CN2141442Y

CN2141442Y - Reinforced concrete hanged arch large roof plate

Info

Publication number: CN2141442Y
Application number: CN 92239454
Authority: CN
Inventors: 韩柱勋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-30
Filing date: 1992-10-30
Publication date: 1993-09-01
Anticipated expiration: 2002-10-30

Abstract

The utility model relates to a reinforced concrete two hinged arch large roof plate which is composed of two or more arch ribs 1 in the arc-line shape or the fold-line shape, two level arch-springing recumbent beams 3 which are respectively arranged on the two feet of the arch ribs and are perpendicular to the arch ribs 1, one or two draw rods 2 which pass through the preformed holes of the two arch-springing recumbent beams 3, one or two arch-middle cross ribs 4 which are vertically connected with the arch ribs 1, and an upper and a lower reinforced concrete guard plates 5 and 6. The end head of the draw rod 2 is buried in the concrete during the secondary irrigating after the arch face is positioned. The utility model has good rigidity and stability. The end head of the draw rod can effectively prevent the rust, the heat-insulating property can be regulated, and a skylight window and an exhaust vent are conveniently arranged on the top of the roof.

Description

Reinforced concrete hanged arch large roof plate

The utility model relates to the roof of buildings plate, particularly relates to steel concrete two-hinged arch large roof slab.

The building roof system that integrates load-bearing and space enclosing structure, not only roof structure is from heavy and light, simple in structure, easy to make, and can give full play to the stress performance of material, also accelerating construction progress is greatly received good economic effect, and therefore vast building operation person makes great efforts to develop this class building roof system always.So arch roof truss has appearred in the seventies, v-shaped folded plate and flap bow member.The Heilongjiang Province successively succeeded in developing and gave big plate of stress steel concrete arch roofing and aeration type roofing large board member the late nineteen eighties.These two kinds of board members all have simple in structure, save the advantage of template and construction plant, but these two kinds of plates prove that also there is weak point in this plate in design through in the past few years construction with use practice, demand urgently improving.Such as: the rigidity of big plate is relatively poor, and the aspect waterproof is easy to break and leaks, and topped area reaches 90M ²Roof panel do not have the minimum measure that is connected unexpectedly with body of wall; The anchored end of the important stressed pull bar of arch bar is exposed to the member outside, very easily corrosion; Step out none fulcrum of plane based on the arch rib 30m that bears pressure, lateral stability is relatively poor etc.

The purpose of this utility model is that a kind of new steel concrete two-hinged arch large roof slab will be provided, and it has the advantage of above-mentioned reinforced concrete arch roof panel, and overcomes their weak point, and the stress performance and the rigidity of plate improve.

For achieving the above object, the utility model is by two or more camber line shapes or broken line shape arched rib 1, two respectively at the arched rib bipod perpendicular to the horizontal arch springing of arched rib 1 beam 3 that crouches, one or two pull bar 2 that passes two arch springings beam 3 preformed holes for sleeping in, one or more vertical connections are in arched rib 1 and connect between the arch of each arched rib cross rib 4 and in arched rib, upper and lower 5,6 formations of upper and lower layer steel concrete pad plate of cross rib.

Arched rib 1 and pull bar 2 are with arch springing beam 3 for sleeping in and stressed whole skeleton system of cross rib 4 common formations, upper and lower layer armored concrete slab the 5, the 6th, the space enclosing structure of roof panel.The end of roof panel can be provided with the reservation ironware 12 that is connected with body of wall.

Arched rib 1 is parabola shaped or circular curve shape, perhaps broken line shape.Arched rib is the main supporting member of roof panel, and it bears the deadweight of variable load from roofing (snow load and maintenance load etc.) and roof panel.

Pull bar 2 is reinforcement rod that II level or III grade reinforcing steel are made, and the pull bar both ends are upset as round major part 8, and passes the preformed hole of arch springing beam 3 for sleeping in, fills up with billet 7 and the intermediate plate 11 that gradient trough of belt mouth is arranged again, and makes pull bar tensioning anchoring.Behind the roof panel installation in position, carry out final grouting anchored end is embedded in the concrete of arch springing Wo Liang middle and lower part, more effectively prevent corrosion, make the cornice neat appearance simultaneously, see Fig. 5,5 '.

