CN2573585Y - Post-tensioned concrete arch board roof - Google Patents

Abstract

The utility model relates to a roof, particularly a post-tensioned prestress arch board roof which comprises an upper arch board, an arch ribbon strip, a lower boom horizontal ribbon strip and a lower boom board. The roof is a thin-walled structure body combined a roof board with a roof truss, and the upper arch board, the arch ribbon strip and the lower boom horizontal ribbon strip form an aerial cast-in-situ integral concrete structure. The lower boom board and a web member are precast concrete assembly parts, and the lower boom board is anchored in the concrete of the horizontal ribbon strip; both the upper and the lower ends of the web member are anchored in the concrete arch ribbon strip and the horizontal concrete ribbon strip. The upper arch board and the arch ribbon strip are parabolic types, and the horizontal ribbon strip is a post-tensioned prestress concrete structural member. The roof is provided with a definite number of temperature deforming contraction joints in a longitudinal wall direction, and a definite number of separately independent roof units are formed between two adjacent deforming contraction joints or between the deforming contraction joints and left and right gables and partition walls. The utility model has more reasonable structure than the structures of the existing arch roofs and pretensioning method arch roofs, and the utility model has the advantages of accelerating construction speed, shortening construction period, reducing engineering comprehensive cost and improving the economic benefits of clients and construction units.

Description

Post-tensioned prestressing concrete arch-bar roof system

(1) technical field: the utility model relates to the construction work roof structure, particularly relates to a kind of post-tensioned prestressing concrete arch-bar roof system.

(2) background technology: well-known, adopt the Arch Bar Structure of giving stress steel concrete " grillage unification ", stressed reasonable, save material, reduce construction costs, its development is rapid, and the template kind is more, and flap is arranged, coverboard, double-parabolic slab, arch bar (parabola template) etc.To barn roof, generally adopt the parabolic type arch bar, this arch bar has from water resistance, and its roof system waterproofing work is easy, saves construction cost, generally receives an acclaim.CN1039281 88104187.4 discloses a poured-in-place reinforced concrete vault and has been made up of upper string board, side bar and lower edge pull bar, and upper string board and side bar divide second pouring; 93245017.2 disclose a kind of Wild goose type arched slab, by the arch bar that winds up, lower chord, web member are formed, the section of the arch bar that winds up is a wild goose shape, and the section of lower chord is " protruding " shape, be arranged on wind up and lower edge between web member be rod member or dividing plate.Its advantage of above-mentioned arched roof plate is not need prefabricated place and transportation, hanging device, saves the part construction costs, but design is too simple and more coarse its insulation, heat insulation, air-tightness is relatively poor, its arched roof plate span is less, is not suitable for doing barn roof.

(3) utility model content: the purpose of this utility model is to overcome existing arched roof plate to have defective, designs post-stressed concrete arch-bar roof system.

The technical solution of the utility model is: a kind of post-tensioned prestressing concrete arch-bar roof system, contain arch bar, the arch rib beam, the horizontal girt strip of lower edge, following boom plate, roof system is the thin wall construction body that roof panel and roof truss unite two into one, arch bar on it, the arch rib beam, the horizontal girt strip of lower edge is aerial cast-in-place whole concrete structure, and following boom plate and web member are prefabricated concrete assembly parts, and following boom plate is anchored in the horizontal rib beam concrete, on the web member, the lower end is anchored in respectively in arch rib beam and the horizontal rib beam concrete, last arch bar and arch rib beam are parabolic type, and the horizontal girt strip of lower edge is a post-tensioned prestressing concrete member, and roof system is provided with the temperature deformation shrinkage joint of some along vertical wall length direction, between adjacent two shrinkage joint, or a shrinkage joint and a left side, form some roof system whole unit bearing structures independently separately between the right gable.

The arch rib beam can adopt the beam face to flush with last arch bar plate face or beam at the bottom of flush two kinds of forms with last arch bar bottom surface, the steel mesh reinforcement that arch rib beam and horizontal girt strip have multilayer to interfix in the concrete termination of two ends intersection, in horizontal rib beam concrete, be penetrated with service sleeve, prestressed reinforcement or steel tendon are arranged in the pipe, pass the multistory reinforced net sheet of horizontal rib beam concrete two ends prestressing force and be anchored in its outer end concrete, brace one end is anchored in the arch rib beam concrete of web member upper end, and the other end is anchored in the horizontal rib beam concrete of another web member lower end.

