CN201013040Y

CN201013040Y - Steel bar truss prestressed concrete superimposed sheet

Info

Publication number: CN201013040Y
Application number: CNU2007201072981U
Authority: CN
Inventors: 李文斌; 钱磊; 高长喜
Original assignee: Zhejiang Hangxiao Steel Structure Co Ltd
Current assignee: Hang Xiao Gang Gou limited company
Priority date: 2007-03-15
Filing date: 2007-03-15
Publication date: 2008-01-30
Anticipated expiration: 2017-03-15

Abstract

A longitudinal stress reinforcement of a laminate is rationally laid out. Pre-stressed concrete laminate of a truss of reinforced concrete with full anti-cracking ability includes a prefabricated layer (1), a laminated layer (2) above the prefabricated layer (1), the truss of reinforced concrete arranged between the prefabricated layer and the laminated layer, which consists of a lower-chord reinforcement (3), an upper-chord reinforcement (5) and a web member. The lower-chord reinforcement (3) is arranged below the prefabricated layer (1). The upper-chord reinforcement (5) is arranged in the laminated layer (2). A lower part of the laminated layer is provided with a steel reinforcement in another direction (4) inter-distributing with the lower-chord reinforcement. The laminated layer is provided with an additional reinforcement inter-distributing with the lower-chord reinforcement in the same plane, forming a network structure. The lower part of the prefabricated layer is provided with a pre-stressed steel reinforcement (8) running parallel to the lower-chord reinforcement. The lower-chord reinforcement (3), the pre-stressed steel reinforcement and the steel reinforcement in another direction (4) in the same plane form a network structure. The utility model fits to be used as a floor.

Description

Prestressed Concrete Superimposed Sheet Of Steel Bar Truss

Technical field

The utility model relates to the floor in a kind of building structure, especially a kind of superimposed sheet.

Background technology

It is several that the type of floor mainly contains precast plate, cast-in-place plate, superimposed sheet, Profiled Steel Sheet and Concrete Composite Floor etc. at present.Though wherein the precast plate speed of application is fast, the flooring integral rigidity is poor, and earthquake is serious, remains in antiseepage, anti-leakage problem, influences it and applies; Though cast-in-place plate integral rigidity is good, need carry out the form work engineering and the reinforced bar engineering of lengthy and tedious complexity, engineering cost height, long construction period; Though profiled sheet one concrete combined floor speed of application is fast, expense height, and soffit out-of-flatness often need furred ceiling to handle.The shortcoming that existing superimposed sheet exists is: 1, the superposed surfaces between preformed layer and the overlapping layers need be carried out the strictness processing; 2, suitable span is less; 3, reinforcing bar binding is loaded down with trivial details, influences construction speed.

The Truss-type Composite Plate of the applicant's No. 200420022036.1 Chinese utility model patents of ZL has overcome the defective of described existing superimposed sheet, but being the preformed layer bottom of this superimposed sheet, its weak point only have the reinforcing bar purlin lower edge muscle of longitudinal stress to reticulate structure to reinforcing bar in same planar shaped with another, make the reasonable Arrangement of longitudinal stress reinforcing bar produce certain difficulty, having to change the problem that the steel bar girder spacing causes the increase expense and prolongs the processing duration for reasonable Arrangement longitudinal stress reinforcing bar in some cases, and the crack resistance of superimposed sheet can not fully guarantee.

Summary of the invention

The utility model is solving too strictness of existing superimposed sheet superposed surfaces processing, it is little to be fit to span, reinforcing bar binding is loaded down with trivial details when influencing problems such as construction speed, solve the problem that superimposed sheet longitudinal stress reinforcement placement is reasonable inadequately and crack resistance can not fully guarantee, Prestressed Concrete Superimposed Sheet Of Steel Bar Truss of the present utility model is provided for this reason, this superimposed sheet longitudinal stress reinforcement placement is reasonable, and cracking resistance fully guarantees.

For addressing the above problem, the technical solution adopted in the utility model be provided with preformed layer and on overlapping layers and place described presheaf, in the overlapping layers by the lower edge muscle, the steel bar girder of muscle and the web member formation of winding up, the lower edge muscle is positioned at the preformed layer bottom, the muscle that winds up is arranged in overlapping layers, the preformed layer bottom is provided with the other direction reinforcing bar that is interspersed with the lower edge muscle, be provided with additional muscle in the overlapping layers and reticulate structure in same planar shaped with the muscle interlaced arrangement of winding up, its special character is: described preformed layer bottom is provided with the prestressed reinforcement parallel with the lower edge muscle, described lower edge muscle, prestressed reinforcement and other direction reinforcing bar reticulate structure in same planar shaped.

Steel bar girder described in the utility model can be triangular truss, snakelike truss or waveform truss.

Can in overlapping layers of the present utility model, be embedded with light filler piece or hollow section between described steel bar girder, to be fit to plate thickness when big.

Overlapping layers in the utility model is a layer of concrete.

The beneficial effect of the described Truss-type Composite Plate of the utility model Prestressed Concrete Superimposed Sheet Of Steel Bar Truss mainly shows:

1, the truss web reinforcing bar can bear the shearing on the superposed surfaces, makes preformed layer and overlapping layers that good co-operation performance be arranged, and does not need that superposed surfaces is carried out strictness and handles;

2, because steel bar girder itself has certain rigidity, adopt prestressed reinforcement that preformed layer rigidity is further improved simultaneously, promptly not can be used for constructing than large span floor so need not establish interim support;

3, wind up between muscle and the lower edge muscle and to connect,, reduce on-the-spot reinforcing bar binding workload, improve speed of application by the produce in factory steel bar girder by web member;

4, rebar spacing is arranged evenly, and concrete protective thickness is controlled easily.

