CN103334526B - A kind of steel web prestressed concrete overlapped slab - Google Patents
A kind of steel web prestressed concrete overlapped slab Download PDFInfo
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- CN103334526B CN103334526B CN201310297726.1A CN201310297726A CN103334526B CN 103334526 B CN103334526 B CN 103334526B CN 201310297726 A CN201310297726 A CN 201310297726A CN 103334526 B CN103334526 B CN 103334526B
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Abstract
The present invention relates to a kind of steel web prestressed concrete overlapped slab, comprise base plate, at least one steel web, at least one edge of a wing; Described steel web is identical with the quantity on the edge of a wing, and steel web is vertically fixedly installed between the edge of a wing and base plate.Have employed steel web in the present invention, effectively make use of the excellent out of plane stiffness of Steel Reduced Web, anti-flexing supporting capacity, shear resistance, lightweight advantage; The mould used when preparing superimposed sheet is simply measured few, easy to make; Can according to cable deployment scenarios, scene is in steel web holes or prefabrication perforate; Base plate and steel web one-time cast-forming, do not have constuction joint; Precast plate weight is lighter.Finished product superimposed sheet quality is improved greatly, also and effectively reduces cost of production, can be used as the favorable substitutes of common precast concrete superimposed sheet.
Description
Technical field
The invention belongs to architectural shape technical field, relate to a kind of steel web (concrete or the steel edge of a wing) prestressed concrete overlapped slab.
Background technology
Concrete floor system can be divided into cast-in-place integral formula by construction method, assembling and the overall three types of assembling.
1, cast-in-place concrete building roof:
It is good that cast-in-place integral superstructure has integral rigidity, anti-seismic performance is strong, the advantages such as the good and superstructure being applicable to particular topology of water resistance, thus multi storied industrial factory building is widely used in, the flooring of layout complexity, the entrance hall part of public building, has the flooring of vibrations load action, tall building floor and have the flooring of shockproof requirements.The shortcoming of cast-in-place integral formula superstructure is that template materials are many, construction wet trade amount is large, speed slow, produces more difficult industrialization.
2, precast assemble floor:
Precast assemble floor is formed by prefabricated entirely, has speed of application fast, is convenient to suitability for industrialized production and mechanized construction, saves labour, situ wet operation is few, saves three materials, the advantages such as short construction period, but its globality is poor, plate seam is more difficult, poor seismic behavior, flexible arrangement degree difference etc.Therefore, its range of application is subject to larger restriction.
3, assembled integral superstructure:
Assembled integral superstructure, by prefabricated units after hoisted in position, makes it to become overall by certain measure.Overall measure conventional at present has: arrangement of reinforcement in-situ layer is made in plate face.The cast-in-place advantage with precast assemble floor of assembled integral floor collection and one, compared with Cast-in-situs type superstructure, can reduce formwork and concrete construction wet trade amount, shorten construction period, realize pre-erection suitability for industrialized production; Compared with precast assemble floor, its integral rigidity and anti-seismic performance improve all greatly, therefore for the larger multi storied industrial factory building of some load, highrise building and the building having requirements for fortification against earthquake, also can adopt this form of structure.
Iterative structure, between cast-in-place integral formula and assembling, belongs to cast in place and precast construction.The steel web prestressed concrete overlapped slab that the present invention mentions belongs to iterative structure, has following features: the main part of the force of (1) this structure manufactures in factory, and mechanization degree is high, and professional technique is skilled, and thus component quality is high.(2) template of prefabricated units can be reused, and during cast-in-place part construction, prefabricated units can be utilized to make scaffold and template, than monolithic construction labor and material saving, and the reduction of erection time.(3) adopt prestressing technique, application high strength steel, to save steel using amount, improves the crack resistance of component in the construction stage.(4) volume is little, lightweight, transporting and hoisting is all more convenient, than the flexibility of fabricated construction and applicability larger.(5) this prefabricated units floor is with prestressing force, and eccentric throw is the distance of prestressed reinforcement to the member section centre of form, and therefore this precast plate can produce certain antiarch value.The large antiarch value of eccentric throw is large, and eccentric throw little antiarch value is little.
