CN111255066A - Dry-wet combined connecting structure for beam column of prefabricated concrete structure and implementation method - Google Patents
Dry-wet combined connecting structure for beam column of prefabricated concrete structure and implementation method Download PDFInfo
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- CN111255066A CN111255066A CN202010224548.XA CN202010224548A CN111255066A CN 111255066 A CN111255066 A CN 111255066A CN 202010224548 A CN202010224548 A CN 202010224548A CN 111255066 A CN111255066 A CN 111255066A
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
- E04B2001/2478—Profile filled with concrete
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Abstract
The invention discloses a dry-wet combined connecting structure of a beam column of an assembled concrete structure and an implementation method, and belongs to the technical field of assembled buildings. A cylinder cavity structure is arranged at the intersection of the transverse beam and the longitudinal beam; the cylinder cavity structure comprises an outer cylinder and an inner cylinder; a square annular cavity is defined by the outer cylinder and the inner cylinder, and column corner longitudinal steel bars I and column corner longitudinal steel bars II are arranged at four corners of the square annular cavity; transverse beam longitudinal steel bars and longitudinal beam longitudinal steel bars in the transverse beam and the longitudinal beam sequentially penetrate through the outer cylinder and the inner cylinder, and the inner ends of the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars are connected with anchoring heads. According to the invention, a modularized beam-column joint core area connecting structure is formed by the structural mode of the inner cylinder and the outer cylinder, the difficult problems of multi-directional steel bar anchoring connection of a beam body, complex intersection anchoring connection and installation of column longitudinal steel bars and stirrup penetration are solved, the process links and construction cost of a template and support are saved, and the beam-column joint connecting structure has the advantages and characteristics of modularization, integration and informatization.
Description
Technical Field
The invention relates to the technical field of prefabricated buildings, in particular to a beam-column dry-wet combined connecting structure of a prefabricated concrete structure and an implementation method.
Background
The prefabricated building is an industrial building which is formed by assembling building structural components, building components, parts, electromechanical equipment and the like in a reliable connection mode and comprises a prefabricated concrete structure, a steel structure, a wood structure, a mixed structure and the like. The fabricated concrete building is one of the main forms of the fabricated building in China at present, is an important component of novel industrialization, and is an important way for realizing the modernization of the building industry. The assembly type building is adopted, so that the quality, the efficiency and the benefit of the building engineering are improved, the labor environment is improved, and the labor force is saved; is beneficial to promoting the energy conservation and emission reduction of buildings and saving resources.
Compared with the cast-in-place concrete building, the main components of the fabricated concrete structure are prefabricated in a factory or on site, and are hoisted mechanically, so that the fabricated concrete building has the characteristics of high construction speed, effectively reduced cost and effectively shortened engineering construction period. With the shortage of labor force, the great increase of labor cost and the great increase of the occupation ratio of human resource cost, the implementation of the national development strategy of novel industrialization, informatization and urbanization and the unprecedented opportunity and challenge of the development of the fabricated building are met.
The prefabricated concrete structure comprises a prefabricated integral concrete structure and a fully-assembled concrete structure, and at present, most of the multi-layer and all high-rise prefabricated concrete structures in China adopt the prefabricated integral concrete structure. The connection of the integral concrete structure is mainly in a wet connection mode, so that the overall performance of the integral concrete structure is ensured, and the structural performance of the integral concrete structure is basically equal to that of cast-in-place concrete. The prefabricated concrete structure mainly comprises a prefabricated integral concrete structure which is mainly wet-connected and is mainly emphasized in currently published technical specifications for prefabricated concrete structures JGJ1-2014, GB/T51231-2016 for prefabricated concrete buildings and prefabricated concrete connecting node structures 15G310-12, and the fully-prefabricated concrete structure does not meet the prefabricated integral concrete structure required by the prefabricated integral structure, so that domestic engineering projects are rarely adopted, and no specifications and technical standards can be recycled.
