CN101586366A - Connecting structure and construction method of precast concrete plates and beams, and building comprising same - Google Patents
Connecting structure and construction method of precast concrete plates and beams, and building comprising same Download PDFInfo
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- CN101586366A CN101586366A CNA2008100673222A CN200810067322A CN101586366A CN 101586366 A CN101586366 A CN 101586366A CN A2008100673222 A CNA2008100673222 A CN A2008100673222A CN 200810067322 A CN200810067322 A CN 200810067322A CN 101586366 A CN101586366 A CN 101586366A
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Abstract
The invention relates to a connecting structure of precast concrete plates and beams. The precast concrete plate has a reinforced concrete structure, the end parts of the two precast concrete plates are respectively overlapped on both sides of the top surfaces of the beams, overlapping layers for connecting the beams and the precast concrete plates together are arranged above the precast concrete plates and the beams, and the overlapping layers are made of concrete cast on a construction site and internally comprise overlapping layer steel bars crossing the beams. The invention also relates to a construction method of the connecting structure, and a building comprising the connecting structure. The precast concrete beams and the precast concrete plates can form a unified body through the overlapping layers cast on the construction site, ensuring the safe reliability of the precast concrete beams and the precast concrete plates on stress. Cracking, malposition and other situations of the end parts of the precast concrete plates on plate and beam connecting parts can be prevented through reinforcing steel bars and the overlapping layer steel bars.
Description
Technical field
The present invention relates to building field, more particularly, relate to a kind of syndeton, job practices and building of precast concrete beam.
Background technology
Along with the develop rapidly of Chinese Urbanization's, urban population density is increasing, and people are urgent day by day to the demand of dwelling house, and high stratification, maximization and the complexity of building improve constantly.And traditional building is all finished by site operation (for example cast-in-place concrete frame, flooring etc.), not only has the construction quality risk that causes because of constructor's technical level, and has the lower problem of efficiency of construction.
The industrialization of construction industry production technology is meant each branch's member of building (for example post, beam, flooring etc.) is processed in factory's centralized production, carries out scene allocation and transportation assembling construction.Adopt the construction industry equalization, not only improved the efficient of building, and can at utmost improve structure precision, solve common quality defects such as wall crazing, seepage, improve building performance, reduce and use energy consumption and build energy consumption, the protection environment.
High-rise, super building dwelling house is many to be main with frame structure, and selecting the compound worker's method of precast concrete for use by position (pillar, beam, floor, balcony etc.) is a development trend.
The hollow precast floor slab technology of domestic in the past a large amount of appearance, every cassette ceiling structurally is independently in this technology, there is not cast-in-place overlapping layers, and with structural beams also be general bonding relation, cause between floor and the floor and between floor and the beam and can not form unified integral body, easily cracking, seepage and damage.
Summary of the invention
The technical problem to be solved in the present invention is, at the defective of above-mentioned precast concrete floor easy cracking, seepage and damage after construction, provides syndeton, job practices and the building of a kind of precast concrete plank and beam.
The technical solution adopted for the present invention to solve the technical problems is: the syndeton of constructing a kind of precast concrete plank and beam, described precast concrete plank has reinforced concrete structure, the end of two precast concrete planks is overlapped on the both sides of the end face of described beam respectively, the top of described precast concrete plank, the top of described beam have described beam and precast concrete plank linked and are that the overlapping layers of one, described overlapping layers are made of the concrete of building at the construction field (site) and comprise overlapping layers reinforcing bar across described beam in it.
In the syndeton of precast concrete plank of the present invention and beam, also comprise the many reinforcement reinforcing bars of building in the concrete of described overlapping layers perpendicular to described beam, the two ends of each described reinforcement reinforcing bar snap into the upper surface of precast concrete plank of the both sides of described beam respectively, the cross-sectional area sum of described many reinforcement reinforcing bars be not less than described precast concrete plank cross-sectional area 0.2%.
In the syndeton of precast concrete plank of the present invention and beam, described reinforcement reinforcing bar is not less than 30d in the size of each precast concrete plank upper surface.
In the syndeton of precast concrete plank of the present invention and beam, also comprise the many reinforcement reinforcing bars of building in the concrete of described overlapping layers perpendicular to described beam, one end of each described reinforcement reinforcing bar snaps into wherein that the upper surface and the other end of a precast concrete plank anchor in the beam, the cross-sectional area sum of described many reinforcement reinforcing bars be not less than described precast concrete plank cross-sectional area 0.2%.
In the syndeton of precast concrete plank of the present invention and beam, the size that the mode that described reinforcement reinforcing bar anchors into straight line or bending extends to beam top is not less than 10d and more than 150mm, described reinforcement reinforcing bar is not less than 30d in the size of precast concrete plank upper surface.
In the syndeton of precast concrete plank of the present invention and beam, the end of described precast concrete plank snaps into described beam and is of a size of 5-30mm.
In the syndeton of precast concrete plank of the present invention and beam, described overlapping layers reinforcing bar comprises is located at precast concrete plank top and perpendicular to the vertical upper end muscle of beam, the two ends of described vertical upper end muscle lay respectively at the top of two precast concrete planks.
