CN209942004U - Hollow floor structure with ribbed steel mesh hollow-out cast-in-situ concrete I-shaped section - Google Patents

Abstract

The utility model provides a ribbed steel mesh hollow-cast-in-place concrete I-shaped section hollow floor structure, which comprises a bottom template, a vertical frame, vertical reinforcing steel bars, multi-ribbed beam reinforcing steel bars, upper flange plate reinforcing steel bars, lower flange plate reinforcing steel bars, concrete and a reinforcing steel bar body; the bottom template surface is provided with a plurality of grudging posts, fixedly connected with erects the reinforcing bar between a plurality of grudging posts, forms the rectangle module, the inside bottom of rectangle module is provided with flange face reinforcing bar down. The utility model discloses a steel reinforcement cage structure is through laying the reinforcing bar body in close rib roof beam reinforcing bar criss-cross formation unit net, water the concrete again, the concrete is pour the packing with lower limb face reinforcing bar, close rib roof beam reinforcing bar and upper limb flange face reinforcing bar, form hollow floor cover layer, this structure not only can reduce floor and building dead weight, and the cost of manufacture that has reduced moreover and correspond the construction degree of difficulty that needs to carry out anti-floating measure when pouring because of the concrete, the security and the reliability that the basis bore have been increased.

Description

Hollow floor structure with ribbed steel mesh hollow-out cast-in-situ concrete I-shaped section

Technical Field

The utility model relates to a construction field, in particular to hollow superstructure structure of I shape cross-section of ribbed steel mesh fretwork casting concrete.

Background

The building cover is an important component of the building structure, the manufacturing cost of the concrete building cover accounts for nearly 30 percent of the total manufacturing cost of the whole civil construction, and the self weight of the concrete building cover is about half of the total weight. The proper floor design scheme is selected, the correct method is adopted, the design calculation is reasonably carried out, and the method plays an important role in the whole building structure.

In the existing cast-in-situ concrete floor, the concrete consumption is large, the construction period is long, and the construction cost is high; the buoyancy generated to the floor during concrete pouring needs to be emphasized to implement anti-floating measures, so that the construction difficulty is high, and time and labor are wasted; when the floor is used, the cast-in-place concrete floor has large dead weight, poor compression and seismic resistant effects and great potential safety hazards.

It is therefore desirable to provide a steel reinforcement cage structure for a bored pile that solves the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ribbed steel mesh hollow-cast floor structure with T-shaped section, which has lower cost and construction difficulty; the technical problems that the existing cast-in-place concrete floor system is high in cost and the construction difficulty of corresponding anti-floating measures is high are solved.

The utility model provides a hollow superstructure structure of ribbed steel mesh fretwork cast-in-place concrete I shape cross-section, a serial communication port, include:

the steel bar reinforced concrete structure comprises a bottom template, a vertical frame, vertical steel bars, ribbed beam steel bars, upper flange plate steel bars, lower flange plate steel bars, concrete and steel bar bodies;

the bottom formwork is provided with a plurality of vertical frames on the surface, vertical reinforcing steel bars are fixedly connected among the vertical frames to form a rectangular module, bottom flange plate reinforcing steel bars are arranged at the bottom end inside the rectangular module, ribbed beam reinforcing steel bars are fixedly bound on the top surfaces of the bottom flange plate reinforcing steel bars, and the rectangular module is divided into a plurality of unit grids by the ribbed beam reinforcing steel bars in a criss-cross mode;

be provided with the reinforcing bar body in the unit net, just reinforcing bar body lateral wall and close rib roof beam reinforcing bar lateral wall ligature are connected, reinforcing bar body top and last flange face reinforcing bar fixed connection, it has the concrete to fill between inside and the ribbed steel mesh fretwork box outer wall of unit net.

The hollow floor cover layer is formed by placing the steel bar bodies in the unit grids formed by criss-cross intersection of the multi-ribbed beam steel bars and pouring concrete, and pouring and filling the lower flange plate steel bars, the multi-ribbed beam steel bars and the upper flange plate steel bars by the concrete, so that the self weight of the floor and the building can be reduced, the safety and the reliability of foundation bearing are improved, the integral construction method is convenient to operate, and the working efficiency of constructors is greatly improved.

Hollow superstructure structure of ribbed steel mesh fretwork cast-in-place concrete I shape cross-section in, the rib beam reinforcing bar of densely packing includes that the roof beam bottom indulges muscle, rib beam top and indulges muscle and rib beam stirrup, the rib beam top is indulged muscle both ends and the perpendicular alternately ligature of the perpendicular cross of the frame reinforcing bar that is parallel to each other, the rib beam top is indulged the muscle below and is equipped with the roof beam bottom and is indulged the muscle, the roof beam bottom is indulged the muscle and is connected with lower limb face reinforcement, just muscle and the fixed ligature of muscle outer wall are indulged to the rib beam top and roof beam bottom have the rib beam stirrup.

The rib top is indulged the muscle both ends through the rib top and is tied up with the perpendicular alternately of the perpendicular reinforcing bar of erectting that is parallel to each other, and the muscle is indulged to the roof beam bottom and is connected with bottom wing edge face reinforcement, promotes steel bar structure stability, is convenient for follow-up steel mesh body of laying, and concrete placement packs bottom wing edge face reinforcing bar.