The wet connection process adopts the principle of equal cast-in-place, is a main connection node mode of a domestic fabricated concrete structure, and has the advantages of equal cast-in-place, good integrity and shock resistance, but has the defects of complex node structure, steel bar conflict, steel bar anchoring and obvious contradiction in connection process, and the technical problems of key process links such as templates, steel bars, concrete, grouting, hoisting, supports, maintenance and the like need to be solved, which are unfavorable for the industrialized, modernized and informatization development of fabricated buildings, so that the technical problems in connection node structure, process, construction method and the like of fabricated concrete frame structures and shear wall structures are urgently needed to be solved, and the healthy and ordered development of fabricated concrete structures is promoted.
In conclusion, the connection structure of the beam-column joint in the assembly type concrete frame structure adopts wet connection, and the intersection problem of longitudinal steel bars in multiple directions in vertical column bodies, stirrups and beam bodies and the like in the core area of the joint exists in the core area of the beam-column joint. The main construction inconveniences and difficulties that exist include:
firstly, the steel bars are in position conflict, the number of the steel bars is large, the positions are dense, the length of the steel bars anchored in a node area is large or the steel bars are anchored in a bent mode, and particularly the problems that longitudinal steel bars in four directions in a longitudinal and transverse beam body are difficult to avoid in the prefabrication and installation of the longitudinal steel bars in the core area of the node and the like exist;
secondly, the hoisting and installation are inconvenient in the construction, and the hoisting is difficult to be in place due to the position and installation of the steel bars;
thirdly, the shape of the node area is complex, the longitudinal steel bars of the column, the stirrups, the longitudinal and transverse steel bars of the beam body are crossed, and the problems of inconvenience in erecting a formwork, pouring concrete, supports and a frame body and the like exist in wet operation construction. The wet operation construction has the problems, which is not beneficial to the development and the promotion of the industrialization, the informatization and the modularization construction of the fabricated concrete structure.
Disclosure of Invention
The invention provides a beam-column wet-dry combined connecting structure of an assembly type concrete structure and an implementation method thereof, aiming at solving the difficult problems and the defects of the construction of the assembly type concrete structure nodes and promoting the development of industrialization, modularization, integration and informatization of an assembly type building.
The invention is realized by the following technical scheme: a dry-wet combined connecting structure of a beam column of an assembled concrete structure comprises a transverse beam and a longitudinal beam, wherein a cylindrical cavity structure is arranged at the intersection of the transverse beam and the longitudinal beam; the cylinder cavity structure comprises an outer cylinder and an inner cylinder; the outer cylinder and the inner cylinder form a square annular cavity, and four corners of the square annular cavity are provided with column corner longitudinal steel bars I and column corner longitudinal steel bars II; and the inner ends of the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars are connected with anchoring heads.
Preferably: the outer cylinder comprises an L-shaped outer cylinder plate I and an L-shaped outer cylinder plate II, and the outer cylinder plate I and the outer cylinder plate II are spliced into a rectangle; the cross sections of the transverse beam and the longitudinal beam are provided with U-shaped grooves; the number of the U-shaped grooves on each side is consistent with that of the corresponding longitudinal reinforcements of the transverse beam and the longitudinal reinforcements of the longitudinal beam, the width of each U-shaped groove is 10mm larger than that of the corresponding longitudinal reinforcements of the transverse beam and the longitudinal reinforcements of the longitudinal beam, and the depth of each U-shaped groove is not less than the thickness of the protective layer plus 30 mm; and the transverse beam longitudinal reinforcing steel bars and the longitudinal beam longitudinal reinforcing steel bars penetrate through the corresponding U-shaped grooves.
Preferably: the minimum thickness of the outer cylinder plate I and the outer cylinder plate II is not less than 5mm, and the outer cylinder plate I and the outer cylinder plate II are manufactured by Q235 steel processing or high-performance UHPC concrete molding pouring.
Preferably: the inner cylinder comprises two inner transverse sub-plates and two inner longitudinal sub-plates which are similar in structure, and the two inner transverse sub-plates and the two inner longitudinal sub-plates are intersected to form a 'well' -shaped structure;
the inner transverse daughterboard comprises a web; the two sides of the upper edge of the web plate are connected with upper flange plates, and the two sides of the lower edge of the web plate are connected with lower flange plates; concave-convex grating plates are arranged at the upper and lower edges of the web plate; the concave-convex grid plate is opposite to the corresponding transverse beam longitudinal steel bar and the longitudinal beam longitudinal steel bar, and the transverse beam longitudinal steel bar and the longitudinal beam longitudinal steel bar penetrate through the corresponding grooves in the concave-convex grid plate.
