM, by performing simulation lofting on reinforcing bars of each cross steel column Liang Chuzhu and beam in advance by using BIM technology, setting support plates at proper positions of flanges in advance, setting connection plates at proper positions between webs, and setting arrangement of main bars with different diameters of the beam according to lengths of the support plates and the connection plates, so that the arrangement of the beam and the column reinforcing bars can be optimized while the consumption of the reinforcing bars is reduced, and the length of weld joints of the beam main bars above the support plates is ensured to meet the requirements.
However, the above patent applications all have a certain problem that the traditional wall column reinforcement construction and the assembly type reinforcement construction are not completely distinguished, so that delay and disorder of construction period may be caused by lack of standardization during construction, which is not beneficial to improving the construction efficiency.
The application aims to solve the problems, standardize the construction model between the prefabricated part and the cast-in-situ section, thereby improving the construction efficiency and shortening the construction period by constructing according to the standardized model during construction.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and designs a cast-in-situ structural reinforcement construction method for a connecting member in an integrally assembled shear wall structure.
The invention is realized by the following technical scheme:
The application discloses a cast-in-situ structural reinforcement construction method of a connecting member in an integrally assembled shear wall structure.
A cast-in-situ structural reinforcement construction method of a connecting member in an integrally assembled shear wall structure comprises the following steps of;
The method comprises the following steps:
1) Determining a construction unit, and deeply establishing a BIM integral structure model by adopting revit software to connect nodes between prefabricated components and cast-in-situ sections in the construction unit;
2) Establishing a basic model, wherein the basic model comprises at least one cast-in-situ structural reinforcement model as follows: the prefabricated wall board is a straight-shaped cast-in-situ structural steel bar model, an L-shaped cast-in-situ structural steel bar model, a T-shaped cast-in-situ structural steel bar model, a steel bar model of a cast-in-situ structural floor slab between adjacent prefabricated composite floor slabs, a steel bar model between the prefabricated composite floor slab and the cast-in-situ structural floor slab, and a steel bar model between the prefabricated composite floor slab and the prefabricated wall board;
3) According to the BIM integral structure model, adopting a basic model to replace corresponding connection parts in the BIM integral structure model one by one;
4) Processing and analyzing reinforcing steel bars of first, L and T nodes between prefabricated wall boards, processing and analyzing a post-cast concrete section for a connecting node between adjacent prefabricated composite floor boards, processing and analyzing the connection between the prefabricated composite floor boards and a cast-in-situ structural floor board, and processing and analyzing connecting reinforcing steel bars between the prefabricated composite floor boards and the prefabricated wall boards;
the processing analysis is carried out on the steel bars of the "one", "L", "T" type nodes among the prefabricated wall boards, and the processing analysis comprises the following steps:
S1, analyzing the problem of steel bar overturning from a BIM integral structure model, and simulating stirrups and vertical bars of a cast-in-situ section; the simulation component reserves the steel bar, and determines the connection mode of the prefabricated wallboard and the cast-in-situ section steel bar;
s2, simulating a steel bar installation flow, and deepening a member reserved steel bar into an open steel bar based on a principle of convenient steel bar installation, so as to facilitate adjustment when the member reserved steel bar is connected with the cast-in-situ section stirrup;
S3, constructing the cast-in-situ section wall steel bars, namely reserving cast-in-situ section vertical steel bars on the floor, hoisting the prefabricated wall, penetrating stirrups on the reserved vertical steel bars, welding the vertical steel bars, adjusting the positions of the stirrups, connecting the stirrups with the reserved opening steel bars of the component, and binding the steel bars;
processing and analyzing the connection node between adjacent precast composite floor slabs for a post-cast concrete section, comprising the following steps:
s1, analyzing the problem of steel bar overturning from a BIM integral structure model, simulating reserved steel bars of a composite floor slab and cast-in-situ section plate bottom steel bars, and determining the width of a post-cast section between plates according to the construction angle of the steel bars;
s2, determining the length and the bending anchor angle of the reserved steel bars according to the stress angle of the structure, and simulating the connection mode of the steel bars;
S3, simulating a steel bar installation flow, and constructing cast-in-situ section steel bars between the composite floor slabs according to the following steps: setting up a die carrier, positioning and installing the bottom ribs of the cast-in-situ section building plate, hoisting the composite floor slab in place, binding reserved reinforcing steel bars of the cast-in-situ building plate and the composite slab, and binding the gluten of the floor slab.
The method for processing and analyzing the connection between the prefabricated composite floor slab and the cast-in-situ structural floor slab comprises the following steps:
s1, determining the thickness of a cast-in-situ floor slab, and dividing the cast-in-situ floor slab into cast-in-situ floor slabs with the same thickness and different thicknesses according to the thickness difference of the cast-in-situ floor slab to be connected; analyzing the problem of steel bar sample turning from the BIM integral structure model;
s2, when the composite slab is connected with a cast-in-situ floor slab with the same thickness, the composite slab throws away the reserved hooked steel bar with the thickness of more than or equal to 280 mm;
s3, when the composite slab is connected with cast-in-situ floor slabs with different thicknesses, the reserved straight ribs are thrown out of the composite slab, and the reinforcing steel bars in the cast-in-situ slab region are correspondingly bent;
Processing and analyzing connection reinforcing steel bars between the prefabricated composite floor slab and the prefabricated wallboard; the method comprises the following steps:
And analyzing from the BIM integral structure model, and determining whether the overlap joint length of the laminated slab and the top of the prefabricated wallboard, the length of the reserved reinforcing steel bar of the laminated slab and the anchoring form and the position of the reserved reinforcing steel bar of the laminated slab and the position of the reserved reinforcing steel bar of the prefabricated wallboard conflict.