Ribbed steel mesh fretwork cast-in-place concrete I shape cross-section hollow superstructure structure in, the reinforcing bar body is including ribbed steel mesh fretwork box, reticular lamina, connecting plate and strengthening rib, ribbed steel mesh fretwork box outer wall passes through connecting plate fixedly connected with reticular lamina, just the welding of reticular lamina outer wall has the strengthening rib.

The steel reinforcement body increases netted board on the basis of ribbed steel mesh fretwork box and makes the steel mesh fretwork impervious, and the transition seepage when avoiding concreting, the welding of netted board outer wall has the strengthening rib to consolidate netted board wholly, has promoted structural strength, makes the structure more stable.

Ribbed steel mesh fretwork cast in situ hollow superstructure structure of I shape cross-section, ribbed steel bar mesh fretwork box includes fretwork net, fretwork end net and support reinforcing bar frame, support reinforcing bar frame outer wall fixedly connected with fretwork net all around, fretwork end net has two sets ofly, and fixed connection fretwork net both ends respectively.

The air permeability of the ribbed reinforcing mesh hollow box body is good through the supporting reinforcing frame, the buoyancy is reduced during concrete pouring, the anti-floating measures are simplified, and the working procedures and anti-floating cost occupied by the anti-floating measures are reduced; and when the concrete is poured, the pouring condition of the concrete at the bottom of the box body can be observed, the compatibility with the concrete is good, the mortar permeates into meshes, and the generation of cracks on the surface of the concrete is inhibited.

Ribbed steel mesh fretwork cast in situ concrete I shape cross-section hollow superstructure structure in, fretwork net both ends and fretwork end net junction fixed mounting have steel sheet design limit, bordure ribbed steel mesh fretwork box both ends through steel sheet design limit, prevent that the box is loose, warp, promote frame construction stability.

Ribbed steel mesh fretwork cast-in-place hollow superstructure structure of I shape cross-section, fretwork net, a fretwork end net, No. two fretwork end nets are makeed by the steel wire netting body, just the expansion mesh number of steel wire netting body is between ~ the mesh, and the net body material makes the box when concreting, can be with during its expansion mesh of mortar infiltration, with the good suppression concrete surface crack production of concrete compatibility.

Ribbed steel mesh fretwork cast-in-place concrete I shape cross-section hollow superstructure structure in, support reinforcing bar frame height and fretwork end net highly uniform, support reinforcing bar frame including a reinforcing bar and No. two reinforcing bars, a reinforcing bar is U type structure, the welding of a reinforcing bar inner wall has No. two reinforcing bars, just No. two reinforcing bars and a reinforcing bar cross-section mutually perpendicular, the bar diameter of a reinforcing bar and No. two reinforcing bars all is between 3mm ~ 5mm, No. two reinforcing bar length are between 600mm ~ 800mm, interval between adjacent No. two reinforcing bars is between 100mm ~ 110mm, a reinforcing bar quantity is between 5 ~ 7.

Form the support reinforcing bar frame through a reinforcing bar and No. two steel bar welding, simple structure is firm, and the production installation of being convenient for is convenient for carry out the atress to the steel mesh inside and supports, prevents that ribbed reinforcing bar net fretwork box body atress from being out of shape, promotes its compressive resistance.

In the ribbed steel mesh hollow cast-in-place concrete I-shaped section hollow floor structure, the reinforcing steel bar body is of a cuboid structure, the direction perpendicular to the bottom template is taken as the height direction, the height ratio of the unit grids to the reinforcing steel bar body is between 5:3 and 5:4.5, and the distance between the periphery of the reinforcing steel bar body and the rib beam stirrups is between 15 and 25 mm.

Through highly injecing the steel mesh fretwork according to the internal dimension of unit net, the constructor of being convenient for is to the accurate installation of steel mesh fretwork, and reserves concreting thickness, promotes structural stability.

Ribbed steel mesh fretwork cast in situ concrete I shape cross-section hollow superstructure structure in, the reinforcing bar diameter of top flange face reinforcing bar is 10mm, and arranges the interval and be located between 145mm ~ 155mm, the reinforcing bar diameter of rib roof beam stirrup is 6mm, and arranges the interval and be located between 195mm ~ 205 mm.

Through carrying out rational arrangement with upper limb listrium reinforcing bar and rib beam stirrup, not only promote the floor atress, and be convenient for constructor follow-up laying ribbed reinforcing bar net fretwork box, promote constructor work efficiency greatly.

Ribbed steel mesh fretwork cast in situ concrete I shape cross-section hollow superstructure structure in, the aggregate diameter of concrete is between 5 ~ 20mm, and the maximum particle diameter is between 30mm ~ 31.5mm, the material ratio of concrete, when making to pour ribbed steel mesh fretwork box, the mesh infiltration can be followed to the mortar, fills the bottom half.

The utility model discloses compare in prior art, its beneficial effect is:

the utility model discloses a hollow superstructure structure of ribbed steel mesh fretwork pouring concrete I shape cross-section lays the reinforcing bar body through crossing formation unit net with great ease at close rib beam reinforcing bar, waters the concrete again, and the concrete is pour lower flange face reinforcing bar, close rib beam reinforcing bar and upper flange face reinforcing bar and is filled, forms hollow floor cover layer.