On gable and eaves wall top beam and bottom the horizontal girt strip on lower edge horizontal girt strip bottom and temperature deformation seam both sides, be provided with the pre-buried steel ironware, and lower edge horizontal ribs soffit embedded iron parts and peripheral body of wall collar tie beam and distortion horizontal ribs soffit, both sides, shrinkage joint are given and being buried between the ironware, weld together with ironware, form the space conjoined structure, second pouring concrete Guttr board is set up in the stress reinforcing bar anchoring place outside of giving at post-tensioned prestressing horizontal rib beam concrete two ends, and is filled with waterproofing materials in the temperature deformation shrinkage joint on roof.

In the horizontal ribs beam span center of each whole unit bearing structure of roof system, the vertical span centre steel bar concrete linking beam vertical with horizontal girt strip arranged.

Useful good effect of the present utility model is:

(1) post-stressed concrete arch-bar roof system has structural thermal insulation, heat-proof quality is good, and advantages such as good air-tightness are arranged, and increases the roof system span, expands capacity than existing arched roof plate, reduce construction formwork significantly, scaffold quantity is saved construction costs, reduces construction cost.

(2) posttension is given stress concrete arch-bar roof system than the pre-concrete arched roof plate of answering of pre-tensioning system, and overall structure energy property is better, and structure stress is more reasonable, and the construction plant is flexible, and speed of application is faster, further reduces construction cost, increases to build and unit in charge of construction's economic benefit.

(3) take small-sized place and carry out the prefabricated of boom plate under primary structural component concrete web member and the concrete, can more rationally dispose available manpower, raise labour productivity, quicken the engineering construction progress greatly, obviously shorten construction period, reduce the engineering comprehensive cost.

(4) post-tensioned prestressing concrete arch-bar roof system, the horizontal concrete girt strip of lower edge concrete is being carried out post-tensioned prestressing when applying, both controlled the load of tensioning that gives the stress reinforcing bar, the deflection of answering reinforcing bar is given in control again, it is more even that whole arched roof plate each several part member stress is distributed, more reasonable, improved the overall structure reliability of arched roof plate.

(5) setting up Guttr board, is the sealing off and covering anchorage structure, is again discharge structure, is again decorating structure simultaneously, makes arched roof plate attractive in appearance, practicality, science.

(4) description of drawings:

Fig. 1, post-tensioned prestressing concrete arch-bar roof system top plan view structural representation

One of Fig. 2, post-tensioned prestressing concrete arch-bar roof system fragmentary top TV structure schematic diagram

Two of Fig. 2-1, post-tensioned prestressing concrete arch-bar roof system fragmentary top TV structure schematic diagram

Fig. 3, horizontal section post-tensioned prestressing arched roof plate structural representation

Fig. 4,2-2 cross-sectional view

Fig. 5,3-3 cross-sectional view

One of Fig. 5,1-1 cross-sectional view

Two of Fig. 6-1,1-1 cross-sectional view

Fig. 7, the horizontal girt strip pre-buried steel of lower edge ironware location arrangements schematic diagram

One of Fig. 8, temperature deformation shrinkage joint place's arch rib beam and last Arch Bar Structure schematic diagram

Two of Fig. 8-1, temperature deformation shrinkage joint place's arch rib beam and last Arch Bar Structure schematic diagram

(5) specific embodiment:

Embodiment: referring to Fig. 1,2,2-1,3,4,5,6,6-1,7,8,8-1, this is the post-tensioned prestressing concrete roof system of a silo, 88 meters of its vertical wall length, 24 meters of spans have a pair of partition wall 14 in vertical wall midpoint, 8 at total temperature deformation shrinkage joint, whole arched roof plate is divided into 10 monocoque structure unit.The plane projection of its arched roof plate is a rectangle, and it is y=4FX (L-X)/L that arch rib beam and last arch bar adopt parabolic equation ²Wherein L is: the roof system span, X is o'clock to 0 initial point horizontal range on the horizontal axis, F is the span centre height, Y be on the arch axis line any point to the horizontal axis distance, among the figure, 1 is the horizontal concrete girt strip of lower edge, in horizontal concrete girt strip, service sleeve 5 is arranged, be installed with prestressed reinforcement or steel tendon 9 in the pipe, prestressed reinforcement net sheet 6 is arranged in the concrete of the two ends of horizontal concrete girt strip 1, the prestressed reinforcement anchorage head (not drawing among the figure) that one taper is arranged in reinforced mesh 6 outsides, 2 is concrete arch rib beam, 3 is prefabricated concrete web member, its upper end is anchored in the concrete arch rib beam, the lower end is anchored in the horizontal concrete girt strip of lower edge, 4 is the oblique rollering steel muscle, one end is anchored in web member top concrete arch rib beam, the other end is anchored in the horizontal concrete girt strip in another web member lower end, 7 is concrete arch rib beam is connected net with the reinforcing bar of horizontal concrete girt strip intersection, 8 is the second pouring Guttr board of sealing off and covering anchorage prestressed reinforcement 9 anchorage heads, 10 is arch bar on the concrete, last arch bar 10 and arch rib beam 2 are cast-in-situ concrete structure bodies of plate-girder unification, and 11 are the temperature deformation shrinkage joint, in upper end, deformation joint 11 both sides two parallel arch girt strips adjacent to each other are arranged, two horizontal concrete girt strips of parallel lower edge adjacent to each other are arranged below, about the about 20mm of seam width, 12 is boom plate under the prefabricated concrete, stays reinforcing bar to be anchored in the horizontal concrete girt strip on both sides outward along vertical wall direction, the adjacent concrete horizontal ribs soffit on the both sides, shrinkage joint, on gable and eaves wall steel bar concrete top beam and other concrete horizontal ribs soffit be provided with pre-buried steel ironware 13, between them or and body of wall top beam embedded iron parts between, fixing with ironware welding.Between the two adjacent temperature deformation shrinkage joint 11, or between distortion shrinkage joint and left and right gable and the partition wall whole arched roof plate is divided into several by last arch bar, arch rib beam, the horizontal girt strip of lower edge, the overall structure load bearing unit that web member, brace and following boom plate are formed.When horizontal concrete girt strip 1 intensity reaches more than 80%, the intensity of arch bar 10 reaches 60% when above on concrete arch rib beam 2 and the concrete, run through prestressed reinforcement or steel tendon 9 to horizontal concrete girt strip service sleeve 5, prestressed reinforcement 9 one ends are reinforced with the reverse taper ground tackle earlier, the other end is undertaken also reinforcing with the reverse taper tool behind the grading tension prestressing force by designing requirement, treat roof system unit concrete project finish after before the form removal, can be with the two anchored end straightening of oblique rollering steel muscle, and with stage casing brace welding, form oblique rollering steel muscle 4.

Claims (4)

1. post-tensioned prestressing concrete arch-bar roof system, contain arch bar, the arch rib beam, the horizontal girt strip of lower edge, following boom plate, it is characterized in that: roof system is the thin wall construction body that roof panel and roof truss unite two into one, arch bar on it, the arch rib beam, the horizontal girt strip of lower edge is aerial cast-in-place whole concrete structure, and following boom plate and web member are prefabricated concrete assembly parts, and following boom plate is anchored in the horizontal rib beam concrete, on the web member, the lower end is anchored in respectively in arch rib beam and the horizontal rib beam concrete, last arch bar and arch rib beam are parabolic type, and the horizontal girt strip of lower edge is a post-tensioned prestressing concrete member, and roof system is provided with the temperature deformation shrinkage joint of some along vertical wall length direction, between adjacent two shrinkage joint, or a shrinkage joint and a left side, form some roof system whole unit bearing structures independently separately between the right gable.

2. roof system according to claim 1, it is characterized in that: the arch rib beam can adopt the beam face to flush with last arch bar plate face or beam at the bottom of flush two kinds of forms with last arch bar bottom surface, the steel mesh reinforcement that arch rib beam and horizontal girt strip have multilayer to interfix in the concrete termination of two ends intersection, in horizontal rib beam concrete, be penetrated with service sleeve, prestressed reinforcement or steel tendon are arranged in the pipe, pass the multistory reinforced net sheet of horizontal rib beam concrete two ends prestressing force and be anchored in its outer end concrete, brace one end is anchored in the arch rib beam concrete of web member upper end, and the other end is anchored in the horizontal rib beam concrete of another web member lower end.

3. roof system according to claim 1 and 2, it is characterized in that: on gable and eaves wall top beam and bottom the horizontal girt strip on lower edge horizontal girt strip bottom and temperature deformation seam both sides, be provided with the pre-buried steel ironware, and lower edge horizontal ribs soffit embedded iron parts and peripheral body of wall collar tie beam and distortion horizontal ribs soffit, both sides, shrinkage joint are given and being buried between the ironware, weld together with ironware, form the space conjoined structure, second pouring concrete Guttr board is set up in the stress reinforcing bar anchoring place outside of giving at post-tensioned prestressing horizontal rib beam concrete two ends, and is filled with waterproofing materials in the temperature deformation shrinkage joint on roof.

4. roof system according to claim 1 and 2 is characterized in that: in the horizontal ribs beam span center of each whole unit bearing structure of roof system, the vertical span centre steel bar concrete linking beam vertical with horizontal girt strip arranged.

Images