CN107023078B - Assembled cast-in-situ combined type superposed box net beam floor and construction method - Google Patents
Assembled cast-in-situ combined type superposed box net beam floor and construction method Download PDFInfo
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- CN107023078B CN107023078B CN201710173692.3A CN201710173692A CN107023078B CN 107023078 B CN107023078 B CN 107023078B CN 201710173692 A CN201710173692 A CN 201710173692A CN 107023078 B CN107023078 B CN 107023078B
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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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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Abstract
The invention relates to an assembled cast-in-situ combined type laminated box net beam floor which mainly comprises a laminated box, a rib beam, a pull rod, a bolt rod, a shear groove, a rib beam precast slab, a bonding prestressed tendon, a rib column, a hanging tendon and the like. The side plates, the bottom plates and the top plates of the laminated box are assembled in the field and then hoisted during the construction of the assembled cast-in-place combined type laminated box net beam floor, the rib beam is provided with the prefabricated bottom plates and the top sealing plates which penetrate through a plurality of box bodies, the bonding prestressed tendons are arranged in the rib beam, the integral strength of the rib beam is ensured, and the whole construction process is simple to operate, so that the construction and management are convenient, and the invention has better economic and technical benefits.
Description
Technical Field
The invention relates to a combined type laminated box net beam floor, in particular to an assembled cast-in-place combined type laminated box net beam floor, and belongs to the field of building construction.
Background
With the improvement of the demand of people for large space, the net beam floor structure can realize large span and large space, the beam plate height is the same, the non-prestressed form can reach 33m span, the construction matching template is flat and simple, the construction is saved, the box body monomer is light in weight, convenient to transport and assemble, the construction process is simple, the construction period is shortened, the earthquake force generated by light weight and high bearing capacity can be selected to form the beam plate combined section, the earthquake force generated by light weight is smaller, the earthquake resistance performance is good, the integral rigidity is very large, the deflection deformation and the corner deformation are very small, the torsion action on the floor side beam is much smaller than that of the common floor, the buildings with large span and large space are more and more in the market, the library, the underground garage, the teaching building, the office building, the sports training house and the like at present, the traditional cast-in-place reinforced concrete floor can not meet the demand, as a novel structure, the combined superposed box cast-in-place net beam floor structure has the advantages of smooth and simple construction matched templates, saving, light weight of box body single bodies, convenience in transportation and combined installation, simple construction process and the like.
But the connectivity between the adjacent coincide case lateral wall of traditional construction mode is not very strong, leads to the emergence of piece seam department seepage easily. Meanwhile, the side wall of the laminated box is deformed and damaged when the rib beam is poured, so that waste of materials and labor is caused.
In view of the above, in order to overcome the defects in the prior art, the invention provides a simple and effective assembled cast-in-place combined type laminated box girder floor system and a construction method thereof, which are needed to improve the construction quality and the construction efficiency of the assembled cast-in-place combined type laminated box girder floor system.
Disclosure of Invention
The invention aims to solve the technical problems that the connection integrity between the side walls of adjacent superposed boxes is not strong and the like in the traditional construction mode of assembling the cast-in-situ combined type superposed box girder floor system, and improve the construction quality and the construction efficiency of assembling the cast-in-situ combined type superposed box girder floor system.
In order to achieve the purpose, the invention adopts the following technical scheme:
assembling a cast-in-situ combined type superposed box net beam floor system, which comprises a superposed box, a rib beam, a pull rod, a bolt rod, a shear groove, a rib beam prefabricated bottom plate, a rib beam prefabricated top sealing plate, a bonding prestressed tendon, a rib column, a hanging tendon and an occlusion groove; the bottom plate and the side plate of the folding box are connected by adopting a bolt rod, and the upper part of the side plate is provided with a straight thread sleeve which is connected with the top plate by adopting the bolt rod; the rib beam lower part is equipped with rib beam prefabricated bottom plate, and upper portion is equipped with rib beam prefabricated top shrouding, and inside is equipped with bonding prestressing tendons, is equipped with the hanging bar on the rib beam prefabricated bottom plate, is equipped with the grout hole on the rib beam prefabricated top shrouding.
Concrete bulges are arranged at two ends of the bottom plate of the folding box, bolt holes are arranged in the bulges, a bottom plate groove is arranged in the middle of the bottom plate, rib columns are arranged in the bottom plate groove, bolt holes are arranged at the bottom of the side plate, and the bottom plate is connected with the side plate through the bolts; the curb plate top is equipped with pre-buried straight thread sleeve, and the roof is equipped with shear force groove and exposed bar shear force groove, and the roof both ends are equipped with the concrete arch, and protruding inside is equipped with the peg hole, sets up the rib post in the shear force groove, and the roof passes through the peg with the curb plate to be connected.