The structure can reduce the dead weight of the floor slab and the building, reduce the manufacturing cost and the construction difficulty of anti-floating measures correspondingly required when concrete is poured, and increase the safety and the reliability of foundation bearing.

Meanwhile, the integral construction method is convenient to operate, the working efficiency of constructors is greatly improved, the ribbed steel mesh hollow-cast-in-place concrete I-shaped hollow floor inner mold is a steel bar body, the steel mesh material and the concrete have good compatibility, cement mortar permeates into the steel mesh for bonding, the ribbed steel mesh is wrapped to inhibit the generation of microcracks, and the waterproof performance and the safety performance of the structure are enhanced.

The steel reinforcement body increases netted board on the basis of ribbed steel mesh fretwork box and makes the steel mesh fretwork impervious, and the transition seepage when avoiding concreting, the welding of netted board outer wall has the strengthening rib to consolidate netted board wholly, has promoted structural strength, makes the structure more stable.

Meanwhile, the ribbed steel bar hollow net box body is low in production cost, simple to assemble and strong in bearing capacity, the working efficiency of constructors is greatly improved, and the construction period is shortened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

FIG. 1 is a top view of a hollow floor structure with I-shaped section and hollow-cast-in-place concrete with ribbed steel mesh of the present invention;

FIG. 2 is a schematic diagram of a cell lattice structure of a ribbed steel mesh hollow-out concrete cast-in-situ hollow floor structure with an I-shaped cross section;

FIG. 3 is a schematic cross-sectional view of the steel mesh structure of the ribbed steel mesh hollow-out concrete cast-in-situ floor system structure of the present invention;

FIG. 4 is a schematic perspective view of a hollow box 4 with a ribbed steel mesh for hollow-out concrete floor with I-shaped cross section according to the present invention;

fig. 5 is a schematic view of the internal structure of the ribbed steel mesh hollow-out box 4 for the ribbed steel mesh hollow-out cast-in-situ concrete hollow floor structure of the utility model.

Description of the drawings: the steel bar net comprises a vertical frame 1, multi-ribbed beam steel bars 11, beam bottom longitudinal bars 111, ribbed beam top longitudinal bars 112, ribbed beam stirrups 113, upper flange plate face steel bars 12, unit grids 2, concrete 3, ribbed steel bar net hollow boxes 4, hollow nets 41, hollow nets 42, supporting steel bar frames 43, first steel bars 431, second steel bars 432, erection steel bars 5, steel plate shaping edges 6, steel bar bodies 7, net-shaped plates 71, connecting plates 72 and reinforcing bars 73.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, fig. 1 is a top view of a ribbed steel mesh hollow-cast-in-place concrete i-section hollow floor structure of the present invention; FIG. 2 is a schematic diagram of a lattice structure of the ribbed steel mesh hollow-out concrete hollow floor structure with I-shaped cross section. The ribbed steel mesh hollow-out cast-in-situ concrete I-shaped section hollow floor structure comprises:

the steel bar reinforced concrete structure comprises a bottom template, a vertical frame 1, a vertical steel bar 5, a multi-ribbed beam steel bar 11, an upper flange plate face steel bar 12, a lower flange plate face steel bar 13, concrete 3 and a steel bar body 7;

the surface of the bottom template is provided with a plurality of vertical frames 1, and vertical reinforcing steel bars 5 are fixedly connected among the vertical frames 1 to form a rectangular module, the bottom end inside the rectangular module is provided with lower flange plate face reinforcing steel bars 13, dense ribbed beam reinforcing steel bars 11 are fixedly bound on the top faces of the lower flange plate face reinforcing steel bars 13, and the rectangular module is divided into a plurality of unit grids 2 by the dense ribbed beam reinforcing steel bars 11 in a criss-cross mode;

be provided with the reinforcing bar body 7 in the unit net 2, and the reinforcing bar body 7 lateral wall is connected with the 11 lateral walls ligatures of close rib beam reinforcing bar, 7 tops of reinforcing bar body and last flange face reinforcing bar 12 fixed connection, and it has concrete 3 to fill between 2 inside and 4 outer walls of ribbed steel mesh fretwork box of unit net.

Wherein, muscle 112 and rib stirrup 113 are indulged at the rib top to the rib 11 including the roof beam bottom indulge muscle 111, rib top, and rib top is indulged muscle 112 both ends and is tied up with the perpendicular intersection of the upright reinforcing bar 5 that is parallel to each other, and rib top is indulged muscle 112 below and is equipped with the roof beam bottom and indulge muscle 111, and the roof beam bottom is indulged muscle 111 and is connected with 13 ligatures of lower flange face reinforcing bar, and rib top is indulged muscle 112 and the fixed ligature of muscle 111 outer wall has rib stirrup 113 with the roof beam bottom.

The rib beam steel bars 11 are vertically crossed and bound with the erection steel bars 5 parallel to each other through the longitudinal bars 112 at the top of the rib beam, the longitudinal bars 111 at the bottom of the beam are bound and connected with the steel bars 13 on the bottom flange plate, the stability of the steel bar structure is improved, the steel net body 7 is convenient to subsequently lay, and the concrete 3 is poured and filled with the steel bars 13 on the bottom flange plate.