Secondly, the invention also claims a prefabricated wallboard 'I' -shaped cast-in-situ structure reinforcing bar model, a prefabricated wallboard 'L' -shaped cast-in-situ structure reinforcing bar model, a prefabricated wallboard 'T' -shaped cast-in-situ structure reinforcing bar model, a reinforcing bar model of a cast-in-situ structure floor slab between adjacent prefabricated composite floor slabs, a reinforcing bar model between the prefabricated composite floor slab and the cast-in-situ structure floor slab, and a reinforcing bar model between the prefabricated composite floor slab and the prefabricated wallboard.
The prefabricated wall plate type cast-in-situ structure steel bar model comprises a first prefabricated wall body and a second prefabricated wall body, wherein the first prefabricated wall body and the second prefabricated wall body are arranged in the vertical direction and are parallel in the horizontal direction to form a straight line shape, reserved U-shaped steel bars are arranged on the first prefabricated wall body and the second prefabricated wall body, hooks in the horizontal direction are arranged at the outer ends of the U-shaped steel bars, connecting steel bars are arranged at positions close to the U-shaped steel bars, the connecting steel bars are of rectangular structures, vertical steel bars are arranged at the top points of the rectangular structures, and vertical steel bars are also arranged in the hooks at the outer ends of the U-shaped steel bars; the U-shaped steel bars, the connecting steel bars and the vertical steel bars are firmly tied up at the connecting positions.
The connecting ribs are 5-20mm, preferably 8-12mm, more preferably 10mm from the prefabricated wall body, the number of the connecting ribs is set according to the height of the actual prefabricated wall body, and in some cases, the connecting ribs can also comprise inclined connecting ribs except parallel connecting ribs in order to enhance the strength of the connecting ribs and strengthen the strength of the cast-in-situ section wall body;
the U-shaped steel bar hooks extend out of the prefabricated wall bodies 240-260mm, preferably 250mm, and the length of a cast-in-situ section between the first prefabricated wall bodies and the second prefabricated wall bodies which are arranged in a straight line is preferably more than or equal to 520mm;
Waterproof rain cloth is further arranged between the cast-in-situ section and the prefabricated wall body, the waterproof rain cloth is arranged in the outdoor direction, and the width is selected to be 100-200mm, preferably 140-260mm, and more preferably 150mm.
The utility model provides a prefabricated wallboard "L" style of calligraphy cast-in-place structure bar model, includes first prefabricated wall body, second prefabricated wall body, and first prefabricated wall body and second prefabricated wall body all vertical direction setting, and be L style of calligraphy side by side in the horizontal direction, first prefabricated wall body and second prefabricated wall body all are provided with reserved stay U type reinforcing bar, and U type reinforcing bar outer end department is provided with the crotch of horizontal direction, and the department sets up the connecting bar next to U type reinforcing bar, the connecting bar is rectangular structure connecting bar and takes the L shape to arrange, and the connecting bar has square or rectangular intersection position, and rectangular structure's summit department all is provided with vertical reinforcing bar, and connecting bar's square or rectangular intersection position all is provided with vertical reinforcing bar, all is provided with vertical reinforcing bar in the U type reinforcing bar outer end crotch equally; the U-shaped steel bars, the connecting steel bars and the vertical steel bars are firmly tied up at the connecting positions.
The connecting ribs are 5-20mm, preferably 8-12mm, more preferably 10mm from the prefabricated wall body, the number of the connecting ribs is set according to the height of the actual prefabricated wall body, and in some cases, the connecting ribs can also comprise inclined connecting ribs except parallel connecting ribs in order to enhance the strength of the connecting ribs and strengthen the strength of the cast-in-situ section wall body;
the U-shaped steel bar hooks extend out of the prefabricated wall bodies 240-260mm, preferably 250mm, and the length of a cast-in-situ section between the first prefabricated wall bodies and the second prefabricated wall bodies which are arranged in a straight line is preferably more than or equal to 520mm;
Waterproof rain cloth is further arranged between the cast-in-situ section and the prefabricated wall body, the waterproof rain cloth is arranged in the outdoor direction, and the width is selected to be 100-200mm, preferably 140-260mm, and more preferably 150mm.
The utility model provides a prefabricated wallboard cast-in-place structure reinforcing bar model of "T" style of calligraphy, includes first prefabricated wall body, second prefabricated wall body and third prefabricated wall body, and first prefabricated wall body and second prefabricated wall body and third prefabricated wall body all set up vertical direction, and first prefabricated wall body and second prefabricated wall body form the horizontal arrangement of T style of calligraphy, and third prefabricated wall body and horizontal arrangement form the T style of calligraphy and arrange, first prefabricated wall body, second prefabricated wall body and third prefabricated wall body all are provided with keep somewhere U type reinforcing bar, are provided with the crotch of horizontal direction in U type reinforcing bar outer end department, set up the connecting reinforcement in the next to U type reinforcing bar department, the connecting reinforcement is rectangular structure connecting reinforcement and is T shape and arrange, T style of calligraphy horizontal connecting reinforcement and T style of calligraphy vertical connecting reinforcement have square or rectangular intersection position, and the summit department of rectangular structure all is provided with vertical reinforcing bar, and the square or rectangular intersection position of connecting reinforcement all is provided with vertical reinforcing bar in the U type reinforcing bar outer end crotch of same; the U-shaped steel bars, the connecting steel bars and the vertical steel bars are firmly tied up at the connecting positions.