In the syndeton of precast concrete plank of the present invention and beam, described precast concrete plank comprises girder rib, and described girder rib is by building lower edge muscle in precast concrete plank, building the muscle and the lattice muscle that the described muscle that winds up is secured to the lower edge muscle formed of winding up in described overlapping layers.
The present invention also provides the job practices of the syndeton of a kind of precast concrete plank and beam, and described precast concrete plank is made of reinforcing bar and concrete, comprising:
(a) two described precast concrete plank liftings are placed on the beam, the end of described two precast concrete planks is overlapped on the end face both sides of described beam respectively;
(b) the overlapping layers reinforcing bar is installed in the top of described precast concrete plank and beam, to the top of the described overlapping layers reinforcing bar of small part across described beam;
(c) above the described precast concrete plank and described beam above concreting.
The present invention also provides a kind of building of using above-mentioned syndeton, comprise door, window, and the precast concrete plank of at least two reinforced concrete structures, the end of described at least two precast concrete planks is overlapped on the both sides of the end face of described beam respectively, the top of described precast concrete plank, the top of described beam have described beam and precast concrete plank linked and are that the overlapping layers of one, described overlapping layers are made of the concrete of building at the construction field (site) and comprise overlapping layers reinforcing bar across described beam in it.
The syndeton of precast concrete plank of the present invention and beam, job practices and building, by the overlapping layers of building at the construction field (site), make precast concrete beam and precast concrete plank formation unified integral body, guaranteed safe and reliable on stressed of precast concrete beam and precast concrete plank.The present invention can prevent the generation of the end of precast concrete plank in situations such as plate-girder connecting portion cracking, dislocation also by reinforcement reinforcing bar and overlapping layers reinforcing bar.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the cross section structure schematic diagram of syndeton first embodiment of precast concrete plank of the present invention and beam;
Fig. 2 is the cross section structure schematic diagram of syndeton second embodiment of precast concrete plank of the present invention and beam.
The specific embodiment
The invention provides the syndeton of a kind of precast concrete plank and beam, precast concrete plank has reinforced concrete structure, the end of two precast concrete planks is overlapped on the both sides of the end face of beam respectively, wherein the top of the top of precast concrete plank, beam has Jiang Liang and two precast concrete planks and links and be that the overlapping layers of one, this overlapping layers are made of the concrete of building at the construction field (site) and comprise overlapping layers reinforcing bar across beam in it.By above-mentioned overlapping layers, make beam and precast concrete plank form unified integral body, guaranteed safe and reliable on stressed of beam and precast concrete plank.
As shown in Figure 1, be the cross section structure schematic diagram of syndeton first embodiment of precast concrete plank of the present invention and beam.In this syndeton; the end of two precast concrete planks 12 is overlapped on both sides (for example concrete side wall protective layer of the end face of beam 11 respectively; or the installation site that cooperates with the end of precast concrete plank), above the precast concrete plank 12, beam 11 above have beam 11 and two precast concrete planks 12 are linked and be the overlapping layers 13 of one.Overlapping layers is made of the concrete of building at the construction field (site), and comprises the overlapping layers reinforcing bar across beam 11 tops in the overlapping layers 13.The upper surface of above-mentioned overlapping layers 13 has promptly constituted the floor level of level.
In the present embodiment, beam 11 is precast units of reinforced concrete structure, comprises lower end master's muscle (not shown) of building in precast concrete, is positioned at the main muscle 112 in upper end of precast concrete top and part and is embedded in the stirrup 111 that precast concrete and part are positioned at the precast concrete top.It is that the above beam limit reinforcement cover of 25mm (is the distance of edge stirrup 111 to the beam of precast concrete beam 11 that the beam 11 of this precast concrete has width; the best is 50mm); the end of precast concrete plank 12 is overlapped on the above-mentioned topping; usually its edge that enters precast concrete beam 11 is of a size of 5-30mm, and the best is 20mm.When constructing at the scene, the part of exposing the precast concrete beam upper surface of main muscle 112 in the upper end of above-mentioned beam 11 and stirrup 111 builds in overlapping layers 13.
Intensity for the syndeton that increases plate and beam, in overlapping layers 13, the overlapping layers reinforcing bar of being located at precast concrete plank 11 tops comprises perpendicular to the vertical upper end muscle 15 of beam 11 length directions and the vertical upper end muscle 16 that is parallel to beam 11 length directions, the two ends of wherein vertical upper end muscle 15 lay respectively at the top of two precast concrete planks 12, thereby across the top of beam 11.The size that vertical upper end muscle 15 is positioned at each precast concrete plank 12 top is not less than 30d (from Liang Bianji).Certainly, the direction of above-mentioned vertical upper end muscle 15 and vertical upper end muscle 16 also can suitably change, and does not influence the quality of overlapping layers.