The steel bar body is of a cuboid structure, the direction perpendicular to the bottom formwork is taken as the height direction, the ratio of the height of the unit grids to the height of the steel bar body is 5: 3-5: 4.5, the distance between the periphery of the steel bar body and the rib beam stirrups is 15-25 mm, the height of the steel mesh openings is limited according to the internal dimension of the unit grids 2, construction workers can conveniently and accurately install the steel mesh openings, the thickness of poured concrete is reserved, and the structural stability is improved.

The aggregate diameter of the concrete is between 5mm and 20mm, the maximum particle diameter is between 30mm and 31.5mm, and the material proportion of the concrete 3 enables mortar to permeate from meshes to fill the bottom of the box body when the unit grids 2 are poured.

The I-shaped section hollow floor system of the embodiment is characterized in that the steel bar bodies 7 are placed in the unit grids 2 formed by criss-cross intersection of the multi-ribbed beam steel bars 11, concrete 3 is poured, and the concrete 3 pours and fills the bottom flange plate face steel bars 13, the multi-ribbed beam steel bars 11 and the upper flange plate face steel bars 12 to form the hollow floor cover layer, so that the dead weight of the floor and the building can be reduced, the safety and the reliability of foundation bearing are improved, the integral construction method is convenient to operate, and the working efficiency of constructors is greatly improved.

Please refer to fig. 4 and 5; FIG. 4 is a schematic perspective view of a hollow box 4 with a ribbed steel mesh for hollow-out concrete floor with I-shaped cross section according to the present invention; fig. 5 is a schematic view of the internal structure of the ribbed steel mesh hollow-out box 4 for the ribbed steel mesh hollow-out cast-in-situ concrete hollow floor structure of the utility model.

The ribbed steel bar mesh hollow box body 4 comprises hollow meshes 41, hollow meshes 42 and a support steel bar frame 43, the outer walls of the periphery of the support steel bar frame 43 are fixedly connected with the hollow meshes 41, and the hollow meshes 42 are divided into two groups and are respectively and fixedly connected with the two ends of the hollow meshes 41.

The air permeability of the hollow-out net 41 is good through the reticular cavity inside the ribbed reinforcing mesh hollow-out box body 4 and the supporting reinforcing frame 43, the buoyancy is reduced during concrete pouring, the anti-floating measures are simplified, the working procedures and the anti-floating cost occupied by the anti-floating measures are reduced, the concrete pouring condition at the bottom of the box body can be observed during concrete pouring, the compatibility with the concrete is good, the mortar permeates into meshes, and the generation of concrete surface cracks is inhibited.

Wherein, the connection of the two ends of the hollow net 41 and the hollow net 42 is fixedly provided with a steel plate shaping edge 6, and the two ends of the ribbed steel net hollow box 4 are wrapped through the steel plate shaping edge 6, so that the box is prevented from loosening and deforming, and the structural stability of the frame is improved.

The hollow net 41 and the hollow net 42 are made of steel net bodies, and the mesh number of the expanded mesh of the steel net bodies is between 3 and 5 meshes. The steel net body material can enable mortar to permeate into the expanded meshes when the box body is used for pouring concrete, and the steel net body material has good compatibility with the concrete and inhibits the generation of concrete surface cracks.

The height of the support reinforcing steel bar frame 43 is consistent with the height of the hollow-out net 42, the support reinforcing steel bar frame 43 comprises a reinforcing steel bar 431 and a reinforcing steel bar 432, the reinforcing steel bar 431 is of a U-shaped structure, the reinforcing steel bar 432 is welded to the inner wall of the reinforcing steel bar 431, the sections of the reinforcing steel bar 432 and the reinforcing steel bar 431 are perpendicular to each other, the diameters of the reinforcing steel bars of the reinforcing steel bar 431 and the reinforcing steel bar 432 are all between 3mm and 5mm, the length of the reinforcing steel bar 432 is between 600mm and 800mm, the distance between every two adjacent reinforcing steel bars 432 is between 100mm and 110mm, and the number of the reinforcing steel bars 431 is between 5 and 7.

Form support reinforcing bar frame 43 through a reinforcing bar 431 and No. two reinforcing bars 432 welding, simple structure is firm, and the production installation of being convenient for is convenient for carry out the atress to steel mesh 41 inside and supports, prevents that ribbed steel mesh fretwork box 4 atress from being out of shape, promotes its crushing resistance.

In this embodiment, when assembling the ribbed steel bar mesh hollow-out box 4, the hollow-out mesh 41 is opened, the steel bar mesh is bent from the pressed bending mark, the shaped edge of the hollow-out mesh 42 is placed in the V-shaped rib at the edge of the hollow-out mesh 41, the folded steel plate mesh strand is placed with the Jiong-shaped support reinforcement frame 43 formed by welding the first steel bar 431 and the second steel bar 432, and the two ends of the hollow-out mesh 41 are spliced and welded to form the ribbed steel bar mesh hollow-out box 4.

The ribbed steel mesh hollow-out box body 4 is simple in structure and convenient to assemble, the steel mesh material and concrete are good in compatibility, cement mortar is bonded in the steel mesh after permeating, the ribbed steel mesh is wrapped to inhibit microcracks, and the structural waterproof performance and the safety performance are enhanced.