Preferably: the two ends of the concave-convex grating plate are provided with connecting pin keys; the two ends of the inner transverse daughter board are correspondingly connected with an inner transverse buckle plate and an inner longitudinal buckle plate through pin connecting keys.
Preferably: a connecting piece for connecting the outer cylinder and the inner cylinder is arranged in the square annular cavity, and the connecting piece is an HPB300 steel bar with the diameter not less than 20 mm; two ends of the connecting piece are connected with the outer cylinder and the inner cylinder in a welding or mechanical connection mode; the vertical installation interval of the connecting pieces is not less than 300 mm.
Preferably: the transverse beam longitudinal reinforcing steel bars and the longitudinal beam longitudinal reinforcing steel bars adopt large-diameter reinforcing steel bars, the clear distance of the reinforcing steel bars is not less than 30mm, and the diameter of the reinforcing steel bars is larger; the length of the steel bar in the beam body is L1+ L2+ L3 + construction allowable deviation of the outside section size of the outer cylinder and the inner cylinder, the length of the steel bar in the beam body is not less than 15d, and d is the diameter of the steel bar.
Preferably: the column corner longitudinal steel bars I and the column corner longitudinal steel bars II are arranged in a centralized manner at four corners of the square annular cavity; column corner portion longitudinal reinforcement I, column corner portion longitudinal reinforcement II adopt the major diameter reinforcing bar, and column corner portion longitudinal reinforcement I, column corner portion longitudinal reinforcement II length satisfy node core area cross-section height H1+ anchor connection length H2, and the reinforcing bar of square annular cavity angular region configuration is no less than 50% of cross-section arrangement of reinforcement volume and is no less than 4.
An implementation method of a dry-wet combined connecting structure of a beam column of an assembled concrete structure,
step 1: splitting a prefabricated component of a concrete frame structure;
according to a design drawing, a BIM information model of REVIT or PLANBAR is utilized to split the concrete frame structure into components which can be manufactured and constructed and are a transverse beam body, a longitudinal beam body, an upper main body, a lower main body and a core node area;
step 2: deepening design of the member and the beam column core node;
dividing the structure column into side column nodes, middle column nodes and corner column nodes according to the combination form of the structure column and the structure beam, and then combining the relevant information of the column, the beam and the nodes to further optimize and integrate; optimizing, integrating, merging and merging node types;
and step 3: processing and manufacturing a cylinder cavity structural body;
combining the optimized node and the connection structure type, manufacturing a processing scheme, controlling the processing precision, rechecking the quality of a processed part, and then carrying out assembly verification, wherein the deviation of the processed internal and external dimensions is controlled within 1-2 mm;
the inspection contents comprise size deviation, section position, U-shaped groove, concave-convex grating plate, corner area, connecting piece position, material strength and thickness of the inner cylinder and the outer cylinder;
processing the manufactured cylinder cavity structure, sorting and stacking, and numbering the planting cores for use;
and 4, step 4: constructing a dry-wet combined connecting joint;
the process is as follows:
construction preparation → column installation → installation of a cylindrical cavity structure → installation of a position, elevation and section information inspection → installation of a beam support structure → installation of a transverse beam body → insertion of a transverse beam body reinforcing steel bar into the cylindrical cavity structure → installation of a longitudinal beam body → insertion of a longitudinal beam body reinforcing steel bar into the cylindrical cavity structure → inspection of beam body installation quality → installation of an inner transverse buckle plate, an inner longitudinal buckle plate → concealed acceptance → grouting and pouring.
