CN101831976A - Prefabricated steel rib bottom plate-concrete overlapped hollow floor system - Google Patents
Prefabricated steel rib bottom plate-concrete overlapped hollow floor system Download PDFInfo
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- CN101831976A CN101831976A CN200910226725A CN200910226725A CN101831976A CN 101831976 A CN101831976 A CN 101831976A CN 200910226725 A CN200910226725 A CN 200910226725A CN 200910226725 A CN200910226725 A CN 200910226725A CN 101831976 A CN101831976 A CN 101831976A
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Abstract
本发明公开了一种预制带钢骨肋底板-混凝土叠合空心楼盖，包括预制混凝土底板1、钢骨肋2、预制底板构造钢筋3、钢骨肋上预留孔洞4、横向穿孔预应力或非预应力的钢筋、钢丝或钢绞线5、空心模壳支撑框6、空心模壳顶板7、现浇叠合层混凝土8。本发明的特征在于：所制成的混凝土叠合空心楼盖内部含有带钢骨肋2预制混凝土底板1。其施工方法为：设置板底支撑系统；安装带钢骨肋预制混凝土底板1，将其两端放在承重墙(梁)上，将预制底板构造钢筋3伸入墙(梁)钢筋笼内；布置横向横向穿孔预应力或非预应力的钢筋、钢丝或钢绞线5；安装空心模壳6和顶板7，浇筑叠合层混凝土8；养护拆除板底支撑。本发明具有承载力大、抗震性能好、便于工厂制作、施工方便、节省混凝土、省模板、仅需设置少量支撑、防火性能好、可增大楼层净空等优点，特别适合高层建筑和大跨度结构的楼盖结构。
The invention discloses a prefabricated steel ribbed floor-concrete laminated hollow floor, which comprises a prefabricated concrete floor 1, steel ribs 2, prefabricated floor structural steel bars 3, reserved holes 4 on the steel ribs, transverse perforated prestress Or non-prestressed steel bar, steel wire or steel strand 5, hollow formwork support frame 6, hollow formwork top plate 7, cast-in-place laminated concrete 8. The present invention is characterized in that: the prepared concrete laminated hollow floor contains a prefabricated concrete bottom plate 1 with steel ribs 2 inside. The construction method is as follows: setting up the slab bottom support system; installing the prefabricated concrete bottom slab 1 with steel ribs, placing its two ends on the load-bearing wall (beam), and extending the structural reinforcement 3 of the prefabricated bottom slab into the reinforcement cage of the wall (beam); Arrange horizontally perforated prestressed or non-prestressed steel bars, steel wires or steel strands 5; install hollow formwork 6 and roof 7, pour laminated layer concrete 8; maintain and remove the support at the bottom of the slab. The invention has the advantages of large bearing capacity, good anti-seismic performance, convenient factory production, convenient construction, saving concrete, saving formwork, only needing a small amount of support, good fireproof performance, and can increase floor clearance, etc., and is especially suitable for high-rise buildings and long-span structures roof structure.
Description
Technical field:
The present invention relates to the realm of building construction, specifically refer to a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system.
Background technology:
At present, the reinforced concrete floor of domestic employing has cast-in-situ floor, precast floor slab, and laminated floor slab.Cast-in-situ floor cast-in-situ steel reinforced concrete floor construction efficient is low, reinforced steel bar strength is not enough, consume wooden form and supports in work progress in a large number and occur the crack in cast-in-place plate easily; Precast floor slab does not need on-the-spot formwork, and construction week is short, and cost is low, but prefabricated units lift difficulty from great, and globality is poor, and, generally can only unidirectional bearing load.And the prefabricated panel major part of the employing of more existing laminated floor slabs is precast prestressed concrete base plates with ribbing, frangibility in transportation and hoisting process, in the construction a large amount of supports need be set, more and more can not satisfy the demand for development of highrise building and longspan structure.Publication number be CN1254589C patent disclosure a kind of prestressed concrete precast member board with ribbing, comprise reinforced concrete floor, steel concrete longitudinal rib and bottom presstressed reinforcing steel, do not need formwork in this floor slab construction, it is convenient now to wear reinforcing bar, easily forms the bidirectional stress floor after the cast-in-situ concrete.But frangibility in this precast member board transportation and the lifting, baseboard prestress muscle construction technology complexity, the antiarch value of precast member board is bigger, base plate is thinner, its inner presstressed reinforcing steel that exists causes the floor fireproof performance after superimposed poor, simultaneously in the construction because prefabricated panel is a concrete rib, so more support need be set, and inapplicable long-span floor system structure.