In domestic existing floor, cast-in-place concrete floor is taken a lot of work, and expense is expected, long construction period, and need formwork, form removal, efficiency of construction is low; Prefabricated assembled concrete floor and beam-column connection are comparatively complicated, and globality is poor; Profiled sheet combination concrete floor decreases stud, need do fire prevention process and finishing furred ceiling; The existing laminated floor slabs such as prestressed concrete slab laminated floor slab, circular hole slab laminated floor slab, sandwich reinforced concrete slab have prefabricated dull and stereotyped bending rigidity lower, and flat board is thicker, and transport frangibility, during construction, span centre need arrange the shortcomings such as support.
Summary of the invention
For above technical deficiency, the invention provides a kind of with low cost, easy to process, the steel web prestressed concrete overlapped slab of superior performance, long service life.
To achieve these goals, the present invention adopts following technical scheme.
A kind of steel web prestressed concrete overlapped slab, comprises base plate, at least one steel web (steel Web shape can be corrugated steel web or straight steel plate etc.), at least one edge of a wing (edge of a wing can be the concrete edge of a wing or the steel edge of a wing etc.); Described steel web is identical with the quantity on the edge of a wing, and steel web is vertically fixedly installed between the edge of a wing and base plate.
The quantity on the described edge of a wing is two or more, and the edge of a wing is arranged in parallel.
Preferred according to the present invention, described base plate is the concrete slab that inside is provided with prestressed reinforcement; The described edge of a wing is the steel concrete stick that inside is provided with reinforcing bar; Described many brace summers are the steel concrete stick that inside is provided with reinforcing bar.
Preferred according to the present invention, described base plate thickness is preferably 30-40mm, and width is preferably 1000mm.
In the present invention, steel web type selecting has multiple: straight steel web type, corrugated steel web type (sinusoidal, trapezoidal etc.), discontinuous formula steel web type, two bar straight parallel steel web types etc.
In the present invention, steel web can preformed open-cell, so that floor pipeline, reinforcing bar pass, pitch-row is 150mm-200mm, and hole shape can be square, circular, oval etc., and hole size should be not less than 30mm.
In the present invention, the edge of a wing can be the steel concrete edge of a wing, the steel edge of a wing or other form edges of a wing etc.
In the present invention, each several part scantling changes with the change such as floor span, working load requirement.
Watering lamination portion concrete after in the present invention should at least higher than pre-erection edge of a wing top 25mm.
Beneficial effect of the present invention:
1. steel web prestressed concrete overlapped slab of the present invention, it is with low cost, easy to process, superior performance, long service life; Described superimposed sheet has from heavy and light, bending resistance, shearing resistance and Torsion bearing capacity advantages of higher, is very good structural element.
2. have employed steel web in the present invention, effectively make use of the excellent out of plane stiffness of steel web, anti-flexing supporting capacity, shear-carrying capacity; The mould used when preparing superimposed sheet is simply measured few, easy to make; Can on steel web provided pipe string holes hole; Base plate and corrugated steel web one-time cast-forming, do not have constuction joint, and finished product superimposed sheet quality is improved greatly.
3. base plate top (rib is made up of steel web and the edge of a wing) with ribbing, effectively reduce base plate thickness, improve the bending rigidity of prefabricated superimposed sheet, and under prestressing force effect, form certain prestressing camber value, improve prestressing force service efficiency, effective reduction cost of production, performance is much better than common precast concrete superimposed sheet.
4. superimposed sheet of the present invention is compared with all the other prestressed concrete overlapped slabs with ribbing, has following substantial difference and advantageous feature:
A. the present invention effectively make use of the excellent out of plane stiffness of steel web, anti-flexing supporting capacity, shear-carrying capacity, and mould is simple, easy to make, web hole can according to cable designs situation, on-the-spot perforate, cost reduces greatly, and make efficiency is accelerated, and improves the mechanical property of superimposed sheet; B. the steel web that the present invention adopts has less cross section than all the other prestressed concrete overlapped slab webs with ribbing, conducts oneself with dignity lighter; C. the present invention can by optimizing the profile of steel web, and the fixed coefficient on itself and base plate and the edge of a wing is increased greatly.D. the present invention can select different steel Web shape according to actual conditions, and edge of a wing form.