Compared with the prior art, the invention has the beneficial effects that: the framework structure of the beam-column node core area is formed by the structural mode of the inner cylinder and the outer cylinder, the beam body steel bars are accurately and consistently reserved, the connection structural mode of mechanical and extrusion anchoring is adopted, and the modularized beam-column node core area connection structural structure is formed,
the beneficial effects of the method include:
(1) the dual hoop effect of the inner cylinder and the outer cylinder, the mechanical anchoring effect of the anchoring end head and the inner support effect of the primary and secondary connecting piece are formed in the core area of the beam-column node;
(2) the effect of the coupling effect is superposed, the strength of concrete in the node core area is improved, the bonding effect of reinforced concrete is enhanced, the anchoring length of a reinforcing steel bar in the node core area can be effectively reduced, the complex method of bending and anchoring due to insufficient anchoring length is avoided, and the node assembly construction efficiency is improved;
(3) the method solves the inconvenience and difficult problems in the aspects of anchoring connection of multi-directional reinforcements of the beam body, passing through of longitudinal reinforcements and stirrups of the column body and installation, saves the process links and construction cost of a template and support, and forms a modularized, integrated and informationized dry-wet combined connecting structure of the beam column of the prefabricated concrete structure.
Drawings
Fig. 1 is a plan view of a dry-wet combination beam-column connection structure of a prefabricated concrete structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an inner transverse daughter board assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of an inside gusset of an embodiment of the present invention;
in the figure, 1-outer cylinder, 2-inner transverse daughter board, 3-inner longitudinal daughter board, 4-inner transverse buckle board, 5-inner longitudinal buckle board, 6-primary-secondary connecting piece, 7-transverse beam, 8-longitudinal beam, 9-transverse beam longitudinal steel bar, 10-longitudinal beam longitudinal steel bar, 11-column corner longitudinal steel bar I, 12-column corner longitudinal steel bar II, 13-anchoring head; 1-1 outer cylinder plate I and 1-2 outer cylinder plate II; 2-1 web plate, 2-2 upper flange plate, 2-3 lower flange plate, 2-4 concave-convex grid plate and 2-5 connecting pin key; a reset cover plate at the upper part of the 4-1 buckle plate and a reset cover plate at the lower part of the 4-1 buckle plate.
Detailed Description
The following are specific embodiments of the present invention, and the present invention will be further described with reference to the accompanying drawings.
Example one
Taking an assembly type concrete frame structure as an example, the beam adopts an assembly type superposed beam, the maximum size of the cross section of the beam is 300 multiplied by 900, the column adopts a prefabricated column, the size of the cross section of the column is 600 plus 800mm, the longitudinal stress steel bar of the beam column adopts HRB400, the diameter is 22 to 28, and the beam column joint adopts the dry-wet combined connecting structure of the beam column of the assembly type concrete structure.
As shown in fig. 1-3, in the beam-column wet-dry combination connection structure of the prefabricated concrete structure, the intersection of the transverse beam 7 and the longitudinal beam 8 is a node core area, and the node core area comprises a cylinder cavity structure. The barrel cavity structure comprises an outer barrel 1 and an inner barrel, the outer barrel 1 and the inner barrel are enclosed to form a square ring-shaped cavity, four corners of the square ring-shaped cavity are provided with a column corner longitudinal steel bar I11 and a column corner longitudinal steel bar II 12, transverse beam longitudinal steel bars 9 and longitudinal beam longitudinal steel bars 10 in a transverse beam 7 and a longitudinal beam 8 sequentially penetrate through the outer barrel 1 and the inner barrel, and the inner ends of the transverse beam longitudinal steel bars 9 and the longitudinal beam longitudinal steel bars 10 are connected with anchoring heads 13.
Further: the outer cylinder 1 comprises an L-shaped outer cylinder plate I1-1 and an outer cylinder plate II 1-2, and the outer cylinder plate I1-1 and the outer cylinder plate II 1-2 are spliced into a rectangle. U-shaped grooves are formed in the cross sections of the transverse beam 7 and the longitudinal beam 8 corresponding to the outer cylinder plate I1-1 and the outer cylinder plate II 1-2; the number of the U-shaped grooves on each side is consistent with that of the corresponding transverse beam longitudinal reinforcements 9 and longitudinal beam longitudinal reinforcements 10, the width of each U-shaped groove is 10mm larger than the diameter of the corresponding transverse beam longitudinal reinforcements 9 and longitudinal beam longitudinal reinforcements 10, the depth of each U-shaped groove is not less than the thickness of a protective layer plus 30mm, the protective layer is the thickness of the protective layer of the reinforcements in the reinforced concrete, and the protective layer is selected according to the environment type and design; and the transverse beam longitudinal steel bars 9 and the longitudinal beam longitudinal steel bars 10 penetrate through the corresponding U-shaped grooves.