The bottom of each rib column is arranged in the groove of the bottom plate, the top of each rib column is arranged in the shear groove, the middle of each rib column is symmetrically provided with a plurality of straight thread sleeves, and the straight thread sleeves are provided with pull rods.
One end of the pull rod is a conical end mantle fiber, the conical end is arranged on the side plate, and the other end is arranged on the straight thread sleeve.
The outer sides of the ribbed beam prefabricated bottom plate and the ribbed beam prefabricated top sealing plate are provided with occlusion grooves which are occluded and connected with shear teeth of the superposed box, hanging ribs are arranged on the bottom plate and are two short hanging ribs and one long hanging rib, the short hanging ribs are arranged on a stress rib at the bottom of the superposed box, and the long hanging ribs are arranged on a stress rib at the top of the superposed box.
Two bonding prestressed tendons are arranged inside the rib beam.
The rib beam prefabricated bottom plate and the rib beam prefabricated top sealing plate connect 2 or 3 longitudinal and transverse superposed boxes into a whole, and reinforcing steel bars at junctions of the rib beam prefabricated bottom plate, the rib beam prefabricated top sealing plate, the longitudinal plate and the transverse plate are exposed and cast after construction.
Concrete is poured on the upper portion of the stacking box, and upper reinforcing steel bars are placed in the exposed reinforcing steel bar shear grooves in the top plate.
A construction method for assembling a cast-in-place combined type laminated box girder floor system comprises the following steps:
1) manufacturing a superposition box: manufacturing a bottom plate, a top plate and side plates of the laminated box in a factory according to a design drawing;
2) installing a superposition box: assembling the folding box on site, placing the bottom plate on a flat ground, connecting the side plate with the bottom plate by using a bolt rod, then placing a rib column, screwing a pull rod on the periphery of the rib column for fixing, finally covering a top plate, and connecting the top plate with the side plate by using the bolt rod;
3) placing the rib beam prefabricated bottom plate: accurately placing the rib beam prefabricated bottom plate according to the paying-off, and exposing the steel bars at the junction of the longitudinal plate and the transverse plate;
4) hoisting the superposed box: hoisting the superposed box to a preset position by adopting a tower crane;
5) the superposed box is connected with the ribbed beam prefabricated bottom plate: checking the positions of the superposed box and the ribbed beam prefabricated bottom plate, enabling the shear teeth of the superposed box to be occluded and fixed with the occlusion groove of the ribbed beam prefabricated bottom plate, and bending the hanging ribs to enable the hanging ribs to be connected with the stressed ribs of the superposed box in a hanging manner;
6) setting a bonding prestressed tendon: after the rib beam steel bars are bound, arranging bonding prestressed bars in the middle of the rib beam at intervals of 1-2 meters;
7) placing a rib beam prefabricated top sealing plate: placing the ribbed beam prefabricated top sealing plate according to a drawing, wherein an occlusion groove of the ribbed beam prefabricated top sealing plate is occluded and connected with the shear teeth of the superposed box;
8) pouring concrete: and grouting and vibrating concrete into the rib beam through grouting holes in the rib beam prefabricated top sealing plate.
The invention has the following characteristics and beneficial effects:
(1) the side plates, the top plate and the bottom plate of the laminated box are assembled and then hoisted in place on a construction site, and the construction mode is simplified.
(2) The curb plate and bottom plate, the roof of coincide case all are connected with the tie rod, prevent to leak thick liquid, and inside sets up rib post and pull rod, prevents that concrete placement in-process coincide case from taking place to warp.
(3) The superposed box and the rib beam are connected by adopting the hanging ribs of the rib beam prefabricated bottom plate, and the rib beam is provided with a rib beam prefabricated top plate, so that the strength and the stability of the rib beam are ensured.
Drawings
FIG. 1 is a schematic view of the assembled cast-in-place composite type laminated box girder floor system of the present invention;
FIG. 2 is a schematic view of a modular folding box;
FIG. 3 is a perspective view of a modular folding box;
FIG. 4 is a schematic view of a connection structure of the rib beam prefabricated top plate;
wherein: 1. the laminated box comprises a laminated box 2, a top plate 3, a bottom plate 4, side plates 5, a bolt rod 6, a straight thread sleeve 7, a pull rod 8, a rib column 9, a shear groove 10, a stress rib 11, a shear tooth 12, a bottom plate groove 13, a rib exposed shear groove 14, a rib beam 15, a rib beam prefabricated bottom plate 16, a bonded prestressed rib 17, a hanging rib 18, a rib beam prefabricated top sealing plate 19, a grouting hole 20, a rib beam prefabricated plate main rib 21, an engagement groove 22, a transverse plate 23 and a longitudinal plate.