The connecting ribs are 5-20mm, preferably 8-12mm, more preferably 10mm from the prefabricated wall body, the number of the connecting ribs is set according to the height of the actual prefabricated wall body, and in some cases, the connecting ribs can also comprise inclined connecting ribs except parallel connecting ribs in order to enhance the strength of the connecting ribs and strengthen the strength of the cast-in-situ section wall body;
the U-shaped steel bar hooks extend out of the prefabricated wall body by 240-260mm, preferably 250mm;
The cast-in-place structure model between the adjacent prefabricated composite floor slabs comprises a first composite floor slab and a second composite floor slab, wherein the first composite floor slab and the second composite floor slab are arranged in the same plane, a cast-in-place section is arranged between the first composite floor slab and the second composite floor slab, left transverse hook reinforcements are arranged in the first composite floor slab and the second composite floor slab, the transverse hook reinforcements extend out of the composite floor slabs to the cast-in-place section, plate bottom longitudinal reinforcements are further arranged in the planes of the hook reinforcements and perpendicular to the transverse hook reinforcements, plate bottom longitudinal reinforcements and transverse hook reinforcements are bundled, plate reinforcement bars are further arranged at the upper parts of the first composite floor slab and the second composite floor slab, the plate reinforcement bars comprise transverse plate reinforcement bars and longitudinal plate reinforcement bars, and the plate reinforcement bars are positioned at the upper parts of the transverse hook reinforcements and the plate bottom longitudinal reinforcements;
In the cast-in-situ structure model between the composite floor slabs, the width of a cast-in-situ section arranged between the first composite floor slab and the second composite floor slab is preferably 200-400mm, preferably 250-350mm, preferably 300mm, one end of a transverse hook steel bar reserved in the composite floor slab is positioned in the composite floor slab, and the distance between the other end of the transverse hook steel bar and the other composite floor slab is 10-20mm.
The connecting model comprises a first composite floor slab and a cast-in-situ slab adjacent to the first composite floor slab, wherein an indwelling transverse hook steel bar is arranged in the first composite floor slab and protrudes out of one end of the interior of the first composite floor slab by a distance, a slab reinforcing bar is further arranged on the upper part of the first composite floor slab and extends to the interior of the cast-in-situ slab, a lower slab reinforcing bar connected with the transverse hook steel bar of the first composite floor slab is further arranged in the cast-in-situ slab, and longitudinal slab reinforcing bars are arranged on the transverse hook steel bar and the slab reinforcing bar;
Preferably, the length of the transverse hooked steel bar arranged in the first composite floor slab is preferably greater than or equal to 260mm, and is preferably 280mm,300mm and the like.
In some cases, the method further comprises the step of connecting the prefabricated composite floor slab and the cast-in-situ floor slab in a model, wherein the height of the first composite floor slab is not equal to the height of the cast-in-situ section; the application also claims a connecting model between the prefabricated composite floor slab and the cast-in-situ floor slab with different thickness, which comprises a first composite floor slab and cast-in-situ slabs adjacent to the first composite floor slab with different thickness, wherein the first composite floor slab is internally provided with left-behind transverse reinforcing bars, a first transverse reinforcing bar, a second transverse reinforcing bar and a third transverse reinforcing bar; the first transverse reinforcement extends from the cast-in-situ section to the edge of the first composite floor slab, which is close to the cast-in-situ section, and is bent for the first time in the vertical upward direction, a group of transverse reinforcement is bent for the second time in the horizontal direction in a third transverse reinforcement plane, and the bent first transverse reinforcement extends to a distance in parallel along the upper part of the first composite floor slab;
The second transverse reinforcement is arranged close to the upper surface of the first composite floor slab, the second transverse reinforcement is parallel to the first transverse reinforcement, a third transverse reinforcement is arranged at the upper part of the first composite floor slab, extends to the cast-in-place section along the first composite floor slab at the upper part of the first composite floor slab, is vertically bent downwards at a position h away from the edge of the first composite floor slab, is bent for the second time in the horizontal direction when reaching the transverse reinforcement plane, and is coplanar with the transverse reinforcement after bending; and h is the total thickness of the floor slab comprising the composite floor slab.
Preferably, the bending positions of the first transverse reinforcing bars and the third transverse reinforcing bars are respectively provided with a matched longitudinal reinforcing bar, and the longitudinal reinforcing bars can be reasonably arranged along the transverse reinforcing bars according to specific requirements.
In some cases, the prefabricated wall comprises a connecting model between the composite floor slab and the prefabricated wall body, wherein the connecting model comprises a first composite floor slab, a second composite floor slab and the prefabricated wall body for supporting the composite floor slab, the first composite floor slab and the second composite floor slab comprise first transverse reinforcing bars extending from the inside and second transverse reinforcing bars parallel to the first transverse reinforcing bars and positioned at the upper parts of the first composite floor slab and the second composite floor slab, the inside of the prefabricated wall body is provided with first vertical reinforcing bars extending from the inside, and the first vertical reinforcing bars and the first transverse reinforcing bars are arranged in an inverted T-shaped structure; the first vertical reinforcement and the first transverse reinforcement are tied up, and the first vertical reinforcement and the second transverse reinforcement are tied up.
Preferably, the first and second composite floor slabs are symmetrically arranged in the upper part of the prefabricated wall body.
Compared with the prior art, the method has the following beneficial effects:
1) According to the construction method for the cast-in-place area steel bars of the integral assembly type shear wall structure, disclosed by the invention, the building design is precisely designed by utilizing the BIM standard model, the integral building model is modularized, and the steel bars can be directly selected, placed and welded according to the BIM model, so that complex steel bar overturning is avoided.
2) The application performs unitization operation on the whole assembled shear wall structure, is suitable for construction application of cast-in-place areas of the assembled shear wall with any structure, performs detailed model planning based on each model, and reduces design burden.
3) The cast-in-situ structural steel bars of the connecting members in the integral assembled shear wall structure can be built through the model, so that the condition that the construction is inconvenient due to collision between the reserved structural steel bars of the members and the cast-in-situ structural steel bars and the condition that the construction sequence of the cast-in-situ structural steel bars is disordered can be avoided.