The minimum thickness of the outer cylinder plate I1-1 and the outer cylinder plate II 1-2 is not less than 5mm, and the outer cylinder plate I1-1 and the outer cylinder plate II 1-2 are manufactured by Q235 steel processing or UHPC concrete molding pouring with high performance.
Further: as shown in fig. 2, the inner cylinder comprises two inner transverse sub-plates 2 and two inner longitudinal sub-plates 3 which are similar in structure, and the two inner transverse sub-plates 2 and the two inner longitudinal sub-plates 3 are intersected to form a shape like a Chinese character 'jing';
taking the inner transverse daughter board 2 as an example:
the inner transverse daughter board 2 comprises a web 2-1; the upper two sides of the web plate 2-1 are connected with upper flange plates 2-2, and the lower two sides of the web plate 2-1 are connected with lower flange plates 2-3; the upper and lower edges of the web plate 2-1 are concave-convex grating plates 2-4. The concave-convex grid plates 2-4 are opposite to the corresponding transverse beam longitudinal reinforcements 9 and longitudinal beam longitudinal reinforcements 10, and the transverse beam longitudinal reinforcements 9 and the longitudinal beam longitudinal reinforcements 10 penetrate through the corresponding grooves in the concave-convex grid plates 2-4.
The two ends of the concave-convex grating plates 2-4 are provided with connecting pin keys 2-5; the two ends of the inner transverse sub-plate 2 are correspondingly connected with an inner transverse buckle plate 4 and an inner longitudinal buckle plate 5 through pin connecting keys 2-5. Longitudinal steel bars in the beam body are placed in the grooves and the U-shaped grooves of the concave-convex grating plates and then are covered and sealed through the inner transverse buckle plates 4 and the inner longitudinal buckle plates 5.
Further: a connecting piece 6 for connecting the outer cylinder 1 and the inner cylinder is arranged in the square annular cavity, and the connecting piece 6 is an HPB300 steel bar with the diameter not less than 20 mm; two ends of the connecting piece 6 are connected with the outer cylinder 1 and the inner cylinder in a welding or mechanical connection mode, so that the inner cylinder and the outer cylinder are connected in a reinforced mode, and the position and deviation of the connecting piece accord with design requirements. The vertical installation spacing of the connecting pieces 6 is not less than 300 mm.
Further: the transverse beam longitudinal reinforcing steel bars 9 and the longitudinal beam longitudinal reinforcing steel bars 10 adopt large-diameter reinforcing steel bars, and the clear distance of the reinforcing steel bars is not less than 30mm and the larger value of the diameter of the reinforcing steel bars; the length of the steel bar in the beam body is L1+ L2+ L3 + construction allowable deviation of the outside section size of the outer cylinder 1 and the inner cylinder + the length of the anchor head 13, the length of the steel bar in the beam body is not less than 15d, and d is the diameter of the steel bar.
Further: the column corner longitudinal steel bars I11 and the column corner longitudinal steel bars II 12 are arranged in four column steel bar concentrated connection areas formed by the inner cylinder, the outer cylinder and the connectors on the periphery of the node core area. Column corner portion longitudinal reinforcement I11, column corner portion longitudinal reinforcement II 12 adopt major diameter reinforcing bar, and column corner portion longitudinal reinforcement I11, column corner portion longitudinal reinforcement II 12 length satisfy node core area cross-section height H1+ anchor connection length H2, and the reinforcing bar of square annular cavity angular region configuration is no less than 50% of cross-section arrangement of reinforcement volume and is no less than 4.
The key process of the application of the dry-wet combined connecting structure of the beam column of the prefabricated concrete structure is as follows: according to the post position, install interior outer tube, install the vertical and horizontal roof beam body (the vertical reinforcing bar of roof beam body inserts U type recess in proper order), install horizontal buckle in, interior vertical buckle.
The specific use and operation flow is as follows:
construction preparation (materials, anchoring heads, parts, products, machines and tools, and the like) → column installation → tubular cavity structure installation → installation position, elevation, cross-section information inspection → beam body support structure installation → transverse beam body steel bar insertion tubular cavity structure → longitudinal beam body installation → longitudinal beam body steel bar insertion tubular cavity structure → beam body installation quality inspection → installation of inner transverse buckle plates, inner longitudinal buckle plates → concealed acceptance and acceptance → grouting and pouring.