5, adopt prestressed reinforcement, effectively improved the cracking resistance of plate.

Description of drawings

Fig. 1 is the utility model triangular truss formula superimposed sheet longitudinal plan;

Fig. 2 is the truss elevation of triangular truss formula superimposed sheet;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the drawing in side sectional elevation of embodiment 1 triangular truss formula superimposed sheet;

Fig. 5 is the drawing in side sectional elevation of embodiment 2 triangular truss formula superimposed sheets;

Fig. 6 is the drawing in side sectional elevation of embodiment 3 triangular truss formula superimposed sheets;

Fig. 7 is the snakelike Truss-type Composite Plate longitudinal plan of the utility model;

Fig. 8 is the truss elevation of snakelike Truss-type Composite Plate;

Fig. 9 is the A-A sectional view of Fig. 8;

Figure 10 is the drawing in side sectional elevation of embodiment 4 snakelike Truss-type Composite Plates;

Figure 11 is the utility model waveform Truss-type Composite Plate longitudinal plan;

Figure 12 is the truss elevation of waveform Truss-type Composite Plate;

Figure 13 is the A-A sectional view of Figure 12;

Figure 14 is the drawing in side sectional elevation of embodiment 5 waveform Truss-type Composite Plates.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment 1

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of Prestressed Concrete Superimposed Sheet Of Steel Bar Truss, be used for thickness of slab when thin, comprise preformed layer 1, overlapping layers 2, the bottom of preformed layer 1 is embedded with reinforcing bar, it is by lower edge muscle 3, prestressed reinforcement 8, other direction reinforcing bar 4 is formed, lower edge muscle 3 and prestressed reinforcement 8 form net structure with the interlaced at grade layout of other direction reinforcing bar 4, overlapping layers 2 is the cast-in-situ concrete layers that are positioned on the preformed layer, overlapping layers 2 tops are provided with the wind up muscle 5 parallel with lower edge muscle 3, wind up and be provided with web member 6 between muscle 5 and the lower edge muscle 3, web member 6 is affixed with the muscle 5 that winds up, web member 6 and affixed, the adjacent lower edge muscle 3 of lower edge muscle 3, muscle 5 and web member 6 formation triangular trusses wind up.Also be provided with additional muscle 7 on the overlapping layers 2, additional muscle 7 forms net structure with the muscle 5 that winds up in same plane interlaced arrangement.

Embodiment 2

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 5, this routine Prestressed Concrete Superimposed Sheet Of Steel Bar Truss is used for thickness of slab when thicker, and it is different from example 1 is to add light filler piece 9 in the overlapping layers between the triangular truss, and other structure is identical with example 1.

Embodiment 3

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 6, this routine Prestressed Concrete Superimposed Sheet Of Steel Bar Truss, it is different from example 1 is to add hollow section 9 in the overlapping layers between the triangular truss, other structure is identical with example 1.

Embodiment 4

With reference to Fig. 7, Fig. 8, Fig. 9, Figure 10, this routine Prestressed Concrete Superimposed Sheet Of Steel Bar Truss is used for thickness of slab when thin, and what be different from example 1 is adjacent lower edge muscle 3, wind up muscle 5 and web member 6 constitute snakelike truss, and other structure is identical with example 1.

Embodiment 5

With reference to Figure 11, Figure 12, Figure 13, Figure 14, this routine Prestressed Concrete Superimposed Sheet Of Steel Bar Truss is used for thickness of slab when thin, and it is different from example 1 is adjacent lower edge muscle 3, wind up muscle 5 and web member 6 constitute the waveform truss, and other structure is identical with example 1.

Claims

1. Prestressed Concrete Superimposed Sheet Of Steel Bar Truss, have preformed layer (1) and on overlapping layers (2) and place described presheaf, in the overlapping layers by lower edge muscle (3), the steel bar girder of muscle (5) and the web member formation of winding up, lower edge muscle (3) is positioned at preformed layer (1) bottom, the muscle (5) that winds up is arranged in overlapping layers (2), the preformed layer bottom is provided with the other direction reinforcing bar (4) that is interspersed with the lower edge muscle, be provided with additional muscle (7) in the overlapping layers and reticulate structure in same planar shaped with the muscle interlaced arrangement of winding up, it is characterized in that: described preformed layer bottom is provided with the prestressed reinforcement parallel with the lower edge muscle (8), described lower edge muscle (3), prestressed reinforcement (8) and other direction reinforcing bar (4) reticulate structure in same planar shaped.

2. Prestressed Concrete Superimposed Sheet Of Steel Bar Truss as claimed in claim 1 is characterized in that described steel bar girder is a triangular truss.

3. steel bar girder prestressing force superimposed sheet as claimed in claim 1 is characterized in that described steel bar girder is snakelike truss.

4. steel bar girder prestressing force superimposed sheet as claimed in claim 1 is characterized in that described steel bar girder is the waveform truss.

5. as claim 1,2,3 or 4 described steel bar girder prestressing force superimposed sheets, it is characterized in that in overlapping layers, being embedded with light filler piece (9) between described steel bar girder.

6. as claim 1,2,3 or 4 described steel bar girder prestressing force superimposed sheets, it is characterized in that in overlapping layers, being embedded with hollow section (10) between described steel bar girder.