CN2490246Y

CN2490246Y - Prestressed concrete floor with dense ribs

Info

Publication number: CN2490246Y
Application number: CN 01233175
Authority: CN
Inventors: 李佩勋; 吴转琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-10
Filing date: 2001-08-10
Publication date: 2002-05-08
Anticipated expiration: 2011-08-10

Abstract

The utility model discloses a construction concrete floor, in particular to a prestressed concrete floor with dense ribs. The utility model contains a crisscrossed steel bar frame, a netting steel bar and a floor body; wherein the floor body is made of concrete; each grid formed by the vertical steel bar frame and the laid steel bar frame has a hollow polyhedron which is made of light material and has a ribbon board inside; the bottom circumference of the polyhedron extends outward and forms an edge which is positioned below the steel bar frame; the polyhedron is used as the module shell of the ribbon and is integrated into one floor which has a plane upper surface and a plane lower surface, together with concrete; two or more ripple shape high intensity stress steel bars are arranged in the vertical steel bar frame and the laid steel bar frame; the wave crest of each ripple shape high intensity stress steel bar is positioned at the intersect of the vertical steel bar frame and the laid steel bar frame; and the two ends of the stress steel bar are anchored in the floor slab body. The utility model is light in weight, well in vibration resistance, strong in sound insulation, pollution free and well in split proof and deformation proof performance.

Description

Close rib prestressed concrete floor slab

Technical field

The utility model relates to a kind of concrete building plate that is used for building, refers to a kind of close rib prestressed concrete floor slab especially.

Background technology

At present, the concrete building plate that generally is used for building has three kinds of cast-in-situ reinforced concrete slab floors, cast-in-situ reinforced concrete ribbed slab floor, cast-in-place filling combined type ribbed slab floor.But above several structural shape all exists certain deficiency in engineering is used.1, cast-in-situ reinforced concrete slab floor: the cast-in-situ reinforced concrete slab floor is with concrete closely knit building in being furnished with the template of cage of reinforcement, so dead load is big, earthquake is had strong complaints, and causes building to form the fat post broad base of slab jowar structure.2, cast-in-situ reinforced concrete ribbed slab floor: it is a kind of on cast-in-situ reinforced concrete slab floor basis, through rationally calculating in the grid that intercostal forms, reduces the concrete thickness of slab, reaches the purpose that alleviates deadweight.Although this template has alleviated dead load, the formwork template construction cycle of adopting in the construction is long, simultaneously owing to attenuate slab thickness, sound isolation of floor, heat insulation physical property are seriously reduced.And the riblet that underfloor gathers makes the necessary furred ceiling in its underpart, can't use in the normal domestic dwelling house.3, cast-in-place filling combined type ribbed slab floor: it is partial stowage's solid light building materials floor, it is to deduct in the concrete cavity at cast-in-situ reinforced concrete ribbed slab floor intercostal, use than the solid building materials filling of concrete from heavy and light, though this floor has overcome the part deficiency of cast-in-situ reinforced concrete slab floor and cast-in-situ reinforced concrete ribbed slab floor, be not connected but have between the solid light building materials of filling and the concrete agent structure, stand because under the distortion and geological process that variations in temperature causes at concrete building plate, be easy to generate the cracking and fall, discreteness is big.Though this floor all has improvement to above deficiency, its packing material easily causes very big pollution to the job site, and making engineering use has very big difficulty.

Summary of the invention

The purpose of this utility model provides a kind of light weight, antidetonation is good, sound insulation is strong, pollution-free, close rib prestressed concrete floor slab that the cracking resistance deformation performance is good.