Detailed Description
The invention does not need to be described repeatedly, and focuses on explaining the structure implementation mode of the invention.
Fig. 1 is a schematic structural view of an assembled cast-in-place combined type superposed box mesh beam floor and a construction method, the assembled cast-in-place combined type superposed box mesh beam floor is 80mm thick at an exposed box bottom plate, 120mm thick at an exposed box top plate, 10mm thick at a superposed box side wall and 450mm high at a superposed box. The width of a rib beam is 100mm, a pull rod is an iron rod with a conical bottom, the diameter of the conical bottom is 50mm, the diameter of the rod is 10mm, the diameter of a bolt rod is 5mm, the diameter of the bolt rod is matched with a 6mm inner diameter screw cap, the depth of a shear groove is 30mm, the width of a square is 55mm, the thickness of a rib beam prefabricated bottom plate is 10mm, the thickness of a rib beam prefabricated top sealing plate is 10mm, the lengths of the rib beam prefabricated bottom plate and the rib beam prefabricated top sealing plate are respectively the width of three superposed boxes, the diameter of a bonding prestressed tendon is 18mm, a rib column is a wooden square rod, the; the groove depth of the exposed shear groove is 20mm, the edge width is 50mm, the bottom plate is provided with a bottom plate groove 30mm, the square width is 50mm, and the prefabricated top sealing plate of the rib beam is provided with a grouting hole with the diameter of 60 mm.
The outer sides of the ribbed beam prefabricated bottom plate and the ribbed beam prefabricated top sealing plate are provided with an engagement groove which is engaged and connected with shear teeth of the laminated box, the bottom plate is provided with a hanging rib with the diameter of 18mm, the hanging rib is 2 short hanging ribs with the length of 300mm and one long hanging rib with the length of 600mm, the short hanging ribs are arranged on the stress rib at the bottom of the laminated box with the diameter of 28mm, and the long hanging ribs are arranged on the stress rib at the top of the laminated box.
FIG. 2 is a schematic view of a combined type folding box, FIG. 3 is a perspective view of the combined type folding box, concrete bulges are arranged at two ends of a bottom plate of the folding box shown in FIGS. 2-3, the height of each bulge is 15mm, a bolt hole is arranged inside each bulge, the diameter of each bulge is 6mm, the middle part of the bottom plate is provided with a bottom plate groove depth of 20mm, the side width of each bottom plate is 52mm, rib columns are arranged in the grooves, each rib column is a wood square rod, the side width of each rib column is 50mm, the bottom of each side plate is provided with a bolt hole, the diameter of each; curb plate top is equipped with pre-buried straight thread sleeve, and internal diameter 6mm, roof are equipped with shear force groove and exposed bar shear force groove, and the shear force groove depth is 30mm, square width 55mm, exposed bar shear force groove depth 20mm, and the limit is wide 50mm, and exposed bar shear force inslot can establish the post-cast layer reinforcing bar, and the roof both ends are equipped with the concrete arch, and protruding inside is equipped with the bolt hole, and the shear force inslot sets up the rib post, and the roof passes through the bolt with the curb plate and is connected. The bottom of each rib column is arranged in a groove of the bottom plate, the top of each rib column is arranged in a shear groove of the top plate, 4 straight thread sleeves with the diameter of 12mm are symmetrically arranged in the middle of each rib column, and a pull rod with the diameter of 10mm is arranged on each straight thread sleeve.
Fig. 4 is a schematic view of a connection structure of the rib beam prefabricated top plate, wherein 3 longitudinal and transverse superposed boxes are connected into a whole by the rib beam prefabricated bottom plate and the rib beam prefabricated top sealing plate shown in fig. 4, reinforcing steel bars at junctions of longitudinal plates and transverse plates of the rib beam prefabricated bottom plate and the rib beam prefabricated top sealing plate are exposed, and post-pouring is performed during construction.
The invention also provides a construction method for assembling the cast-in-place combined type superposed box girder floor system, which comprises the following steps:
1) manufacturing a folding box 1: the bottom plate 3, the top plate 2 and the side plates 4 of the laminated box 1 are manufactured in a factory according to a design drawing.