Meanwhile, the ribbed steel bar hollow net box body is low in production cost, simple to assemble and strong in bearing capacity, the working efficiency of constructors is greatly improved, and the construction period is shortened.

Please refer to fig. 3; FIG. 3 is a schematic cross-sectional view of the steel mesh structure of the ribbed steel mesh hollow-out concrete cast-in-situ floor system structure of the present invention;

the steel bar body 87 comprises a ribbed steel mesh hollow box body 4, a mesh plate 71, a connecting plate 72 and reinforcing ribs 73, the outer wall of the ribbed steel mesh hollow box body 4 is fixedly connected with the mesh plate 71 through the connecting plate 72, and the reinforcing ribs 73 are welded on the outer wall of the mesh plate 71.

The steel reinforcement body 7 increases netted board 71 through the connecting plate 72 on the basis of ribbed steel mesh fretwork box 4, makes the impervious ability reinforcing of steel mesh fretwork, and the transition seepage when avoiding concreting, the welding of netted board 71 outer wall has strengthening rib 73 to consolidate netted board 71 is whole, has promoted structural strength, makes the structure more stable.

Installation the utility model discloses a construction flow of ribbed steel mesh fretwork cast-in-place concrete I shape cross-section hollow superstructure structure includes:

before construction, constructors need to carry out construction preparation firstly.

The construction method comprises the steps that a constructor is familiar with construction drawings at first, specification models and various technical parameters of the ribbed steel mesh hollow box body are made clear according to design requirements, then according to the size of a column net opening and the pre-embedding condition of installation reservation, the various specification models and lengths of the ribbed steel mesh hollow box body are determined, a box body placing diagram is drawn, the number of the box body is counted, a special ribbed steel mesh hollow net piece is ordered, and then the ribbed steel mesh hollow box body is assembled on site.

Then, construction operation is carried out:

in a first step, the reinforcement body 7 is assembled.

Firstly, the hollow-out net 41, the hollow-out net 42 and the support reinforcing steel frame 43 are transported to a construction site according to the proportion of the total box body usage amount to be carried out on the site, the hollow-out net 41 and the hollow-out net 42 are both made of steel meshes with the thickness of 0.7mm, the steel meshes comprise steel plate expanded meshes, V-shaped ribs and steering connecting pieces, the mesh number of the steel plate expanded meshes is 3 meshes in the embodiment, and the steel meshes are made of high-quality galvanized rolled plates through the processes of punching, stretching, forming, welding and the like.

The workers check and accept the steel net hollow with the ribs according to the specification and the quantity by 1 person of each material worker and quality inspector; the tester 1 is responsible for sampling and inspecting, and can assemble after the inspection is qualified.

When the ribbed reinforcing mesh hollow-out box body 4 is assembled, a first reinforcing steel bar 431 and a second reinforcing steel bar 432 are welded to form an Jiong-shaped supporting reinforcing steel bar frame 43, the first reinforcing steel bar 431 is of a U-shaped structure, the second reinforcing steel bar 432 is welded to the inner wall of the first reinforcing steel bar 431, the sections of the second reinforcing steel bar 432 and the first reinforcing steel bar 431 are perpendicular to each other, the diameters of the first reinforcing steel bar 431 and the second reinforcing steel bar 432 are all between 3mm and 5mm, the length of the second reinforcing steel bar 432 is between 600mm and 800mm, the distance between every two adjacent reinforcing steel bars 432 is between 100mm and 110mm, and the number of the first reinforcing steel bars 431 is between 5 and 7.

And then opening the hollow net 41, bending the steel plate from the pressed bending mark, then placing the steel plate fixed edge 6 into the V-shaped rib at the edge of the hollow net 41, placing the steel plate fixed edge in the folded steel plate net strand, splicing and welding two ends of the hollow net 41 to manufacture the ribbed steel bar net hollow box body 4.

The hollow net 41 forms the periphery of the ribbed reinforcing mesh hollow box body 4, the hollow net 42 and the supporting hollow net 41 form two end sections of the box body, the height of the internal support frame 43 is the same as the height of the inside of the box body, and the internal support frame 43 is in contact with the hollow net 41 and bears positive pressure load together.

After the ribbed steel bar hollow net box body 4 is assembled, the outer wall of the ribbed steel bar hollow net box body 4 is provided with the net-shaped plate 71 through the mounting and connecting plate 72, so that the impermeability of the steel net hollow is enhanced, transition leakage during concrete pouring is avoided, the outer wall of the net-shaped plate 71 is welded with the reinforcing ribs 73, the whole net-shaped plate 71 is reinforced, the structural strength is improved, and the structure is more stable.

Second, the payoff is measured.

And (4) guiding and measuring the axis by a constructor by using a theodolite or a total station according to the drawing requirement to prepare for supporting the formwork by the bracket.

And thirdly, building a formwork support.

Firstly, constructors set up formwork supports according to the space and the step distance of the vertical frames 1 of the formwork support scheme and the support form of the beam slab bottom, the lower floor slab has the capacity of bearing upper layer load, the vertical frames 1 of the upper layer support correspond to the vertical columns of the lower floor vertical frame, and the skid is laid.

When the floor is converted, the bearing capacity of the supporting formwork is high, the bottom end of the supporting formwork upright post is made of battens, the length of the strip-shaped battens is more than 3 meters, the integral stress is achieved, and the floor is prevented from being damaged due to the fact that the bottom end of the supporting formwork upright post bears the upper large load.