4) The prefabricated part can be reliably connected with the cast-in-situ structure in the whole structure, and the normal use of the building is ensured; meanwhile, the construction flow of the steel bar node is defined, the construction period time of one standard layer of the whole assembly type shear wall structure is shortened by 25%, and the working efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a construction method of a cast-in-situ structural steel bar in a straight shape between prefabricated wallboards according to the invention;
FIG. 2 is a deepened view of the "one" type connecting bars between prefabricated wall panels according to the present invention;
FIG. 3 is a prefabricated wall panel "L" connection model of the present invention;
FIG. 4 is a deepened view of the L-shaped connecting bars of the prefabricated wall panel of the present invention;
FIG. 5 is a schematic illustration of a prefabricated wall panel "T" connection model of the present invention;
FIG. 6 is a deepened view of the "T" shaped connecting bars of the prefabricated wall panel of the present invention;
FIG. 7 is a schematic illustration of a cast-in-place structural connection model between composite floor slabs of the present invention;
fig. 8 is a deepened view of cast-in-situ structural reinforcement between composite floor slabs of the present invention;
FIG. 9 is a schematic illustration of the connection between composite floor slabs of the present invention and cast-in-place floor slabs of the same and different thicknesses;
FIG. 10 is a deepened view of the connecting steel bars of the composite floor slab and the cast-in-situ floor slab with the same plate thickness and different plate thicknesses;
FIG. 11 is a schematic illustration of the connection between a composite floor slab and a prefabricated wall body according to the present invention;
Fig. 12 is a deepened view of the connecting bars of the composite floor slab and the prefabricated wall body.
Detailed Description
In order that those skilled in the art will better understand the present application, a detailed description of embodiments of the present application will be provided below, together with accompanying drawings, wherein it is evident that the embodiments described are merely some or one embodiment, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Furthermore, the terms "mounted," "disposed," "provided," "first," "second," "third," and the like are to be construed broadly. The positional relationship is expressed by an ordinary understanding of the relative positional relationship, and is not to be construed as a definite spatial positional relationship, and the first equivalent numerical class is understood as a distinction between different kinds of understanding.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application will be described in detail with reference to fig. 1 to 12 in conjunction with examples.
The embodiment 1 discloses a cast-in-situ structural reinforcement construction method of a connecting member in an integrally assembled shear wall structure;
The method comprises the following steps:
1) Determining a construction unit, and deeply establishing a BIM integral structure model by adopting revit software to connect nodes between prefabricated components and cast-in-situ sections in the construction unit;
2) Establishing a basic model, wherein the basic model comprises at least one of the following reinforcing steel bar models: the prefabricated wall board is a straight-shaped cast-in-situ structural steel bar model, an L-shaped cast-in-situ structural steel bar model, a T-shaped cast-in-situ structural steel bar model, a steel bar model of a cast-in-situ structural floor slab between adjacent prefabricated composite floor slabs, a steel bar model between the prefabricated composite floor slab and the cast-in-situ structural floor slab, and a steel bar model between the prefabricated composite floor slab and the prefabricated wall board;
3) According to the BIM integral structure model, adopting a basic model to replace corresponding steel bar connecting parts in the BIM integral structure model one by one;
4) Processing and analyzing reinforcing steel bars of first, L and T nodes between prefabricated wall boards, processing and analyzing a post-cast concrete section for a connecting node between adjacent prefabricated composite floor boards, processing and analyzing the connection between the prefabricated composite floor boards and a cast-in-situ structural floor board, and processing and analyzing connecting reinforcing steel bars between the prefabricated composite floor boards and the prefabricated wall boards;
the processing analysis is carried out on the steel bars of the "one", "L", "T" type nodes among the prefabricated wall boards, and the processing analysis comprises the following steps:
s1, analyzing the problem of steel bar overturning from a BIM integral structure model, and simulating stirrups and vertical bars of a cast-in-place section according to the basic model; reserving reinforcing steel bars according to the basic model simulation component, and determining a connection mode of the prefabricated wallboard and the cast-in-situ section reinforcing steel bars;
s2, simulating a steel bar installation flow, and deepening a member reserved steel bar into an open steel bar based on a principle of convenient steel bar installation, so as to facilitate adjustment when the member reserved steel bar is connected with the cast-in-situ section stirrup;
S3, constructing the cast-in-situ section wall steel bars, namely reserving cast-in-situ section vertical steel bars on the floor, hoisting the prefabricated wall, penetrating stirrups on the reserved vertical steel bars, welding the vertical steel bars, adjusting the positions of the stirrups, connecting the stirrups with the reserved opening steel bars of the component, and binding the steel bars;
processing and analyzing the connection node between adjacent precast composite floor slabs for a post-cast concrete section, comprising the following steps:
s1, analyzing the problem of steel bar overturning from a BIM integral structure model, simulating reserved steel bars of a composite floor slab and cast-in-situ section plate bottom steel bars, and determining the width of a post-cast section between plates according to the construction angle of the steel bars;
s2, determining the length and the bending anchor angle of the reserved steel bars according to the stress angle of the structure, and simulating the connection mode of the steel bars;
S3, simulating a steel bar installation flow, and constructing cast-in-situ section steel bars between the composite floor slabs according to the following steps: setting up a die carrier, positioning and installing the bottom ribs of the cast-in-situ section building plate, hoisting the composite floor slab in place, binding reserved reinforcing steel bars of the cast-in-situ building plate and the composite slab, and binding the gluten of the floor slab.
The method for processing and analyzing the connection between the prefabricated composite floor slab and the cast-in-situ structural floor slab comprises the following steps:
s1, determining the thickness of a cast-in-situ floor slab, and dividing the cast-in-situ floor slab into cast-in-situ floor slabs with the same thickness and different thicknesses according to the thickness difference of the cast-in-situ floor slab to be connected; analyzing the problem of steel bar sample turning from the BIM integral structure model;
s2, when the composite slab is connected with a cast-in-situ floor slab with the same thickness, the composite slab throws away the reserved hooked steel bar with the thickness of more than or equal to 280 mm;
s3, when the composite slab is connected with cast-in-situ floor slabs with different thicknesses, the reserved straight ribs are thrown out of the composite slab, and the reinforcing steel bars in the cast-in-situ slab region are correspondingly bent;
Processing and analyzing connection reinforcing steel bars between the prefabricated composite floor slab and the prefabricated wallboard; the method comprises the following steps:
And analyzing from the BIM integral structure model, and determining whether the overlap joint length of the laminated slab and the top of the prefabricated wallboard, the length of the reserved reinforcing steel bar of the laminated slab and the anchoring form and the position of the reserved reinforcing steel bar of the laminated slab and the position of the reserved reinforcing steel bar of the prefabricated wallboard conflict.