For achieving the above object, the utility model is taked following design scheme: a kind of close rib prestressed concrete floor slab, it comprises crisscross cage of reinforcement, be positioned at the net sheet reinforcing bar of cage of reinforcement top and the floor body that concrete is formed, described cage of reinforcement and concrete form girt strip, it is characterized in that: in each space that forms by longitudinal reinforcement skeleton and transverse reinforcement skeleton, be provided with the hollow polyhedral that there is floor an inside of being made by light material, described polyhedron bottom periphery is outward extended with the edge, described edge is positioned at described cage of reinforcement below, described polyhedron not only as the formwork of girt strip but also with concrete be combined as a whole constitute on, soffit is the floor on plane, in each described longitudinal reinforcement skeleton and transverse reinforcement skeleton, be respectively arranged with at least two and be undulatory high-strength prestress reinforcing bar, the crest of each described corrugated prestressed reinforcement is positioned at described transverse reinforcement skeleton and longitudinal reinforcement skeleton intersection, and the two ends of each described prestressed reinforcement are anchored in the described floor body.

Described polyhedron external surface is the burr shape.

Described prestressed reinforcement is a no-cohesive prestressed reinforcement.

The distance of the crest of described corrugated prestressed reinforcement and described floor body end face is at least 25mm, and the distance of the wave base of described corrugated prestressed reinforcement and described floor body bottom surface is at least 25mm.

The utility model has the advantages that: 1, the utility model has the floor bottom that the hollow polyhedral at edge is arranged owing to comprise an inside of being made by light material, polyhedron not only as the formwork of girt strip but also with concrete be combined as a whole constitute on, soffit is the floor on plane, hollow polyhedral instead of part concrete, thereby the concrete of floor and the consumption of reinforcing bar have been reduced, alleviated the weight of floor, whole building obviously reduced the reflection of earthquake, strengthened the anti-seismic performance of building, and reduced the cost on beam column and basis effectively, only need the bed die supporting during construction, its girt strip and concrete plate all with hollow polyhedral as internal mold, make the construction simple and convenient.2, the utility model is undulatory high-strength prestress reinforcing bar owing to be provided with at least two in each cage of reinforcement, the crest of each corrugated prestressed reinforcement is positioned at transverse reinforcement skeleton and longitudinal reinforcement skeleton intersection, the two ends of prestressed reinforcement are anchored in the floor body, thereby reduced the thickness of floor, increase structure and used headroom, and pollution-free, effectively improved dwelling environment.3, the utility model constituted the floor that upper and lower surface is the plane because its polyhedron of being made by light material not only has been combined as a whole as the formwork of girt strip but also with concrete, simple and direct attractive in appearance, can be widely used among the civilian construction, simultaneously also make the utility model that defening effect is preferably arranged, help environmental protection.4, the utility model is because its polyhedron external surface is the burr shape, so combining between polyhedron and the concrete is more firm.

Description of drawings

Fig. 1 is a structure construction schematic diagram of the present utility model

Fig. 2 is the 1-1 schematic cross-section among Fig. 1

Fig. 3 is the 2-2 schematic cross-section among Fig. 1

Fig. 4 looks schematic diagram for polyhedron master in the utility model

Fig. 5 is an A-A schematic cross-section among Fig. 4

The specific embodiment

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a kind of close rib prestressed concrete floor slab of the utility model, it comprises crisscross cage of reinforcement 1, be positioned at the net sheet reinforcing bar 2 of cage of reinforcement 1 top and the floor body that concrete 17 is formed, cage of reinforcement 1 and concrete 17 form girt strip 3, it is characterized in that: in each space 6 that forms by longitudinal reinforcement skeleton 4 and transverse reinforcement skeleton 5, be provided with the hollow polyhedral 8 that there is floor 7 inside of being made by light material, polyhedron 8 bottoms 9 peripheries are outward extended with edge 10, edge 10 is positioned at cage of reinforcement 1 below, polyhedron 8 not only as the formwork of girt strip 3 but also with concrete be combined as a whole constitute on, soffit is the floor on plane, in each longitudinal reinforcement skeleton 4 and transverse reinforcement skeleton 5, be respectively arranged with at least two and be undulatory high-strength prestress reinforcing bar 11, the crest 12 of each corrugated prestressed reinforcement 11 is positioned at transverse reinforcement skeleton 5 and longitudinal reinforcement skeleton 4 intersections, and the two ends of each prestressed reinforcement 11 are anchored in the floor body.