The development of domestic in recent years steel-concrete building cover structure system rapidly, the mode of employing mainly is, does skeleton with shaped steel, with profiled sheet instead of part tensile reinforcement and template, this floor is higher than reinforced concrete floor bearing capacity.But profiled sheet must be placed in the top flange of section steel beam; cast-in-place steel concrete and shaped steel contact surface are little; prevent that slippage from also need weld circular beam anchoring position; construction technology is loaded down with trivial details; particularly shaped steel web and the last bottom flange place of exposing need be coated with the fireproof paint protection; the building costs height, the superstructure heat insulation performance is poor.Publication number be CN310276A patent disclosure a kind of steel-concrete building cover structure, on shaped steel, lay profiled sheet, this mode has increased the bearing capacity of superstructure, but the shaped steel below the superstructure need be brushed fireproof paint, increased building costs, the shaped steel below the superstructure needs the furred ceiling finishing to reduce the height in hand in house simultaneously.
Summary of the invention:
There are the problems referred to above for solving concrete floor slab and steel-concrete building cover structure, the invention provides a kind of novel steel-concrete folding building cover structure, this superstructure has that bearing capacity is big, anti-seismic performance good, is convenient to produce in factory, easy construction, saving steel and concrete, province's template, only need to support on a small quantity, fireproof performance is good, can increase advantage such as floor headroom.
The present invention adopts following scheme to realize, the invention discloses a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system and job practices thereof, comprise reserving hole, cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand, hollow mould carriage, hollow mould top board, cast-in-place overlapping layers concrete on band reinforcing bar rib precast concrete base plate, vertical reinforcing bar rib, prefabricated panel distributing bar, the reinforcing bar rib.It is characterized in that made concrete overlapped hollow floor system inside contains band reinforcing bar rib precast concrete base plate.The reinforcing bar rib is embedded in the precast concrete base plate, and making the precast concrete base plate of band reinforcing bar rib frangibility not in transportation and work progress does not need formwork in the site operation, only a small amount of support need be set.Above the reinforcing bar rib reserving hole is arranged, make things convenient for cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand to pass; Two reinforcing bar intercostals are conveniently arranged hollow mould and preheating embedding lines simultaneously; Cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand and vertical reinforcing bar rib form crisscross layout, can bear bidirectional load.Behind the concreting, integral body is formed in band reinforcing bar rib precast concrete base plate, cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand, hollow mould, cast-in-situ concrete, the floor good integrity, and bearing capacity and shock resistance are good; Do not need on-the-spot formwork, easy construction; Vertically the reinforcing bar rib is wrapped up refractoriness and good endurance fully by concrete.Simultaneously vertically the reinforcing bar rib can shaped steel or other steel make
Steel composite member Deng different shape.So vertical reinforcing bar rib can be according to the actual mode of occupation of superimposed superstructure, the precast concrete base plate of the vertical reinforcing bar rib of band of design and combination different cross section form, give full play to the mechanical characteristic of various section form steel composite membeies, make superimposed superstructure can better meet withstand shocks under the various service condition, instructions for use under vibrations, point load etc. or the various different load combination.
Feature of the present invention is that also the height of the hollow mould top board installed is not less than the height of reinforcing bar rib.Can effectively alleviate the weight of superstructure like this, reduce the floor comprehensive cost, make things convenient for the installation and the location of hollow mould simultaneously.
Feature of the present invention is that also hollow mould top board reinforcing bar can weld with vertical shaped steel rib welding or part, forms common force structure, improves the performance of overlapped hollow floor system.