Secondly, for a cast-in-place plate with the span of not less than 4m, a template of the cast-in-place plate is arched according to design requirements; when no specific design requirement exists, the arching height is 1/1000-3/1000 of the span.

And fifthly, laying a bottom template and snapping a line.

The constructor lays a bottom template on the formwork according to a construction drawing, and pops out pre-buried reserved position lines such as hidden beams, multi-ribbed beam steel bar 11 position lines, ribbed steel bar net hollow box body 4 control lines, steel bar distribution lines, hydroelectric installation pipelines and the like on the template, so that installation errors are reduced, and control and check in construction are facilitated.

And sixthly, binding main beam and multi-ribbed beam steel bars 11.

The constructor puts the reinforcing steel bars according to the position line of the drawn reinforcing steel bars, the reinforcing steel bars 13 on the lower flange face penetrate the reinforcing steel bars on the lower portions of the reinforcing steel bars 11 of the hidden beams and the multi-ribbed beams, then the reinforcing steel bars 11 of the hidden beams and the multi-ribbed beams are bound, the short-span bottom plate reinforcing steel bars are laid firstly, the long-span bottom plate reinforcing steel bars are laid secondly, and the protective layer cushion blocks are arranged according to requirements.

The ribbed beam reinforcing steel bars 11 are crossed vertically and horizontally to form unit grids 2, a ribbed reinforcing mesh hollow box body 4 is convenient to place, the safety and reliability of foundation bearing are improved, the whole construction method is convenient to operate, and the working efficiency of constructors is greatly improved.

And seventhly, installing the steel bar body 7, and accurately placing the steel bar body 7 according to a control line after binding bottom steel bars such as the steel bars 11 of the multi-ribbed beam, the steel bars 13 of the lower flange plate surface and the like and pre-burying pipelines such as water, electricity and the like.

Firstly, hoisting the assembled reinforcement body 7 to an operation part by using a special lifting rope for a tower crane, and manually assisting to carve a steel mesh in place; construction is carried out on each floor, each carpenter class is divided according to a plane construction section, 2-4 persons are selected, the specification number of the steel bar bodies 7 is counted, the steel bar bodies 7 are lifted and conveyed into an appointed placing area, and 6-10 persons of the carpenter classes are responsible for placing in a partition mode according to the positions of the bullet lines.

Secondly, in the installation process, in order to ensure the accurate position and the whole longitudinal and transverse arrangement and ensure the geometric dimension of the hollow floor rib beam and the upper and lower plate concrete, constructors need to place the reinforcing steel body 7 according to a position control line of the reinforcing steel body 7 on the template, the lower part of the reinforcing steel body is directly placed on the lower flange reinforcing steel bar, the net distance between the ribs around the reinforcing steel body 7 and the rib beam stirrups 113 is controlled to meet the design requirement when the reinforcing steel body is placed, and the design is preferably 15-25 mm when the design is not required.

And in 7 installation of the reinforcing bar body, the frame plate is laid at any time, protects reinforcing bar and 7 finished products of the reinforcing bar body, and is forbidden directly to trample, leads to steel mesh fretwork box body to warp, and when local steel mesh fretwork box body trampled and trampled the deformation, the application hook pole is dug the depressed part and is leveled.

After the box body is placed, the direction perpendicular to the bottom formwork is taken as the height direction, the ratio of the height of the unit grids 2 to the height of the steel bar body 7 is 5: 4-5: 4.5, and the distance between the periphery of the steel bar body 7 and the rib beam stirrups 113 is 15-25 mm.

Through highly injecing the steel mesh fretwork according to the internal dimension of unit net 2, the constructor of being convenient for is to the accurate installation of steel mesh fretwork, and reserves concreting thickness, promotes structural stability, and after concreting 6, pouring cavity 7 is filled, treats that the concrete sets up the shaping back, and this structure carries out the atress to ribbed steel bar fretwork net box 4 and lifts, avoids the steel mesh fretwork to drop, increases structural stability.

And eighthly, pre-burying pipelines such as water, electricity and the like.

Firstly, in the construction process, the pre-embedding reservation work of the installation engineering must be performed in parallel with the binding of the reinforcing steel bars and the installation process of the reinforcing steel bar body 7 in a crossed manner, otherwise, the pre-embedding reservation work is difficult to insert afterwards.

Secondly, the embedded horizontal pipeline is arranged at the hidden beam or between the steel bars 11 of the multi-ribbed beam as much as possible according to the pipe diameter. The pipelines are intensively placed in the ribbed beam reinforcing steel bars 11, if horizontal pipelines, electric wire boxes and the like cannot avoid blocks, a block segmentation method can be adopted, notches are sawed on the box body to avoid, and after the pipelines are installed, the notches are tightly sealed to prevent concrete from flowing into the hollow pipe cavity.

Simultaneously, pass the vertical pipeline of floor and should use pre-buried steel casing to it is firm with framework of steel reinforcement welding position according to the marking off position, its center allows deviation control within 3mm, and the pre-buried box of electric wire is laid in the centre of lower part rib, if when not matching with the rib width, lays pre-buried box after handling ribbed steel mesh fretwork bottom.