2) The installation of the folding box 1: on-the-spot equipment box 1 that folds, bottom plate 3 is arranged in on the flat ground, adopts the tie rod 5 to be connected curb plate 4 and bottom plate 4, places rib post 8 afterwards, and it is fixed all around to twist pull rod 7 around rib post 8, covers roof 2 at last, adopts tie rod 5 to be connected roof 2 and curb plate 4.
3) Placing the rib beam prefabricated bottom plate 15: and (3) accurately placing the rib beam prefabricated bottom plate 15 according to the paying-off, and exposing the steel bars at the junction of the longitudinal plate 23 and the transverse plate 22.
4) Hoisting the folding box 1: and hoisting the superposed box 1 to a preset position by adopting a tower crane.
5) The superposed box 1 is connected with the rib beam prefabricated bottom plate 15: checking the positions of the superposed box 1 and the ribbed beam prefabricated bottom plate 15, enabling the shear teeth 11 of the superposed box to be occluded and fixed with the occlusion grooves 21 of the ribbed beam prefabricated bottom plate 15, and bending the hanging ribs 17 to enable the hanging ribs to be connected with the stress ribs 10 of the superposed box 1 in a hanging manner.
6) Setting the bonding prestressed tendons 16: after the steel bars of the rib beam 14 are bound, the bonded prestressed tendons 16 are arranged in the middle of the rib beam 14 at intervals of 1-2 m.
7) Placing the rib beam prefabricated top sealing plate 18: the prefabricated top sealing plate 18 is placed according to the drawing, and the meshing groove 21 of the top sealing plate is meshed and connected with the shearing teeth 11 of the laminated box 1.
8) Pouring concrete: and grouting and vibrating concrete into the rib beam 14 through a grouting hole 19 on the prefabricated top sealing plate 18.
Claims (4)
1. An assembled cast-in-place combined type laminated box net beam floor system is characterized by comprising a laminated box (1), a rib beam (14), a pull rod (7), a bolt rod (5), a shear groove (9), a rib beam prefabricated bottom plate (15), a rib beam prefabricated top sealing plate (18), a bonding prestressed rib (16), a rib column (8), a hanging rib (17) and an occlusion groove (21); a bottom plate (3) of the folding box (1) is connected with a side plate (4) through a bolt rod (5), and a straight thread sleeve (6) is arranged at the upper part of the side plate (4) and is connected with a top plate (2) through the bolt rod (5); the lower part of the rib beam (14) is provided with a rib beam prefabricated bottom plate (15), the upper part of the rib beam prefabricated top sealing plate (18) is provided with a bonding prestressed rib (16), the rib beam prefabricated bottom plate (15) is provided with a hanging rib (17), and the rib beam prefabricated top sealing plate (18) is provided with a grouting hole (19); concrete bulges are arranged at two ends of a bottom plate (3) of the folding box (1), bolt rod holes are arranged in the bulges, a bottom plate groove (12) is arranged in the middle of the bottom plate (3), rib columns (8) are arranged in the bottom plate groove (12), bolt rod holes are arranged at the bottom of the side plate (4), and the bottom plate (3) is connected with the side plate (4) through bolt rods (5); the top of the side plate (4) is provided with a pre-buried straight thread sleeve (6), the top plate (2) is provided with a shear groove (9) and a bar exposing shear groove (13), two ends of the top plate (2) are provided with concrete bulges, bolt holes are formed in the bulges, rib columns (8) are arranged in the shear groove (9), and the top plate (2) is connected with the side plate (4) through bolts (5); the bottom of each rib column (8) is arranged in a bottom plate groove (12), the top of each rib column is arranged in a shear groove (9), a plurality of straight thread sleeves (6) are symmetrically arranged in the middle of each rib column, and pull rods (7) are arranged on the straight thread sleeves (6); one end of the pull rod (7) is a conical end, a mantle fiber is arranged at one end, the conical end is arranged on the side plate (4), and the other end is arranged on the straight thread sleeve (6); an occlusion groove (21) is arranged on the outer sides of a rib beam prefabricated bottom plate (15) and a rib beam prefabricated top sealing plate (18) and is in occlusion connection with shear teeth (11) of the superposed box, a hanging rib (17) is arranged on the rib beam prefabricated bottom plate (15), the hanging rib (17) is two short hanging ribs and one long hanging rib, the short hanging ribs are arranged on a stress rib (10) at the bottom of the superposed box (1), and the long hanging rib is arranged on the stress rib (10) at the top of the superposed box (1); concrete is poured on the upper portion of the stacking box (1), and upper reinforcing steel bars are placed in the exposed reinforcing steel bar shear grooves (13) in the top plate (2).