Example two
Taking an assembly type concrete frame structure as an example, the beam adopts an assembly type beam, the maximum size of the cross section of the beam is 300 multiplied by 1200, the column adopts a prefabricated column, the size of the cross section of the column is 700 plus 1000mm, the longitudinal stress steel bar of the beam column adopts HRB500, the diameter is 22 to 28, and the beam column joint adopts the dry-wet combined connecting structure of the beam column of the assembly type concrete structure.
An implementation method of a dry-wet combined connecting structure of a beam column of an assembled concrete structure adopts the dry-wet combined connecting structure of the beam column of the assembled concrete structure in the first embodiment;
step 1: splitting a prefabricated component of a concrete frame structure;
according to a design drawing, a BIM information model of REVIT or PLANBAR is utilized to split the concrete frame structure into accurate and manufacturable parts such as a transverse beam body, a longitudinal beam body, an upper main body, a lower main body and a core node area;
step 2: deepening design of the member and the beam column core node;
the node core area, particularly the beam column node core area, is divided into side column nodes, center column nodes and corner column nodes according to the combination form of a structural column, a structural beam and the like, and then relevant information of the column, the beam and the nodes is combined for further optimization and integration, the node types are optimized and integrated as much as possible, merging and merging are carried out, the precision is improved, and the cost is reduced;
and step 3: processing and manufacturing a cylinder cavity structural body;
combining the optimized node and the connection structure type, manufacturing a processing scheme, controlling the processing precision, rechecking the quality of a processed part, and then carrying out assembly verification, wherein the deviation of the processed internal and external dimensions is controlled within 1-2 mm;
the inspection contents include dimensional deviation, section position, U-shaped groove, concave-convex grating plate, corner region, connecting member position, material strength, thickness, etc. of the inner cylinder and the outer cylinder. Processing the manufactured cylinder cavity structure, sorting and stacking, and numbering the planting cores for use;
and 4, step 4: constructing a dry-wet combined connecting joint;
the process is as follows:
construction preparation (materials, anchoring heads, parts, products, machines and tools, and the like) → column installation → tubular cavity structure installation → installation position, elevation, cross-section information inspection → beam body support structure installation → transverse beam body steel bar insertion tubular cavity structure → longitudinal beam body installation → comprehensive beam body steel bar insertion tubular cavity structure → beam body installation quality inspection → installation of inner transverse buckle plates, inner longitudinal buckle plates → concealed acceptance and acceptance → grouting.
The beam column node connection structure way that this embodiment provided is mainly installed by the dry process, and the wet process grout is assisted, and its biggest advantage is node installation, reinforcing bar take one's place, connect fixedly, concrete construction etc. satisfy the advantage of modularization, integrated installation. Compared with the wet method node construction, the beam body reinforcing steel bars are directly installed in place, so that the reinforcing steel bars are saved, and the problems of reinforcing steel bar anchoring connection and reinforcing steel bar conflict in a node core area are solved; the connecting nodes do not need to support a template, concrete is directly poured, and the working procedures of template supporting, bracket erecting and the like in wet construction are omitted, and the construction problem is solved; the beam body and the column body are directly molded, so that the assembly rate is improved; in the node core area, the inner cylinder and the outer cylinder are coordinated consistently, so that the construction staggering problem of stirrup configuration and stirrup dense configuration in the node core area is solved; the column body reinforcing steel bars are connected and configured in a concentrated mode in the corner area, and the problems that the number of grouting is large, construction is complicated and quality is difficult to guarantee in the assembly type wet connection are solved.
Claims (9)
1. The utility model provides a prefabricated concrete structure beam column wet-dry combination joint construction, includes horizontal roof beam (7), longitudinal beam (8), its characterized in that: a cylinder cavity structure is arranged at the intersection of the transverse beam (7) and the longitudinal beam (8); the cylinder cavity structure comprises an outer cylinder (1) and an inner cylinder; the outer cylinder (1) and the inner cylinder enclose a square annular cavity, and four corners of the square annular cavity are provided with column corner longitudinal steel bars I (11) and column corner longitudinal steel bars II (12); transverse beam longitudinal reinforcements (9) and longitudinal beam longitudinal reinforcements (10) in the transverse beam (7) and the longitudinal beam (8) sequentially penetrate through the outer cylinder (1) and the inner cylinder, and the inner ends of the transverse beam longitudinal reinforcements (9) and the longitudinal beam longitudinal reinforcements (10) are connected with anchoring heads (13).
2. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 1, wherein: the outer cylinder (1) comprises an L-shaped outer cylinder plate I (1-1) and an outer cylinder plate II (1-2), and the outer cylinder plate I (1-1) and the outer cylinder plate II (1-2) are spliced into a rectangle; u-shaped grooves are formed in the cross sections of the outer barrel plate I (1-1) and the outer barrel plate II (1-2) corresponding to the transverse beam (7) and the longitudinal beam (8); the number of the U-shaped grooves on each side is consistent with that of the corresponding transverse beam longitudinal reinforcements (9) and longitudinal beam longitudinal reinforcements (10), the width of each U-shaped groove is 10mm larger than that of the corresponding transverse beam longitudinal reinforcements (9) and longitudinal beam longitudinal reinforcements (10), and the depth of each U-shaped groove is not less than the thickness of the protective layer plus 30 mm; and the transverse beam longitudinal steel bars (9) and the longitudinal beam longitudinal steel bars (10) penetrate through the corresponding U-shaped grooves.
3. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 2, wherein: the minimum thickness of the outer cylinder plate I (1-1) and the outer cylinder plate II (1-2) is not less than 5mm, and the outer cylinder plate I (1-1) and the outer cylinder plate II (1-2) are manufactured by processing Q235 steel or molding and pouring high-performance UHPC concrete.
4. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 3, wherein: the inner cylinder comprises two inner transverse sub-plates (2) and two inner longitudinal sub-plates (3) which are similar in structure, and the two inner transverse sub-plates (2) and the two inner longitudinal sub-plates (3) are intersected into a shape like a Chinese character 'jing';
the inner transverse sub-plate (2) comprises a web plate (2-1); the upper flange plates (2-2) are connected to the two sides of the upper edge of the web plate (2-1), and the lower flange plates (2-3) are connected to the two sides of the lower edge of the web plate (2-1); the upper and lower edges of the web plate (2-1) are concave-convex grating plates (2-4); the concave-convex grid plates (2-4) are opposite to the corresponding transverse beam longitudinal reinforcements (9) and the longitudinal beam longitudinal reinforcements (10), and the transverse beam longitudinal reinforcements (9) and the longitudinal beam longitudinal reinforcements (10) penetrate through the corresponding grooves in the concave-convex grid plates (2-4).
5. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 4, wherein: the two ends of the concave-convex grating plates (2-4) are provided with connecting pin keys (2-5); the two ends of the inner transverse sub-plate (2) are correspondingly connected with an inner transverse buckle plate (4) and an inner longitudinal buckle plate (5) through pin connecting keys (2-5).
6. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 5, wherein: a connecting piece (6) for connecting the outer cylinder (1) and the inner cylinder is arranged in the square annular cavity, and the connecting piece (6) is an HPB300 steel bar with the diameter not less than 20 mm; two ends of the connecting piece (6) are connected with the outer cylinder (1) and the inner cylinder in a welding or mechanical connection mode; the vertical installation distance of the connecting pieces (6) is not less than 300 mm.
7. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 5, wherein: the transverse beam longitudinal reinforcing steel bars (9) and the longitudinal beam longitudinal reinforcing steel bars (10) adopt large-diameter reinforcing steel bars, and the clear distance of the reinforcing steel bars is not less than 30mm and the larger value of the diameter of the reinforcing steel bars; the length of the steel bar in the beam body is L1+ L2+ L3 + of the outside section size of the outer cylinder (1) and the inner cylinder + the length of the anchoring head (13), the length of the steel bar in the beam body is not less than 15d, and d is the diameter of the steel bar.