Accompanying drawing explanation
Fig. 1 is the structural representation of corrugated steel web prestressed concrete overlapped slab;
Fig. 2 is the structural representation of Dan Zhigang web prestressed concrete overlapped slab;
Fig. 3 is the structural representation of two straight steel web prestressed concrete overlapped slab;
Fig. 4 is the structural representation of corrugated steel web-steel edge of a wing prestressed concrete overlapped slab;
Fig. 5 is the structural representation of Dan Zhigang web-steel edge of a wing prestressed concrete overlapped slab;
Fig. 6 is the structural representation of two straight steel web-steel edge of a wing prestressed concrete overlapped slab;
Fig. 7 is the structural representation of wall scroll corrugated steel web prestressed concrete overlapped slab;
In figures 1-7,1, prestress baseboard; 2, the edge of a wing; 3, steel web.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Fig. 1-Fig. 7, a kind of steel web prestressed concrete overlapped slab, comprise prestress baseboard 1, at least one edge of a wing 2(concrete, steel or other form edges of a wing), the mono-straight steel plate of at least one steel web 3(, two straight steel plate, corrugated steel web or other forms), described steel web 3 is identical with the quantity on the edge of a wing 2, and steel web 3 is vertically fixedly installed between the edge of a wing 2 and prestress baseboard 1.
Described prestress baseboard 1 is the inner concrete slab being provided with prestressed reinforcement; The described edge of a wing 2 is that inside is provided with the steel concrete stick of reinforcing bar or adopts the forms such as the steel edge of a wing; The form of described steel web 3 has multiple (the present embodiment is preferred 3 kinds).
The material of the concrete slab of described prestress baseboard 1 is C50 concrete; Described steel web prestressed concrete overlapped slab size is fixed with engineering reality; Prestressed reinforcement is 1570 grades of φ preferably
h4.8 eliminate stress helix rib steel wire.
In embodiment 1, as shown in Figure 1, steel web 3 is corrugated steel web, quantity two, and the edge of a wing is the concrete edge of a wing, arranged in parallel.
In embodiment 2, as shown in Figure 2, steel web 3 is Dan Zhigang web, quantity two, and the edge of a wing is the concrete edge of a wing, arranged in parallel.
In embodiment 3, as shown in Figure 3, steel web 3 is two straight steel webs, and quantity two, the edge of a wing is the concrete edge of a wing, arranged in parallel.
In embodiment 4, as shown in Figure 4, steel web 3 is corrugated steel web, quantity two, and the edge of a wing is the steel edge of a wing, arranged in parallel.
In embodiment 5, as shown in Figure 5, steel web 3 is Dan Zhigang web, quantity two, and the edge of a wing is the steel edge of a wing, arranged in parallel.
In embodiment 6, as shown in Figure 6, steel web 3 is two straight steel webs, and quantity two, the edge of a wing is the steel edge of a wing, arranged in parallel.
In embodiment 7, as shown in Figure 7, steel web 3 is corrugated steel web, quantity one, and the edge of a wing is the concrete edge of a wing.
Experimental data:
Anti-bending bearing capacity test is carried out to steel web prestressed concrete overlapped slab of the present invention.Board size is: the wide 1000mm of prestress baseboard 1, length 2850mm, clear span 2700mm(two end bearing shelving length 75mm); Steel web 3 form be 2 sinusoidal corrugated steel webs as Fig. 1, the high 35mm of steel web 3, the thickness 1.5mm of steel web 3, the perforate of steel web is Φ 30200; The edge of a wing 2 is the concrete edge of a wing, 2 wide 150mm in the concrete edge of a wing, long 2850mm, thick 35mm; Unit Weight is adopted to be the sandbag of 10kg when carrying out anti-bending bearing capacity experiment to corrugated web prestressed concrete overlapped slab, with hierarchical loading form, (every grade loads 160Kg, 16 sandbags, amount to loading 15 grades) be evenly placed on described superimposed sheet, to simulate evenly distributed load.Result of the test draws: span is the cracking load 4.01kN/m of the corrugated web prestressed concrete overlapped slab of 2700mm
2> 3.5kN/m
2(construction stage total load), mid-span deflection is 17mm < L/200=20.2mm, and wherein L is the span of corrugated web prestressed concrete overlapped slab, anti-bending bearing capacity 8.5kN/m
2, meet strength and stiffness requirement.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (1)
1. a steel web prestressed concrete overlapped slab, is characterized in that, comprises base plate, at least one steel web, at least one edge of a wing; Described steel web is identical with the quantity on the edge of a wing, and steel web is vertically fixedly installed between the edge of a wing and base plate;
The quantity on the described edge of a wing is two or more, and the edge of a wing is arranged in parallel;
Described base plate is the concrete slab that inside is provided with prestressed reinforcement; The described edge of a wing is the steel concrete stick that inside is provided with reinforcing bar;
The material of described concrete slab is C50 concrete; Evenly prestressed reinforcement is provided with in base plate; Described prestressed reinforcement is 1570 grades of Φ
h4.8 eliminate stress helix rib steel wire;
Described steel web preformed open-cell, pitch-row is 150mm-200mm, and hole shape is square, circular or oval, and hole is not less than 30mm; The wide 1000mm of base plate, length 2850mm, clear span 2700mm, two end bearing shelving length 75mm; Steel web form is the thickness 1.5mm of the high 35mm of 2 sinusoidal corrugated steel webs, steel web, steel web; The edge of a wing is the concrete edge of a wing, is evenly provided with 2 reinforcing bars in the edge of a wing, and described reinforcing bar is 2 Φ 6HPB300 level reinforcing bars, 2 wide 150mm in the concrete edge of a wing, long 2850mm, thick 35mm.