When the hanging is needed to be arranged under the cast-in-place hollow floor, the hanging points are preferably arranged in the ribs, and the bearing capacity of the hanging is tested when the hanging points are arranged on the reinforcing steel bars 13 on the lower flange plate surface.

And step nine, laying and binding the upper flange plate face steel bars 12.

Firstly, after the work of placing, pre-burying and the like of hydropower is completely finished, constructors lay and bind the upper flange plate face steel bars 12, two upper flange plate face steel bars 12 are arranged in the upper flange plate face steel bars 12 along the length direction of the steel bar body 7 and are connected to the bottom surface of the upper ribbed beam steel bar 11 in series for preventing the steel bar body 7 from floating, and the upper part of the steel bar body 7 is bound with the upper flange plate face steel bars 12.

Secondly, the upper flange plate face steel bars 12 are bound according to the specification requirements, and the intersection points of the upper flange plate face steel bars 12 and the ribbed beam steel bars 11 are bound.

And step ten, checking and accepting.

Firstly, the construction party should carry out self-checking, and after the self-checking is qualified, the supervision is reported to carry out the inspection and acceptance of the hidden project, and after the inspection and acceptance is qualified, the construction party can carry out the next procedure construction and make a record.

Step ten, paving a concrete pouring sidewalk.

Constructors can build a route according to concrete, make a temporary pavement overhead, forbid the direct pressing of construction machines on the steel mesh hollow box body, and operators can not directly tread the ribbed steel mesh hollow box body 4 and the steel bars so as to avoid damaging the box body and the finished steel bar products.

Meanwhile, before the concrete is poured and tamped, 4-6 persons are selected by the carpenter to check the arrangement position of the steel mesh hollow box body and adjust the ribbed steel mesh hollow.

And step ten, pouring concrete 3.

Firstly, the constructor entrusts a qualified detection mechanism to determine the concrete mixing ratio according to the design requirements, the particle size of the coarse aggregate of the concrete 3 is preferably 5-20mm in the embodiment, and the maximum particle size is not more than 31.5 mm. In this embodiment, the slump of the concrete is preferably controlled to be 160-180 mm, and the slump of the seven-T section is preferably 190mm in this embodiment, and is not preferably larger than 210 mm.

Secondly, before concrete pouring, a specially-assigned person is required to inspect and maintain the reinforcement body 7, and when the position deviates, the reinforcement body is corrected in time.

When the concrete is poured, pumping is adopted, one-step pouring forming is carried out, the concrete is unloaded uniformly, and the steel mesh hollow box body is prevented from being crushed due to overhigh accumulation.

When the concrete is vibrated, the template is wetted and then poured; the concrete is preferably poured alternately, commercial concrete is distributed in the steel bars 11 of the multi-ribbed beam by a distributor, the concrete amount is larger than or equal to that required by the lower flange, and the pouring advancing direction is performed gradually along the axial direction of the multi-ribbed beam.

When vibrating, in the embodiment, the vibrating rods with the diameter of phi 30 or 50 are preferably adopted on two sides of the bottom surfaces of the ribbed beam steel bars 11 and the ribbed steel bar mesh hollow box body 4, the surface layer adopts a flat plate vibrator, the vibrating rods are strictly forbidden to directly vibrate the steel mesh hollow box body, the loose structure is avoided, and the stability of the whole structure is improved.

And thirteenth, concrete curing.

After the concrete is poured, the concrete is covered by felt, a straw curtain or a plastic film, the surface of the concrete is kept moist, if the environment is dry and the temperature is high, the watering frequency is correspondingly increased, the construction is carried out in winter, the watering maintenance is strictly forbidden, and heat preservation measures are taken to prevent the concrete from being frozen.

And fourteenth, removing the template.

When the strength of the concrete reaches the stripping strength required by design or specification, the constructor removes the template and the support again, and the removal sequence and the safety measures are carried out according to the special construction scheme of the template support, so as to ensure the structural stability of the ribbed steel mesh hollow-cast concrete T-shaped section hollow floor.

The utility model discloses a hollow superstructure structure of ribbed steel mesh fretwork pouring concrete I shape cross-section lays the reinforcing bar body 7 through forming unit net 2 at close rib beam reinforcing bar 11 vertically and horizontally alternately, waters concrete 3 again, and concrete 3 pours the packing with bottom flange face reinforcing bar 13, close rib beam reinforcing bar 11 and top flange face reinforcing bar 12, forms hollow floor layer.

The structure can not only reduce the self weight of the floor slab and the building, but also reduce the manufacturing cost and the construction difficulty of anti-floating measures required when the concrete is poured correspondingly, and increase the safety and the reliability of the foundation bearing;

meanwhile, the integral construction method is convenient to operate, the working efficiency of constructors is greatly improved, the ribbed steel mesh hollow-cast-in-place concrete I-shaped hollow floor internal mold is a steel bar body 7, the steel mesh material and the concrete have good compatibility, cement mortar permeates into the steel mesh for bonding, the ribbed steel mesh is wrapped to inhibit the generation of microcracks, and the structural waterproof performance and the safety performance are enhanced;

the steel reinforcement body 7 is additionally provided with the mesh plate 71 on the basis of the ribbed steel mesh hollow box body 4, so that the steel mesh hollow is impervious, transitional leakage during concrete pouring is avoided, reinforcing ribs 73 are welded on the outer wall of the mesh plate 71 to reinforce the whole mesh plate 71, the structural strength is improved, and the structure is more stable;

meanwhile, the ribbed steel bar hollow net box body is low in production cost, simple to assemble and strong in bearing capacity, the working efficiency of constructors is greatly improved, and the construction period is shortened.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims (10)

