CN2261462Y

CN2261462Y - High performance prestressed piled-up roof structure

Info

Publication number: CN2261462Y
Application number: CN 96235462
Authority: CN
Inventors: 龙炳煌; 彭少民; 李书进
Original assignee: Wuhan Polytechnic University
Current assignee: Wuhan Polytechnic University
Priority date: 1996-08-05
Filing date: 1996-08-05
Publication date: 1997-09-03
Anticipated expiration: 2006-08-05

Abstract

The utility model relates to a high performance prestressed composite roof structure, which is composed of a composite plate and a composite layer. A composite beam can also be arranged on the lower part of the composite plate, wherein, the composite plate is a reinforcing plate without a support belt rib. The composite beam is a composite surface reinforcing beam with a steel pipe loose core and a U-shaped end part. The composite layer is II-shaped back casting layer. The utility model solves the technical problems that the stiffness of a flat plate is not enough, and the thickness of the back casting composite layer is difficult to control caused by prestressing camber. The high performance prestressed composite roof structure can cancel the temporary support of the construction of the composite plate simultaneously, simplify construction process, and cancel the splicing procedure of a segment molding beam. The composite surface with the U-shaped end part enhances the shearing bearing capacity of the composite beam. The construction quality of the composite beam can be ensured on construction, and the mechanical property of a nodal region can be enhanced.

Description

The superimposed building cover structure of high efficient prestress

The utility model relates to the superimposed building cover structure of a kind of high efficient prestress.

Existing superimposed building cover structure, its superimposed sheet is solid section flute profile or burst moulding compound beam for dull and stereotyped, superposed beam, and last layer adopts common I grade reinforcing steel usually, and its shortcoming is: superimposed sheet need be provided with construction and support temporarily when installing, difficulty of construction is big; The solid section superposed beam is from great, and the end is cut bearing capacity and is difficult for guaranteeing; Burst moulding compound beam assembly unit difficulty, complex process, cost height; Common I grade reinforcing steel overlapping layers steel using amount is big, and concrete strength requires high, and superimposed dull and stereotyped antiarch is big, and last layer thickness is difficult to control.

The purpose of this utility model is intended to overcome existing iterative structure superstructure above shortcomings, provides a kind of novel high efficient prestress superimposed building cover structure.

The purpose of this utility model realizes in the following manner: the superimposed building cover structure of a kind of high efficient prestress, to form by the overlapping layers on superimposed sheet and the superimposed sheet, and superimposed sheet is for exempting to support reinforcement plate with ribbing, and overlapping layers is corresponding with rib on the superimposed sheet to be II shape.Above-mentioned superimposed sheet also has down superposed beam, and this superposed beam is a hollow, the end superposed surfaces be U-shaped,

Shape or

Shape.

It is dull and stereotyped that the utility model adopts high efficient prestress superimposed sheet with ribbing to replace, and solved dull and stereotyped insufficient rigidity, and because of prestressing camber causes the unmanageable difficult problem of last layer thickness, technology has been simplified in the interim support in the time of can exempting the superimposed sheet construction simultaneously; End U-shaped or flute profile superposed surfaces strengthen hollow superposed beam, replace solid beam or burst moulding superposed beam, cancelled the assembly unit operation of burst moulding beam, simplified the production technology of superposed beam, reduced cost of production, end U-shaped superposed surfaces has improved the bearing capacity of being cut of beam, from the textural construction quality that guarantees beam, has improved the stress performance of node area.

Fig. 1 is one of a utility model structure schematic diagram.

Fig. 2 is two schematic diagrames of the utility model structure.

Fig. 3 is the utility model superposed beam mid section figure.

Fig. 4 is the utility model superposed beam U type cross-sectional end view.

Fig. 5 is the utility model superposed beam The shape cross-sectional end view.

Fig. 6 is the utility model superposed beam The shape cross-sectional end view.

Fig. 7 is the utility model embodiment 1 schematic diagram.

Fig. 1 adds the superposed surfaces structure for the utility model superimposed sheet, and 2 is superimposed sheet, and 3 is overlapping layers, and 4 is rib of slab.

Fig. 2-6 is the another kind of structure of the utility model, 1 for the end be U-shaped, Shape or

The hollow superposed beam of shape superposed surfaces; 2 for exempting to support enhancing superimposed sheet with ribbing on the

superposed beam

1,3 be with superimposed sheet 2 on corresponding II shape enhancing overlapping layers; 4 is rib of slab; 5 are beam-ends U-shaped enhancing superposed surfaces; 6 are beam-ends shape enhancing superposed surfaces; 7 are beam-ends shape enhancing superposed surfaces.The plate length of superimposed sheet 2 is 2400-8000mm, rib of slab 4 segment thickness 40-100mm, and bar is counted the 1-3 bar, also can be the 4-6 bar during plate broad, rib 4 wide 100-500mm; Superposed beam 1 width is 200-800mm, highly is 300-1200mm, and span is 3000-12000, and superposed beam 1 hollow parts average diameter is 100-500mm, the superposed beam beam-ends strengthen superposed surfaces can make U-shaped,

Shape or Shape, the diameter that is distributed with spacing in the overlapping layers and is 50-300mm is the cold rolled reinforcing steel bar with ribs of 4-8mm.

Embodiment 1: the hollow diameter of the superposed beam 2 of superimposed building cover structure is 194mm, deck-siding 300mm, deck-molding 400mm span is 7000mm, the end is a U type superposed surfaces, the long 4000mm of superimposed sheet 1 plate, article two, rib 4, flank thickness 85mm, flank width 250mm, overlapping layers is distributed with the cold rolled reinforcing steel bar with ribs that diameter is 5mm by spacing 250mm, one end of this superimposed floor structure rests on the seismic structural wall, earthquake resistant wall 9, and the other end rests on the Vierendeel girder 8, and this kind structure is mainly used in the large bay house.

Embodiment 2: the long 4000mm of superimposed sheet 1 plate, 2 ribs 4 are arranged on it, flank thickness 85mm, flank width 250mm, overlapping layers is distributed with the cold rolled reinforcing steel bar with ribs that diameter is 5mm by spacing 250mm, one end of this superimposed floor structure rests on the seismic structural wall, earthquake resistant wall 9, and the other end rests on the Vierendeel girder 8, and this kind structure is mainly used in little standard width of a room in an old-style house house.

Claims

1, the superimposed building cover structure of a kind of high efficient prestress is made up of the overlapping layers on superimposed sheet and the superimposed sheet, it is characterized in that described superimposed sheet for exempting to support reinforcement plate with ribbing, and overlapping layers is corresponding with rib on the superimposed sheet to be II shape.

2, building cover structure according to claim 1 is characterized in that under the described superimposed sheet also having superposed beam, and this superposed beam is a hollow, the end superposed surfaces be U-shaped, Shape or

Shape.