8. The dry-wet combined connecting structure of the beam column of the prefabricated concrete structure as claimed in claim 5, wherein: the column corner longitudinal steel bars I (11) and the column corner longitudinal steel bars II (12) are arranged in a centralized manner at four corners of the square annular cavity; column corner longitudinal reinforcement I (11), column corner longitudinal reinforcement II (12) adopt the major diameter reinforcing bar, and column corner longitudinal reinforcement I (11), column corner longitudinal reinforcement II (12) length satisfy node core area cross-section height H1+ anchor connection length H2, and the reinforcing bar of square annular cavity bight regional configuration is no less than 50% of cross-section arrangement of reinforcement volume and is no less than 4.
9. A method for implementing a dry-wet combined connecting structure of a beam column of a fabricated concrete structure, which adopts the dry-wet combined connecting structure of the beam column of the fabricated concrete structure of any one of claims 5 to 8;
step 1: splitting a prefabricated component of a concrete frame structure;
according to a design drawing, a BIM information model of REVIT or PLANBAR is utilized to split the concrete frame structure into components which can be manufactured and constructed and are a transverse beam body, a longitudinal beam body, an upper main body, a lower main body and a core node area;
step 2: deepening design of the member and the beam column core node;
dividing the structure column into side column nodes, middle column nodes and corner column nodes according to the combination form of the structure column and the structure beam, and then combining the relevant information of the column, the beam and the nodes to further optimize and integrate; optimizing, integrating, merging and merging node types;
and step 3: processing and manufacturing a cylinder cavity structural body;
combining the optimized node and the connection structure type, manufacturing a processing scheme, controlling the processing precision, rechecking the quality of a processed part, and then carrying out assembly verification, wherein the deviation of the processed internal and external dimensions is controlled within 1-2 mm;
the inspection contents comprise size deviation, section position, U-shaped groove, concave-convex grating plate, corner area, connecting piece position, material strength and thickness of the inner cylinder and the outer cylinder;
processing the manufactured cylinder cavity structure, sorting and stacking, and numbering the planting cores for use;
and 4, step 4: constructing a dry-wet combined connecting joint;
the process is as follows:
construction preparation → column installation → installation of a cylindrical cavity structure → installation of a position, elevation and section information inspection → installation of a beam support structure → installation of a transverse beam body → insertion of a transverse beam body reinforcing steel bar into the cylindrical cavity structure → installation of a longitudinal beam body → insertion of a longitudinal beam body reinforcing steel bar into the cylindrical cavity structure → inspection of beam body installation quality → installation of an inner transverse buckle plate, an inner longitudinal buckle plate → concealed acceptance → grouting and pouring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224548.XA CN111255066A (en) | 2020-03-26 | 2020-03-26 | Dry-wet combined connecting structure for beam column of prefabricated concrete structure and implementation method |
| NL2027578A NL2027578B1 (en) | 2020-03-26 | 2021-02-18 | Prefabricated concrete structure beam-column dry-wet combined connection construction and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224548.XA CN111255066A (en) | 2020-03-26 | 2020-03-26 | Dry-wet combined connecting structure for beam column of prefabricated concrete structure and implementation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111255066A true CN111255066A (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010224548.XA Pending CN111255066A (en) | 2020-03-26 | 2020-03-26 | Dry-wet combined connecting structure for beam column of prefabricated concrete structure and implementation method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111255066A (en) |
| NL (1) | NL2027578B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126086A (en) * | 2022-08-13 | 2022-09-30 | 上海金鹿建设(集团)有限公司 | Assembled reinforced concrete beam column joint and construction method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB119987A (en) * | 1918-03-08 | 1918-10-24 | Charles Henry Heathcote | Improvements in or relating to Reinforced Concrete Constructions. |
| CN110016966B (en) * | 2019-04-18 | 2022-06-03 | 合肥工业大学 | T-shaped assembled node of prefabricated part composite beam-prefabricated superposed composite column |
| CN110747994A (en) * | 2019-10-31 | 2020-02-04 | 福州大学 | Ductile node structure of reinforced concrete frame |
-
2020
- 2020-03-26 CN CN202010224548.XA patent/CN111255066A/en active Pending
-
2021
- 2021-02-18 NL NL2027578A patent/NL2027578B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126086A (en) * | 2022-08-13 | 2022-09-30 | 上海金鹿建设(集团)有限公司 | Assembled reinforced concrete beam column joint and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2027578B1 (en) | 2021-09-02 |
| NL2027578A (en) | 2021-05-11 |
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