Description of drawings:
The invention discloses a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system and job practices thereof, as accompanying drawing 1-shown in Figure 180 1 is that precast concrete base plate, 2 is that reinforcing bar rib, 3 is that prefabricated panel distributing bar, 4 is that reserving hole on the reinforcing bar rib, 5 is that cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand, 6 are that hollow mould carriage, 7 is that hollow mould top board, 8 is cast-in-place overlapping layers concrete, and 9 is hollow mould top board reinforcing bar.
Fig. 1 is a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system perspective view
Fig. 2 is another embodiment of a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system
Fig. 3 is that a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system is installed the hollow mould schematic diagram
Fig. 4 is that a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system is installed another embodiment of hollow mould
Fig. 5 is another embodiment of a kind of prefabricated steel rib bottom plate-concrete overlapped hollow floor system
Fig. 6 is band
Shaped steel bone rib precast concrete base plate perspective view
Fig. 7 is band
Shaped steel bone rib precast concrete base plate perspective view
Fig. 8 is two for band
Shaped steel bone rib precast concrete base plate perspective view
Concrete form of construction work:
The present invention is described further below in conjunction with accompanying drawing
Comprise that with reference to figure 1, Fig. 21 is that precast concrete base plate, 2 is that reinforcing bar rib, 3 is that prefabricated panel distributing bar, 4 is that reserving hole on the reinforcing bar rib, 5 is that cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand, 6 are that hollow mould carriage, 7 is that hollow mould top board, 8 is cast-in-place overlapping layers concrete, 9 is hollow mould top board reinforcing bar.Its feature contains band reinforcing bar rib precast concrete base plate in made concrete overlapped hollow floor system inside.
Comprise that with reference to figure 3, Fig. 41 is that precast concrete base plate, 2 is that reinforcing bar rib, 3 is that prefabricated panel distributing bar, 4 is that reserving hole on the reinforcing bar rib, 5 is that cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand, 6 are that hollow mould carriage, 7 is that hollow mould top board, 8 is cast-in-place overlapping layers concrete, 9 is hollow mould top board reinforcing bar, it is characterized in that the height of the hollow mould top board installed is not less than the height of reinforcing bar rib.Can effectively alleviate the weight of superstructure like this, reduce the floor comprehensive cost, make things convenient for the installation and the location of hollow mould simultaneously.
Comprise that with reference to figure 51 is that precast concrete base plate, 2 is that reinforcing bar rib, 3 is that prefabricated panel distributing bar, 4 is that reserving hole on the reinforcing bar rib, 5 is that cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand, 6 are that hollow mould carriage, 7 is that hollow mould top board, 8 is cast-in-place overlapping layers concrete, 9 is hollow mould top board reinforcing bar, it is characterized in that hollow mould top board reinforcing bar can weld with vertical shaped steel rib welding or part, form common force structure, improve the performance of overlapped hollow floor system.
Be band reinforcing bar rib precast concrete base plate perspective view 1 with reference to figure 7, Fig. 8, Fig. 9.
Working procedure of the present invention is:
(1) be provided with at the bottom of the plate and support: at two plate ends support is set respectively, span centre is looked span and one twice are set are supported;
(2) lay band reinforcing bar rib precast concrete base plate 1, its two ends are positioned on the load bearing wall (beam), and prefabricated panel distributing bar 3 is stretched into, in wall (beam) reinforcing cage;
(3) arrange cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand 4, the superstructure preheating embedding line is installed;
(4) hollow mould 6 and top board 7 are installed, and with hollow mould and stationary positioned;
(5) build overlapping layers and reinforcing bar intercostal concrete eight;
(6) maintenance is supported at the bottom of reaching and removing plate after certain intensity.
Claims (3)
1. prefabricated steel rib bottom plate-concrete overlapped hollow floor system, comprise precast concrete base plate (1), vertically reinforcing bar rib (2), prefabricated panel distributing bar (3), reserving hole (4), cross-perforating prestressing force or nonprestressed reinforcement, steel wire or steel strand (5), hollow mould carriage (6), hollow mould top board (7), cast-in-place overlapping layers concrete (8), it is characterized in that made overlapped hollow floor system inside is contained to be with vertical reinforcing bar rib (2) precast concrete base plate (1).