The embodiment 2 discloses a prefabricated wallboard 'straight' -shaped cast-in-situ structure steel bar model, which comprises a cast-in-situ section 20, a first prefabricated wall body 21 and a second prefabricated wall body 22, wherein the first prefabricated wall body 21 and the second prefabricated wall body 22 are arranged in the vertical direction and are parallel in the horizontal direction, the first prefabricated wall body 21 and the second prefabricated wall body 22 are respectively provided with a reserved U-shaped steel bar 23, a hook 232 in the horizontal direction is reserved at the outer end 231 of the U-shaped steel bar, a connecting steel bar 24 is arranged at the position close to the U-shaped steel bar 23, the connecting steel bar 24 is in a rectangular structure, vertical steel bars 25 are arranged at the top points of the rectangular structure, and vertical steel bars 25 are also arranged in the hooks 232 at the outer ends of the U-shaped steel bars; the joints of the U-shaped steel bars 23, the connecting steel bars 24 and the vertical steel bars 25 are all firmly bundled.
The distance between the connecting steel bars 24 and the prefabricated wall bodies (21, 22) is 10mm, the number of the connecting steel bars 24 is set according to the height of the actual prefabricated wall bodies (21, 22),
The U-shaped steel bar hooks 232 extend out of the prefabricated wall body by 250mm;
Waterproof rain cloth 26 is further arranged between the cast-in-situ section 20 and the prefabricated wall bodies (21 and 22), and the waterproof rain cloth 26 is arranged in the outdoor direction and has a width of 150mm.
The embodiment 3 discloses a prefabricated wallboard L-shaped cast-in-situ structure steel bar model, which comprises a cast-in-situ section 30, a first prefabricated wall body 31 and a second prefabricated wall body 32, wherein the first prefabricated wall body 31 and the second prefabricated wall body 32 are vertically arranged and are horizontally arranged in parallel in an L-shaped manner, the first prefabricated wall body 31 and the second prefabricated wall body 32 are respectively provided with a reserved U-shaped steel bar 33, the outer end of the U-shaped steel bar is provided with a hook 333 in the horizontal direction, the position adjacent to the U-shaped steel bar 33 is provided with a connecting steel bar 34, the connecting steel bars 34 are in a rectangular structure, L-shaped arrangement is formed among the connecting steel bars 34, the connecting steel bars 34 are provided with square or rectangular intersection positions, the top points of the rectangular structure are respectively provided with vertical steel bars 35, and the square or rectangular intersection positions among the connecting steel bars 34 are respectively provided with vertical steel bars 35, and the U-shaped steel bar outer end hooks 333 are respectively provided with vertical steel bars 35; the joints of the U-shaped steel bars 33, the connecting steel bars 34 and the vertical steel bars 35 are all firmly bundled.
The distance between the connecting steel bars 34 and the prefabricated wall body is 10mm, the number of the connecting steel bars 34 is set according to the height of the actual prefabricated wall body, and inclined connecting steel bars 341 can be sleeved between the parallel connecting steel bars 34;
the U-shaped steel bar hooks 333 extend out of the prefabricated wall body by 250mm;
A waterproof cloth 36 is further arranged between the cast-in-situ section 30 and the prefabricated wall bodies (31, 32), and the waterproof cloth 36 is arranged in the outdoor direction and has a width of 150mm.
Embodiment 4 discloses a prefabricated wallboard 'T' -shaped cast-in-place structure reinforcing bar model, which comprises a cast-in-place section 40, a first prefabricated wall 41, a second prefabricated wall 42 and a third prefabricated wall 43, wherein the first prefabricated wall 41, the second prefabricated wall 42 and the third prefabricated wall 43 are vertically arranged, the first prefabricated wall 41 and the second prefabricated wall 42 form a T-shaped transverse arrangement, the third prefabricated wall 43 and the first prefabricated wall 41 and the second prefabricated wall 42 form a T-shaped arrangement, the first prefabricated wall 41, the second prefabricated wall 42 and the third prefabricated wall 43 are respectively provided with a left U-shaped reinforcing bar 44, the outer ends of the U-shaped reinforcing bars are respectively provided with a hook 444 in the horizontal direction, connecting reinforcing bars 45 are arranged close to the U-shaped reinforcing bars 44, the connecting reinforcing bars 45 are in a rectangular structure, the T-shaped transverse connecting reinforcing bars 451 and the T-shaped vertical connecting bars 452 are respectively provided with square or rectangular positions, the vertexes of the rectangular structure are respectively provided with vertical reinforcing bars 46, the square or rectangular positions of the connecting bars 45 are respectively provided with vertical reinforcing bars 46, and the inner and outer ends of the U-shaped reinforcing bars 44 are respectively provided with vertical hooks 444; the joints of the U-shaped reinforcing steel bars 44, the connecting reinforcing steel bars 45 and the vertical reinforcing steel bars 46 are all firmly bundled.
The distance between the connecting steel bars 45 and the prefabricated wall body (41/42/43) is 5-20mm, the number of the connecting steel bars 45 is set according to the height of the actual prefabricated wall body, in some cases, in order to enhance the strength of the connecting steel bars 45 and enhance the strength of the cast-in-situ section wall body 40, the connecting steel bars 45 can also comprise inclined connecting steel bars besides the parallel connecting steel bars 45;
the U-shaped steel bar hooks extend out of the prefabricated wall body by 240-260mm;
a waterproof cloth 36 is further arranged between the cast-in-situ section 40 and the prefabricated wall bodies (41, 42), and the waterproof cloth 36 is arranged in the outdoor direction and has a width of 150mm.