2. The assembled cast-in-place combined type laminated box girder floor system as claimed in claim 1, wherein: two bonding prestressed tendons (16) are arranged in the rib beam (14).
3. The assembled cast-in-place combined type laminated box girder floor system as claimed in claim 1, wherein: the rib beam prefabricated bottom plate (15) and the rib beam prefabricated top sealing plate (18) connect 2 or 3 longitudinal and transverse superposed boxes (1) into a whole, and reinforcing steel bars at junctions of the rib beam prefabricated bottom plate (15) and the longitudinal plate (23) and the transverse plate (22) of the rib beam prefabricated top sealing plate (18) are exposed and cast after construction.
4. A construction method for assembling a cast-in-place combined type laminated box girder floor system according to claim 1, characterized by comprising the steps of:
1) manufacturing a folding box (1): manufacturing a bottom plate (3), a top plate (2) and side plates (4) of the laminated box (1) in a factory according to a design drawing;
2) the stacking box (1) is installed: assembling a folding box (1) on site, placing a bottom plate (3) on a flat ground, connecting a side plate (4) with the bottom plate (3) by using a bolt rod (5), then placing a rib column (8), screwing a pull rod (7) on the periphery of the rib column (8) for fixing, finally covering a top plate (2), and connecting the top plate (2) with the side plate (4) by using the bolt rod (5);
3) placing the rib beam prefabricated bottom plate (15): accurately placing the rib beam prefabricated bottom plate (15) according to the paying-off, and exposing the steel bars at the junction of the longitudinal plate (23) and the transverse plate (22);
4) hoisting the folding box (1): hoisting the laminated box (1) to a preset position by adopting a tower crane;
5) the superposed box (1) is connected with the ribbed beam prefabricated bottom plate (15): checking the positions of the superposed box (1) and the ribbed beam prefabricated bottom plate (15), enabling the shear teeth (11) of the superposed box to be occluded and fixed with the occlusion grooves (21) of the ribbed beam prefabricated bottom plate (15), and bending the hanging ribs (17) to enable the hanging ribs (17) to be connected with the stress ribs (10) of the superposed box (1) in a hanging manner;
6) setting a bonding prestressed tendon (16): after the steel bars of the rib beam (14) are bound, arranging bonding prestressed tendons (16) in the middle of the rib beam (14) at intervals of 1-2 meters;
7) placing a rib beam prefabricated top sealing plate (18): placing the rib beam prefabricated top sealing plate (18) according to a drawing, wherein an occlusion groove (21) of the rib beam prefabricated top sealing plate (18) is occluded and connected with the shear teeth (11) of the folding box (1);
8) pouring concrete: and grouting and vibrating concrete into the rib beam (14) through grouting holes (19) on the rib beam prefabricated top sealing plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173692.3A CN107023078B (en) | 2017-03-22 | 2017-03-22 | Assembled cast-in-situ combined type superposed box net beam floor and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173692.3A CN107023078B (en) | 2017-03-22 | 2017-03-22 | Assembled cast-in-situ combined type superposed box net beam floor and construction method |
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| Publication Number | Publication Date |
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| CN107023078A CN107023078A (en) | 2017-08-08 |
| CN107023078B true CN107023078B (en) | 2020-01-03 |
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| CN201710173692.3A Active CN107023078B (en) | 2017-03-22 | 2017-03-22 | Assembled cast-in-situ combined type superposed box net beam floor and construction method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111576708A (en) * | 2020-04-23 | 2020-08-25 | 北京天源建筑工程有限责任公司 | Assembly box floor structure and construction process thereof |
| CN114718239B (en) * | 2021-07-19 | 2023-06-13 | 中铁建工集团有限公司 | Combined system floor system and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1773049A (en) * | 2004-11-12 | 2006-05-17 | 李克翔 | Concrete superimposed structural component box |
| CN1702252B (en) * | 2005-06-17 | 2010-04-14 | 李克翔 | Method for processing concrete mesh-beam floor system |
| CN201850687U (en) * | 2010-11-17 | 2011-06-01 | 山东鸿泰建设集团有限公司 | Ribbed cast-in-situ reinforced concrete floor slab box mold |
| CN203514593U (en) * | 2013-07-26 | 2014-04-02 | 王本淼 | Combined meshed box-shaped component for cast-in-place hollow floor pore forming |
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