Arch springing beam 3 for sleeping in is positioned at arch underfooting, two ends, is arch and building load bearing wall member in succession.The horizontal thrust that arched rib produced balances each other by the pulling force of arch springing Wo Liang and pull bar.After roof panel was in place, arch springing 3 on beam for sleeping in was the transverse beam of bearing horizontal force.

Cross rib 4 is that roof panel is got in touch the important component that all arched rib make it to form integral body, and its existence helps the lateral stability based on the arched rib of bearing pressure greatly.Cross rib 4 and arched rib 1 vertical handing-over between arch, cross rib quantity between arch and the distance between two cross ribs design on demand, and characteristics of the present utility model are to have a cross rib at least, and the roof puts in a skylight and establishes steam vent, can establish cross rib on the perforate both sides.

Top plate 5 is the prefabricated reinforced concrete flat board.The part plate welds mutually with arched rib in the top plate, and arched rib is connected each other.Such measure, the part top plate plays the effect of cross rib, has increased the rigidity of arched rib and stablizing of out-of-plane.Top plate also is simultaneously a member of the roofing Load Transfer being given arched rib.It is the basic unit of roof waterproof layer.

Lower plywood 6 is and arched rib 1 that the cast-in-place plate that cross rib 4 is built simultaneously, it and top plate constitute an air buffer jointly and play function of heat insulation.Thermal insulation requires when high, then can lay the light heat insulation material of suitable thickness on lower plywood.

Reinforced concrete prefabricated two-hinged arch roof panel has bigger coverage rate, and its appearance and size can form series with the span L of plate and the variation of width B.Plate stride L can be between 9-30m be the modulus increase and decrease with differential 3m, the design of the wide B of plate can be defined as 1.8m, 2.4m, 3.0m, 3.6m etc., it is two kinds of 2.4m and 3.6m that the utility model is established B, roof panel has three arched rib when B=2.4m, roof panel then has four arched rib (seeing Fig. 4,4 ') when B=3.6m, select for use which kind of plate wide, can be according to the crane gear conditional decision at scene, can select also that different plates is wide to be made up according to the length of building for use.Can also determine its span and width according to the actual conditions of building when needing.

Stride when plate and can adopt welding (group's bar weldering, flash butt welding etc.) or cold extrusion connection when big pull bar reinforcing bar 2 needs spreading.

Superposed type production is adopted in the construction of this roof panel, and the assembling of pull bar is after the roof panel concreting of the last layer of superimposed production, and concrete strength carries out when reaching 70% above design strength.

Assembling will be carried out tensioning to pull bar during pull bar, and its purpose one is to overcome because the deadweight influence of pull bar makes pull bar be in relaxed state, and the 2nd, pull bar can produce elongation strain after bearing pulling force, make between two bearings of arch bar and produce bigger relative displacement.The too much displacement of the two generation can make the arch rib lower edge crack occur when serious, so the tensioning pull bar played the effect of " arch camber ", has not only strengthened the rigidity of roof panel, has also guaranteed the stress of two hinged arch simultaneously.

The utility model has the advantages that with the arched rib to be main body and arch springing Wo Liang and stressed whole skeleton system of the common formation of cross rib.Make the transfer route of load clear and definite, simple and direct, strengthened the rigidity of arch sheet greatly; The foundation of stress frame system, for offering the skylight and steam vent has been created necessary condition in the roof system top, therefore also enlarged the scope of application of arch sheet; Thermal and insulating performance can be regulated according to the instructions for use of building, can satisfy the needs of different user; The end structure of reinforcing pull rod is reasonable, can imbed in the concrete, more effectively prevents corrosion, makes the cornice neat appearance simultaneously again; Arch sheet is reasonable with being connected of body of wall, the ability that has strengthened the roof system antidetonation and born horizontal force action; The top reinforcement concrete prefabricated board adopts compressor wire to make, not only the deadweight of lightened plate floor but also increased the rigidity of plate.