Polyhedron 8 external surfaces are the burr shape.

Prestressed reinforcement 11 is a no-cohesive prestressed reinforcement.

The crest 12 of corrugated prestressed reinforcement 11 is at least 25mm with the distance of floor body end face 13, and the wave base 14 of corrugated prestressed reinforcement 11 is at least 25mm with the distance of floor body bottom surface 15.

The utility model may further comprise the steps when making:

1, support shuttering 16, tie up plain bars skeleton 1 above template 16, and cage of reinforcement 1 comprises longitudinal reinforcement skeleton 4 and transverse reinforcement skeleton 5.

2, in each longitudinal reinforcement skeleton 4 and transverse reinforcement skeleton 5, be respectively arranged with at least two and be undulatory high-strength prestress reinforcing bar 11, the crest 12 of each corrugated prestressed reinforcement 11 is positioned at transverse reinforcement skeleton 5 and longitudinal reinforcement skeleton 4 intersections, being provided with an inside of being made by light material in each space 6 that is formed by longitudinal reinforcement skeleton 4 and transverse reinforcement skeleton 5 has the hollow polyhedral 8 of floor 7, polyhedron 8 bottoms 9 peripheries are outward extended with edge 10, edge 10 is positioned at cage of reinforcement 1 below, polyhedron 8 external surfaces are the burr shape, polyhedron 8 is as the formwork of girt strip 3, net sheet reinforcing bar 2 is set above plain bars skeleton 1 again, thereby forms the template of floor body.

3, in the template of mounted floor body, pour concrete according to a conventional method, when concrete reached 80% design strength, prestressed reinforcement of tensioning 11 was anchored at the two ends of prestressed reinforcement 11 in the floor body afterwards again.8 of polyhedrons are combined as a whole with concrete 17 and constitute the floor that upper and lower surface is the plane.

Claims

1, a kind of close rib prestressed concrete floor slab, it comprises crisscross cage of reinforcement, be positioned at the net sheet reinforcing bar of cage of reinforcement top and the floor body that concrete is formed, described cage of reinforcement and concrete form girt strip, it is characterized in that: in each space that forms by longitudinal reinforcement skeleton and transverse reinforcement skeleton, be provided with the hollow polyhedral that there is floor an inside of being made by light material, described polyhedron bottom periphery is outward extended with the edge, described edge is positioned at described cage of reinforcement below, described polyhedron not only as the formwork of girt strip but also with concrete be combined as a whole constitute on, soffit is the floor on plane, in each described longitudinal reinforcement skeleton and transverse reinforcement skeleton, be respectively arranged with at least two and be undulatory high-strength prestress reinforcing bar, the crest of each described corrugated prestressed reinforcement is positioned at described transverse reinforcement skeleton and longitudinal reinforcement skeleton intersection, and the two ends of each described prestressed reinforcement are anchored in the described floor body.

2, close rib prestressed concrete floor slab according to claim 1, it is characterized in that: described polyhedron external surface is the burr shape.

3, close rib prestressed concrete floor slab according to claim 1 and 2, it is characterized in that: described prestressed reinforcement is a no-cohesive prestressed reinforcement.

4, close rib prestressed concrete floor slab according to claim 1 and 2, it is characterized in that: the distance of the crest of described corrugated prestressed reinforcement and described floor body end face is at least 25mm, and the distance of the wave base of described corrugated prestressed reinforcement and described floor body bottom surface is at least 25mm.

5, close rib prestressed concrete floor slab according to claim 3, it is characterized in that: the distance of the crest of described corrugated prestressed reinforcement and described floor body end face is at least 25mm, and the distance of the wave base of described corrugated prestressed reinforcement and described floor body bottom surface is at least 25mm.