1. The utility model provides a hollow superstructure structure of I shape cross-section of ribbed steel mesh fretwork casting concrete, its characterized in that includes:

the steel bar reinforced concrete structure comprises a bottom template, a vertical frame, vertical steel bars, ribbed beam steel bars, upper flange plate steel bars, lower flange plate steel bars, concrete and steel bar bodies;

the bottom formwork is provided with a plurality of vertical frames on the surface, vertical reinforcing steel bars are fixedly connected among the vertical frames to form a rectangular module, bottom flange plate reinforcing steel bars are arranged at the bottom end inside the rectangular module, ribbed beam reinforcing steel bars are fixedly bound on the top surfaces of the bottom flange plate reinforcing steel bars, and the rectangular module is divided into a plurality of unit grids by the ribbed beam reinforcing steel bars in a criss-cross mode;

be provided with the reinforcing bar body in the unit net, just reinforcing bar body lateral wall and close rib roof beam reinforcing bar lateral wall ligature are connected, reinforcing bar body top and last flange face reinforcing bar fixed connection, it has the concrete to fill between inside and the ribbed steel mesh fretwork box outer wall of unit net.

2. The hollow floor structure with the ribbed steel mesh hollow cast-in-place concrete I-shaped section according to claim 1, wherein the ribbed beam steel bars comprise a beam bottom longitudinal bar, a rib beam top longitudinal bar and rib beam stirrups, two ends of the rib beam top longitudinal bar are perpendicularly crossed and bound with the mutually parallel erection steel bars, the beam bottom longitudinal bar is arranged below the rib beam top longitudinal bar, the beam bottom longitudinal bar is bound and connected with the lower flange plate steel bars, and rib beam stirrups are fixedly bound on the outer walls of the rib beam top longitudinal bar and the beam bottom longitudinal bar.

3. The hollow floor structure with the ribbed steel mesh hollow-cast-in-place concrete I-shaped section as claimed in claim 1, wherein the reinforcement body comprises a hollow steel mesh box body with the ribs, a net-shaped plate, a connecting plate and reinforcing ribs, the net-shaped plate is fixedly connected to the outer wall of the hollow steel mesh box body with the ribs through the connecting plate, and the reinforcing ribs are welded to the outer wall of the net-shaped plate.

4. The hollow floor structure with the rib steel mesh and cast-in-place concrete I-shaped section as claimed in claim 3, wherein the hollow box body with the rib steel mesh comprises hollow meshes, hollow meshes and support steel frames, the hollow meshes are fixedly connected to the peripheral outer walls of the support steel frames, and two sets of the hollow meshes are respectively and fixedly connected to two ends of the hollow meshes.

5. The hollow floor structure with the ribbed steel mesh hollow cast-in-place concrete I-shaped section according to claim 4, wherein the joints of the two ends of the hollow mesh and the hollow mesh are fixedly provided with steel plate shaping edges.

6. The hollow floor structure with the ribbed steel mesh hollow cast-in-place concrete I-shaped section as claimed in claim 4, wherein the hollow meshes, the first hollow mesh and the second hollow mesh are all made of steel mesh bodies, and the mesh number of the expanded meshes of the steel mesh bodies is 3-5 meshes.

7. The hollow floor structure with the ribbed steel mesh hollow cast-in-place concrete I-shaped section according to claim 5, wherein the height of the support steel bar frame is consistent with the height of the hollow mesh, the support steel bar frame comprises a first steel bar and a second steel bar, the first steel bar is in a U-shaped structure, the second steel bar is welded on the inner wall of the first steel bar, the sections of the second steel bar and the first steel bar are perpendicular to each other, the diameters of the first steel bar and the second steel bar are both between 3mm and 5mm, the length of the second steel bar is between 600mm and 800mm, the distance between every two adjacent steel bars is between 100mm and 110mm, and the number of the first steel bars is between 5 and 7.

8. The hollow floor structure with the ribbed steel mesh hollow cast-in-place concrete I-shaped section according to claim 2, wherein the reinforcement body is of a cuboid structure, the direction perpendicular to the bottom formwork is taken as the height direction, the ratio of the height of the unit grids to the height of the reinforcement body is 5: 3-5: 4.5, and the distance between the periphery of the reinforcement body and the rib beam stirrups is 15-25 mm.

9. The hollow floor structure with the ribbed steel mesh and the cast-in-situ concrete and the I-shaped section according to claim 2, wherein the diameter of the reinforcing steel bars of the upper flange plate face is 10mm, the arrangement distance is 145mm to 155mm, the diameter of the reinforcing steel bars of the rib beam stirrups is 6mm, and the arrangement distance is 195mm to 205 mm.

10. The hollow floor structure with the ribbed steel mesh hollow cast-in-place concrete and the I-shaped section according to claim 1, wherein the aggregate diameter of the concrete is between 5 and 20mm, and the maximum particle diameter is between 30 and 31.5 mm.

Images