Embodiment 5 discloses a cast-in-place structure model between adjacent prefabricated composite floor slabs, which comprises a cast-in-place section 50, a first composite floor slab 51 and a second composite floor slab 52, wherein the first composite floor slab 51 and the second composite floor slab 52 are all arranged in the same plane, the cast-in-place section 50 is arranged between the first composite floor slab 51 and the second composite floor slab 52, a left transverse hook steel bar 53 is arranged in each of the first composite floor slab 51 and the second composite floor slab 52, the transverse hook steel bar 53 extends out of the composite floor slab to the cast-in-place section, a plate bottom longitudinal rib 54 is also arranged in the plane of the transverse hook steel bar 53 perpendicular to the transverse hook steel bar, the plate bottom longitudinal rib 54 and the transverse hook steel bar 53 are bundled, plate reinforcing ribs 55 are also arranged at the upper parts of the first and the second composite floor slabs (51 and 52), the plate reinforcing ribs 55 comprise transverse plate reinforcing ribs 551 and longitudinal plate reinforcing ribs 552, and the plate reinforcing ribs 55 are arranged at the upper parts of the transverse hook steel bar 53 and the plate bottom longitudinal rib 54;
in the cast-in-situ structure model between the composite floor slabs, the width of a cast-in-situ section 50 arranged between a first composite floor slab 51 and a second composite floor slab 52 is 200-400mm, one end of a transverse hook steel bar 53 reserved in the composite floor slabs (51 and 52) is positioned in the composite floor slab, and the distance between the other end of the transverse hook steel bar and the other composite floor slab is 10-20mm.
The joints of the transverse hook steel bars 53, the transverse plate steel bars 551, the longitudinal plate steel bars 552 and the plate bottom longitudinal bars 54 are all tied and fastened.
The embodiment 6 discloses a connection model between a prefabricated composite floor slab and a cast-in-situ floor slab, which has equal thickness, and comprises a first composite floor slab and a cast-in-situ slab adjacent to the first composite floor slab, wherein an indwelling transverse hook steel bar is arranged in the first composite floor slab and protrudes out of the first composite floor slab for a certain distance, a first slab reinforcement is also arranged at the upper part of the first composite floor slab, the first slab reinforcement extends into the cast-in-situ slab, a second slab reinforcement connected with the transverse hook steel bar of the first composite floor slab is also arranged in the cast-in-situ slab, and longitudinal slab reinforcements are arranged in the transverse hook steel bar, the first slab reinforcement and the second slab reinforcement;
the length of the transverse hook steel bars arranged in the first composite floor slab is preferably more than or equal to 260mm.
The transverse hook reinforcing steel bars, the first plate reinforcing steel bars, the second plate reinforcing steel bars and the longitudinal plate reinforcing steel bars are all tied and fastened at the joint.
Embodiment 7 discloses a connection model between a prefabricated composite floor slab and a cast-in-situ floor slab with unequal thickness, which comprises a first composite floor slab and a cast-in-situ slab adjacent to the first composite floor slab with unequal thickness, wherein the first composite floor slab is internally provided with left-behind transverse reinforcing bars, a first transverse reinforcing bar, a second transverse reinforcing bar and a third transverse reinforcing bar; the first transverse reinforcement extends from the cast-in-situ section to the edge of the first laminated floor slab adjacent to the cast-in-situ section, is bent for the first time in the vertical upward direction at the edge, is bent for the second time in the horizontal direction in a third transverse reinforcement plane, and extends for a distance in parallel along the upper side of the first laminated floor slab after bending;
The second transverse reinforcement is arranged close to the upper surface of the first composite floor slab, the second transverse reinforcement is parallel to the first transverse reinforcement, a third transverse reinforcement is arranged at the upper part of the first composite floor slab, extends to the cast-in-place section along the first composite floor slab at the upper part of the first composite floor slab, is vertically bent downwards for the first time at a position h away from the edge of the first composite floor slab, is bent for the second time in the horizontal direction when reaching the coplanar surface of the first transverse reinforcement and the transverse reinforcement, and is coplanar with the first transverse reinforcement after bending; and h is the thickness of the first composite floor slab.
The bending parts of the first transverse reinforcing bars and the third transverse reinforcing bars are respectively provided with a matched longitudinal reinforcing bar, and the longitudinal reinforcing bars can be reasonably arranged along the transverse reinforcing bars according to specific requirements.
Embodiment 8 discloses a connection model between composite floor slab and prefabricated wall body, including first composite floor slab and second composite floor slab and be used for supporting composite floor slab's prefabricated wall body and cast-in-place section, first composite floor slab and second composite floor slab include from inside to each other extend first horizontal arrangement of reinforcement and first horizontal arrangement of reinforcement between the clearance, and parallel to first horizontal arrangement of reinforcement locate at first and second composite floor slab upper portion second horizontal arrangement of reinforcement, prefabricated wall body is inside to be provided with from inside first vertical arrangement of reinforcement that extends, first vertical arrangement of reinforcement and first horizontal arrangement of reinforcement are in the form of inverted T; the first vertical reinforcement and the first transverse reinforcement are tied up, and the first vertical reinforcement and the second transverse reinforcement are tied up.