2. prefabricated steel rib bottom plate-concrete overlapped hollow floor system according to claim 1 is characterized in that the height of the hollow mould top board (7) installed is not less than the height of reinforcing bar rib (2).
3. prefabricated steel rib bottom plate-concrete overlapped hollow floor system according to claim 1 is characterized in that hollow mould top board reinforcing bar (9) can weld with vertical shaped steel rib (2) welding or part.
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| CN200910226725A CN101831976A (en) | 2009-12-24 | 2009-12-24 | Prefabricated steel rib bottom plate-concrete overlapped hollow floor system |
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| CN200910226725A CN101831976A (en) | 2009-12-24 | 2009-12-24 | Prefabricated steel rib bottom plate-concrete overlapped hollow floor system |
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| CN102002999A (en) * | 2010-10-26 | 2011-04-06 | 吴方伯 | Reinforced concrete superimposed hollow floor system |
| CN102477781A (en) * | 2010-11-22 | 2012-05-30 | 初明进 | Assembled integral type steel-concrete superposed member and manufacturing method thereof |
| CN102995804A (en) * | 2012-12-27 | 2013-03-27 | 沈阳易筑建材经销有限公司 | Method for effectively reducing self-weight of prefabricated composite floor slab |
| CN102995807A (en) * | 2012-12-27 | 2013-03-27 | 沈阳易筑建材经销有限公司 | Assembled supporting-free prefabricated light composite floor slab with ribs |
| CN103031952A (en) * | 2012-12-27 | 2013-04-10 | 沈阳易筑建材经销有限公司 | Manufacturing method of fabricated support-free prefabricated ribbed light superposed floor slab |
| CN103352530A (en) * | 2013-07-25 | 2013-10-16 | 湖北弘毅建筑装饰工程有限公司 | Section steel plate rib concrete composite floor slab |
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| CN105442734A (en) * | 2014-09-26 | 2016-03-30 | 齐齐哈尔大学 | Self-supporting type bearing slab with light-weight aggregate concrete superimposed on reinforcement and high-strength concrete combined cross girder |
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| CN102477781A (en) * | 2010-11-22 | 2012-05-30 | 初明进 | Assembled integral type steel-concrete superposed member and manufacturing method thereof |
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| CN105442734A (en) * | 2014-09-26 | 2016-03-30 | 齐齐哈尔大学 | Self-supporting type bearing slab with light-weight aggregate concrete superimposed on reinforcement and high-strength concrete combined cross girder |
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| CN106013567A (en) * | 2016-06-08 | 2016-10-12 | 湖南标迪夫节能科技有限公司 | Fabricated stressed island reinforced concrete cavity floor system |
| CN106049733A (en) * | 2016-07-15 | 2016-10-26 | 中国矿业大学 | Honeycomb pore profiled steel sheet overlapped hollow floor slab |
| CN106049733B (en) * | 2016-07-15 | 2019-09-13 | 中国矿业大学 | A composite hollow floor slab with honeycomb hole profiled steel plate |
| CN106088434A (en) * | 2016-08-25 | 2016-11-09 | 中冶建筑研究总院有限公司 | A kind of assembling type steel structure overlapped hollow floor system and construction method thereof |
| CN106149882A (en) * | 2016-08-25 | 2016-11-23 | 中冶建筑研究总院有限公司 | A kind of lateral resisting and antigravity separate steel structure of housing system and construction method thereof |
| CN106567487A (en) * | 2016-09-30 | 2017-04-19 | 长沙远大住宅工业集团股份有限公司 | Fabricated concrete hollow floor structural system |
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| CN107152113A (en) * | 2017-05-22 | 2017-09-12 | 郎佃富 | A kind of steel reinforced concrete hollow floor |
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| CN107327071A (en) * | 2017-07-18 | 2017-11-07 | 周新亚 | A kind of large-span concrete plate |
| CN107338895A (en) * | 2017-08-21 | 2017-11-10 | 深圳市道同创新科技开发有限公司 | There are assembled hollow floor and its construction method of the girt strip with core |
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| CN107989247A (en) * | 2017-12-19 | 2018-05-04 | 广东省建筑设计研究院 | A kind of assembled overlapped hollow floor system and its construction method |
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Open date: 20100915 |