Further describe structure of the present utility model below in conjunction with example and accompanying drawing,

Fig. 1 is the elevation of the utility model example 1

Fig. 2 is the elevation of the utility model example 2

Fig. 3 is a vertical view of the present utility model

Fig. 4,4 ' is a 1-1 sectional view of the present utility model

Fig. 5,5 ' is a tie rod end assembling diagrammatic sketch of the present utility model

Fig. 6 is the diagrammatic sketch that combines of backing plate 7 and clamping plate 11 in the utility model.

Fig. 7 is that ironware connection diagrammatic sketch is reserved in the utility model roof panel end

Fig. 8 is 12 ironware phantom drawings in the utility model

As seen from Figure 1, camber line arch large roof slab is that the geometry with arch is the two hinged arch arched roof panel that parabola or circular curve are formed, broken line arch roof panel is that the geometry of arch is the two hinged arch arched roof panel (Fig. 2) that broken line is formed, and they are the roofing covering members that integrate load-bearing and space enclosing structure.It is by arched rib 1, pull bar 2, the arch springing beam 3 that crouches, and six parts such as cross rib 4 and upper and lower layer

armored concrete slab

5,6 are formed between arch.

Fig. 3,4 expression arched roof panel plates are wide be 2.4m, design and define three arched rib 1, it and cross rib 4 vertical connections.Fig. 4 ' display plate is wide to be 3.6m, and four arched rib are arranged, between two arched rib at a distance of 1.2m.

There are crab-bolt 9 anchorings arch sheet and body of wall 10 junctions as seen from Figure 5.

Pull bar termination rivet clasp is that wedging intermediate plate 11 is realized in the neck of pull bar jumping-up portion 8 on backing plate 7 as seen from Figure 6.

Visible reserve three mutual vertical connections that ironwares 12 are made up of angle steel and fluting iron plate by Fig. 7,8.

Example 2 broken line large roof slabs and example 1 camber line arch large roof slab belong to the two hinged arch structure together, and its structure, stress frame system and job practices etc. are all identical.Broken line arch stress performance is superior not as good as parabolic arch, the member characteristics of palette, frame unification be other structural systems can't be obtained.Broken line arch large roof slab can be used for, the roof structure of little span.

Broken line arch large roof slab is except the advantage with camber line arch large roof slab, and it also is folding, linear because of arch rib, so structure of transvers plate is simple.When span or gradient change, only need the template of arch springing beam sides template for sleeping in and ridge part is changed slightly, all the other all can be general, so can reduce operating expenses greatly.

Claims

1, a kind of steel concrete two-hinged arch large roof slab, its formation comprises two or more camber line shapes or broken line shape arched rib 1, two respectively at the arched rib bipod perpendicular to the horizontal arch springing of arched rib 1 beam 3 that crouches, one or two is passed the crouch pull bar 2 of beam 3 preformed holes and on arched rib of two arch springings, under on, lower floor's steel concrete pad plate 5,6, it is characterized in that it also includes one or more vertical connections in arched rib 1 and connect cross rib 4 between the arch of each arched rib, arched rib 1 and pull bar 2 are with arch springing beam 3 for sleeping in and stressed whole skeleton system of cross rib 4 common formations.

2, by the described steel concrete two-hinged arch of claim 1 large roof slab, it is characterized in that the part plate has embedded iron parts in the top plate 5, it can weld with the pre-buried iron phase on the arched rib.

3, by claim 1 or 2 described steel concrete two-hinged arch large roof slabs, it is characterized in that the end of roof panel can be provided with the reservation ironware 12 that is connected with body of wall.

4, by the described steel concrete two-hinged arch of claim 1 large roof slab, it is characterized in that the pull bar both ends are upset as round major part 8, pass the preformed hole of arch springing beam 3 for sleeping in, by the steel intermediate plate 11 tensioning anchorings of billet 7 and acclive trough of belt mouth, the anchoring termination is embedded in the concrete of final grouting.