The first composite floor slab and the second composite floor slab are symmetrically arranged on the upper portion of the prefabricated wall body, and the first composite floor slab and the second composite floor slab are protruded into the prefabricated wall body by equal distances.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. A cast-in-situ structural reinforcement construction method of a connecting member in an integrally assembled shear wall structure comprises the following steps of; the method comprises the following steps:
1) Determining a construction unit, and deeply establishing a BIM integral structure model by adopting revit software to connect nodes between prefabricated components and cast-in-situ sections in the construction unit;
2) Establishing a basic model, wherein the basic model comprises at least one of the following reinforcing steel bar models: the prefabricated wall board is a straight-shaped cast-in-situ structural steel bar model, an L-shaped cast-in-situ structural steel bar model, a T-shaped cast-in-situ structural steel bar model, a steel bar model of a cast-in-situ structural floor slab between adjacent prefabricated composite floor slabs, a steel bar model between the prefabricated composite floor slab and the cast-in-situ structural floor slab, and a steel bar model between the prefabricated composite floor slab and the prefabricated wall board;
3) Simulating a corresponding connection part in the BIM integral structure model by adopting a basic model according to the BIM integral structure model;
4) Performing attribute analysis on the simulated basic model;
5) Obtaining simulated construction data, and constructing according to the construction data;
The at least one reinforcing bar model is set as follows:
The first prefabricated wall body and the second prefabricated wall body are arranged in the vertical direction and are parallel in the horizontal direction to form a straight line-shaped steel bar model of the straight line-shaped cast-in-situ structure, reserved U-shaped steel bars are arranged at the first prefabricated wall body and the second prefabricated wall body, hooks in the horizontal direction are arranged at the outer ends of the U-shaped steel bars, connecting steel bars are arranged at the positions close to the U-shaped steel bars, the connecting steel bars are of rectangular structures, vertical steel bars are arranged at the top points of the rectangular structures, and vertical steel bars are also arranged in the hooks at the outer ends of the U-shaped steel bars; the U-shaped steel bars, the connecting steel bars and the vertical steel bars are firmly tied up at the connecting positions;
The L-shaped cast-in-situ structure steel bar model comprises a first prefabricated wall body and a second prefabricated wall body, wherein the first prefabricated wall body and the second prefabricated wall body are arranged in the vertical direction and are parallel in the horizontal direction to form an L-shaped structure, reserved U-shaped steel bars are reserved in the first prefabricated wall body and the second prefabricated wall body, hooks in the horizontal direction are arranged at the outer ends of the U-shaped steel bars, connecting steel bars are arranged at the positions close to the U-shaped steel bars, the connecting steel bars are in L-shaped arrangement in a rectangular structure, the connecting steel bars are provided with square or rectangular intersection positions, vertical steel bars are arranged at the top points of the rectangular structure, vertical steel bars are arranged at the square or rectangular intersection positions of the connecting steel bars, and the vertical steel bars are also arranged in the hooks at the outer ends of the U-shaped steel bars; the U-shaped steel bars, the connecting steel bars and the vertical steel bars are firmly tied up at the connecting positions;
The T-shaped cast-in-situ structure steel bar model comprises a first prefabricated wall body, a second prefabricated wall body and a third prefabricated wall body, wherein the first prefabricated wall body, the second prefabricated wall body and the third prefabricated wall body are arranged in the vertical direction, the first prefabricated wall body and the second prefabricated wall body form T-shaped transverse arrangement, the third prefabricated wall body and the transverse arrangement form T-shaped arrangement, the first prefabricated wall body, the second prefabricated wall body and the third prefabricated wall body are provided with reserved U-shaped steel bars, the outer ends of the U-shaped steel bars are provided with hooks in the horizontal direction, the positions close to the U-shaped steel bars are provided with connecting steel bars, the connecting steel bars are in T-shaped arrangement, the T-shaped transverse connecting steel bars and the T-shaped vertical connecting steel bars are provided with square or rectangular intersection positions, the vertexes of the rectangular structures are provided with vertical steel bars, and the square or rectangular intersection positions of the connecting steel bars are provided with vertical steel bars; the U-shaped steel bars, the connecting steel bars and the vertical steel bars are firmly tied up at the connecting positions;
The cast-in-place structure model between the adjacent prefabricated composite floor slabs comprises a first composite floor slab and a second composite floor slab, wherein the first composite floor slab and the second composite floor slab are arranged in the same plane, a cast-in-place section is arranged between the first composite floor slab and the second composite floor slab, left transverse hook reinforcements are arranged in the first composite floor slab and the second composite floor slab, the transverse hook reinforcements extend out of the composite floor slabs to the cast-in-place section, plate bottom longitudinal reinforcements are further arranged in the planes of the hook reinforcements and perpendicular to the transverse hook reinforcements, plate bottom longitudinal reinforcements and transverse hook reinforcements are bundled, plate reinforcement bars are further arranged at the upper parts of the first composite floor slab and the second composite floor slab, the plate reinforcement bars comprise transverse plate reinforcement bars and longitudinal plate reinforcement bars, and the plate reinforcement bars are positioned at the upper parts of the transverse hook reinforcements and the plate bottom longitudinal reinforcements;
The connecting model between the prefabricated composite floor slab and the cast-in-situ floor slab with equal thickness comprises a first composite floor slab and a cast-in-situ slab adjacent to the first composite floor slab, wherein an indwelling transverse hook steel bar is arranged in the first composite floor slab and protrudes out of one end of the interior of the first composite floor slab by a distance, a slab reinforcing bar is also arranged on the upper part of the first composite floor slab and extends into the cast-in-situ slab, a lower slab reinforcing bar connected with the transverse hook steel bar of the first composite floor slab is also arranged in the cast-in-situ slab, and longitudinal slab reinforcing bars are arranged on the transverse hook steel bar and the slab reinforcing bar;
The connecting model between the prefabricated composite floor slab and the cast-in-situ floor slab with different thicknesses comprises a first composite floor slab and cast-in-situ slabs adjacent to the first composite floor slab with different thicknesses, wherein the first composite floor slab is internally provided with left-behind transverse reinforcing steel bars, first transverse reinforcing steel bars, second transverse reinforcing steel bars and third transverse reinforcing steel bars; the first transverse reinforcement extends from the cast-in-situ section to the edge of the first composite floor slab, which is close to the cast-in-situ section, and is bent for the first time in the vertical upward direction, a group of transverse reinforcement is bent for the second time in the horizontal direction in a third transverse reinforcement plane, and the bent first transverse reinforcement extends to a distance in parallel along the upper part of the first composite floor slab; the second transverse reinforcement is arranged close to the upper surface of the first composite floor slab, the second transverse reinforcement is parallel to the first transverse reinforcement, a third transverse reinforcement is arranged at the upper part of the first composite floor slab, extends to the cast-in-place section along the first composite floor slab at the upper part of the first composite floor slab, is vertically bent downwards at a position h away from the edge of the first composite floor slab, is bent for the second time in the horizontal direction when reaching the transverse reinforcement plane, and is coplanar with the transverse reinforcement after bending; h is the total thickness of the floor slab comprising the composite floor slab;
The connecting model between the composite floor slab and the prefabricated wall body comprises a first composite floor slab, a second composite floor slab and the prefabricated wall body for supporting the composite floor slab, wherein the first composite floor slab and the second composite floor slab comprise first transverse reinforcing bars extending from the inside and second transverse reinforcing bars parallel to the first transverse reinforcing bars and positioned at the upper parts of the first composite floor slab and the second composite floor slab, the inside of the prefabricated wall body is provided with first vertical reinforcing bars extending from the inside, and the first vertical reinforcing bars and the first transverse reinforcing bars are arranged in an inverted T-shaped structure; the first vertical reinforcement and the first transverse reinforcement are tied up, and the first vertical reinforcement and the second transverse reinforcement are tied up.