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| CN201310297726.1A CN103334526B (en) | 2013-07-16 | 2013-07-16 | A kind of steel web prestressed concrete overlapped slab |
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| CN105756278B (en) * | 2016-04-01 | 2018-04-06 | 张波 | Groove type sheet pack panel members |
| CN105822012B (en) * | 2016-04-01 | 2018-06-22 | 山东万斯达建筑科技股份有限公司 | Bend groove type steel plate type overlapping board member |
| CN105756270B (en) * | 2016-04-02 | 2018-08-14 | 张波 | Waveform steel plate type overlaps board member |
| CN106223520A (en) * | 2016-08-08 | 2016-12-14 | 四川三阳钢结构有限公司 | A kind of thin light laminated floor slab and manufacture method |
| CN107190884A (en) * | 2017-06-09 | 2017-09-22 | 东南大学 | A kind of new many high-rise hot-rolled steel section composite light-weight steel shear wall combined structure systems |
| CN107268419B (en) * | 2017-07-24 | 2022-02-11 | 中交二航局南方工程有限公司 | Hinge transport equipment |
| CN113530052B (en) * | 2021-07-13 | 2022-09-16 | 山东大学 | Ribbed laminated slab with stacking and hoisting integrated piece and stacking and hoisting method thereof |
| CN113526339B (en) * | 2021-07-13 | 2023-10-13 | 山东大学 | Ribbed laminated plate with stacking and hoisting integrated piece and stacking and hoisting method thereof |
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| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
| DE102010021887A1 (en) * | 2010-05-28 | 2011-12-01 | Schneider Betonfertigteilewerk Gmbh | Concrete ceiling, has high-strength concrete shell designed without reinforcement unit that is utilized for load-bearing capacity of ceiling, during tensile stress, and forming formwork for in-situ concrete, which comprises steel strands |
| CN102409786A (en) * | 2011-09-09 | 2012-04-11 | 邹剑强 | Concrete reinforced channeled steel plate, building roof panel and construction method of building roof panel |
| CN102628304A (en) * | 2012-04-23 | 2012-08-08 | 山东大学 | Corrugated web prestressed concrete laminated plate and preparation method thereof |
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|---|---|---|---|---|
| WO1999029980A1 (en) * | 1997-12-10 | 1999-06-17 | James Hardie Research Pty. Limited | Floor/ceiling construction method |
| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
| DE102010021887A1 (en) * | 2010-05-28 | 2011-12-01 | Schneider Betonfertigteilewerk Gmbh | Concrete ceiling, has high-strength concrete shell designed without reinforcement unit that is utilized for load-bearing capacity of ceiling, during tensile stress, and forming formwork for in-situ concrete, which comprises steel strands |
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Effective date of registration: 20211020 Address after: Room 156, No. 62, xiaozhuangke village, Yongning Town, Yanqing District, Beijing 102104 Patentee after: Beijing qingshengjian Engineering Technology Research Institute Co.,Ltd. Address before: 250061, No. ten, No. 17923, Lixia District, Ji'nan City, Shandong Province Patentee before: SHANDONG University |