2. The method for constructing the cast-in-situ structural steel bars of the connecting members in the integrally assembled shear wall structure according to claim 1, wherein the method for processing and analyzing the simulated steel bar models of the nodes of one "," L "and" T "comprises the following steps:
S1, analyzing the problem of steel bar overturning from a BIM integral structure model, and simulating stirrups and vertical bars of a cast-in-situ section; the simulation component reserves the steel bar, and determines the connection mode of the prefabricated wallboard and the cast-in-situ section steel bar;
s2, simulating a steel bar installation flow, and deepening a member reserved steel bar into an open steel bar based on a principle of convenient steel bar installation, so as to facilitate adjustment when the member reserved steel bar is connected with the cast-in-situ section stirrup;
S3, constructing the cast-in-situ section wall steel bars according to the following steps of reserving cast-in-situ section vertical steel bars on the floor slab, hoisting the prefabricated wall body, penetrating stirrups on the reserved vertical steel bars, welding the vertical steel bars, adjusting the positions of the stirrups, connecting the stirrups with the reserved opening steel bars of the component, and binding the steel bars.
3. The method for constructing the cast-in-situ structural reinforcement of the connecting member in the integrally assembled shear wall structure of claim 1,
Processing and analyzing the connection node between the simulated adjacent precast composite floor slabs for a post-cast concrete section, wherein the processing and analyzing comprises the following steps of:
s1, analyzing the problem of steel bar overturning from a BIM integral structure model, simulating reserved steel bars of a composite floor slab and cast-in-situ section plate bottom steel bars, and determining the width of a post-cast section between plates according to the construction angle of the steel bars;
s2, determining the length and the bending anchor angle of the reserved steel bars according to the stress angle of the structure, and simulating the connection mode of the steel bars;
S3, simulating a steel bar installation flow, and constructing cast-in-situ section steel bars between the composite floor slabs according to the following steps: setting up a die carrier, positioning and installing the bottom ribs of the cast-in-situ section building plate, hoisting the composite floor slab in place, binding reserved reinforcing steel bars of the cast-in-situ building plate and the composite slab, and binding the gluten of the floor slab.
4. The method for constructing the cast-in-situ structural reinforcement of the connecting member in the integrally assembled shear wall structure of claim 1,
The method for processing and analyzing the connecting steel bar model between the prefabricated composite floor slab and the cast-in-situ structural floor slab comprises the following steps:
s1, determining the thickness of a cast-in-situ floor slab, and dividing the cast-in-situ floor slab into cast-in-situ floor slabs with the same thickness and different thicknesses according to the thickness difference of the cast-in-situ floor slab to be connected; analyzing the problem of steel bar sample turning from the BIM integral structure model;
s2, when the composite slab is connected with a cast-in-situ floor slab with the same thickness, the composite slab throws away the reserved hooked steel bar with the thickness of more than or equal to 280 mm;
s3, when the composite slab is connected with cast-in-situ floor slabs with different thicknesses, the reserved straight ribs are thrown out of the composite slab, and the reinforcing steel bars in the cast-in-situ slab region are correspondingly bent;
The construction is carried out according to the following construction sequence: setting up a die carrier, positioning and installing the bottom ribs of the cast-in-situ section building plate, hoisting the composite floor slab in place, binding reserved reinforcing steel bars of the cast-in-situ building plate and the composite slab, and binding the gluten of the floor slab.
5. The method for constructing the cast-in-situ structural reinforcement of the connecting member in the integrally assembled shear wall structure of claim 1,
Analyzing connection reinforcing steel bars between the prefabricated composite floor slab and the prefabricated wallboard through a BIM model, and determining whether overlap joint length of the composite slab and the top of the prefabricated wallboard, length of reserved reinforcing steel bars of the composite slab, anchoring form and position conflict of the reserved reinforcing steel bars of the composite slab and the reserved reinforcing steel bars of the prefabricated wallboard;
The construction is carried out according to the following construction sequence: setting up a die frame, hoisting the composite floor slab in place, binding prefabricated wallboard reinforcing steel bars and reserved reinforcing steel bars of the composite slab, and binding floor slab gluten.
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| CN109811931A (en) * | 2019-01-03 | 2019-05-28 | 华北水利水电大学 | A kind of fabricated shear wall building structure and its construction method based on BIM |
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