In addition, in order further to increase the intensity of the syndeton of plate and beam, the end of avoiding precast concrete plank 12 in overlapping layers 13, also can be included in many reinforcement reinforcing bars 19 that are provided with before building in plate-girder connecting portion cracking, dislocation.This reinforcement reinforcing bar 19 (can certainly have the inclination of certain angle in the mode perpendicular to the length direction of precast concrete beam 11, degree for example+/-30) be arranged at the upper surface of precast concrete plank 12, and two end is overlapped on the upper surface of two precast concrete planks 12 respectively.For in order to be effective, the diameter of reinforcement reinforcing bar 19 and spacing generally are not less than the interior reinforcing bar of plate of the precast concrete 12 that cuts off in the same way, and total cross-sectional area of reinforcement reinforcing bar 19 is more than 0.2% of cross-sectional area of precast concrete plank 12.In addition, the reinforcement reinforcing bar 19 size d1 that is positioned at each precast concrete plank 12 top is not less than 30d (from Liang Bianji).
As shown in Figure 2, be the schematic cross-section of the syndeton of another side of precast concrete plank 12 and another precast concrete beam 11.Similarly, this plate-girder syndeton comprises the iterative structure layer 13 that the concrete by cast in situs constitutes.
For the intensity of the syndeton that increases plate and beam, the same with the embodiment of Fig. 1, many reinforcement reinforcing bars 20 perpendicular to beam 11 can be set in overlapping layers 13.Different with the embodiment of Fig. 1, an end of each above-mentioned reinforcement reinforcing bar 20 snaps into wherein that the upper surface and the other end of a precast concrete plank 12 anchor in the beam 11.The quantity that is overlapped on two blocks of reinforcement reinforcing bars on the precast concrete plank 12 is basic identical, and the cross-sectional area sum of these many reinforcement reinforcing bars 20 be not less than precast concrete plank 12 cross-sectional area 0.2%.For ensuring the quality of products, the size d3 that the mode that reinforcement reinforcing bar 20 anchors into straight line or bending extends to the beam top is not less than 10d and more than 150mm, and this reinforcement reinforcing bar 20 is not less than 30d at the size d2 of precast concrete plank 12 upper surfaces.
Precast concrete plank in above-mentioned syndeton also can comprise girder rib, and this girder rib is by building lower edge muscle in precast concrete plank, building the lattice muscle that wind up muscle and the muscle that will wind up in described overlapping layers be secured to the lower edge muscle and form.Overlapping layers reinforcing bar 15,16 can be fixed to the muscle that winds up of girder rib, to strengthen precast concrete plank and the integraty of precast concrete beam after being connected.
The syndeton of above-mentioned plate and beam can be constructed in the following manner: at first two precast concrete plank liftings are placed on the beam, the end of these two precast concrete planks is overlapped on the end face both sides (or the installation site that cooperates with the end of precast concrete plank) of beam respectively; Then the overlapping layers reinforcing bar is installed in the top of precast concrete plank and beam, to the top of small part overlapping layers reinforcing bar across beam; At last above the precast concrete plank and beam above concreting form overlapping layers.
Intensity for the syndeton that increases plate and beam, when the overlapping layers reinforcing bar is installed, can increase the reinforcement reinforcing bar, this reinforcement reinforcing bar is erected at two ends that the mode of two precast concrete plank upper surfaces or an end are overlapped on the precast concrete beam upper surface and mode that the other end anchors in the beam is provided with.
Above-mentioned syndeton and method are equally applicable to the beam of cast in situs and being connected of precast concrete plank, and its implementation is basic identical, and only are to use the precast concrete beam that assembles in the beam replacement said structure of cast in situs.Certainly, above-mentioned beam also can steel concrete be built and is formed, and also can be the crossbeam that girder steel or other any materials are made.
The syndeton of above-mentioned precast concrete plank and beam can be widely used in the various buildings that comprise floor and beam.Than traditional architecture, the building that comprises above-mentioned syndeton can realize prefabricated production beam of batch production and plate, and splice at the construction field (site), thereby has guaranteed the construction standardization of beam, plate, syndeton, can greatly improve construction working efficient, reduce the wasting of resources.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1, the syndeton of a kind of precast concrete plank and beam, described precast concrete plank has reinforced concrete structure, it is characterized in that, the end of two precast concrete planks is overlapped on the both sides of the end face of described beam respectively, the top of described precast concrete plank, the top of described beam have described beam and precast concrete plank linked and are that the overlapping layers of one, described overlapping layers are made of the concrete of building at the construction field (site) and comprise overlapping layers reinforcing bar across described beam in it.
2, the syndeton of precast concrete plank according to claim 1 and beam, it is characterized in that, also comprise the many reinforcement reinforcing bars of building in the concrete of described overlapping layers perpendicular to described beam, the two ends of each described reinforcement reinforcing bar snap into the upper surface of precast concrete plank of the both sides of described beam respectively, the cross-sectional area sum of described many reinforcement reinforcing bars be not less than described precast concrete plank cross-sectional area 0.2%.
3, the syndeton of precast concrete plank according to claim 2 and beam is characterized in that, described reinforcement reinforcing bar is not less than 30d in the size of each precast concrete plank upper surface.
4, the syndeton of precast concrete plank according to claim 1 and beam, it is characterized in that, also comprise the many reinforcement reinforcing bars of building in the concrete of described overlapping layers perpendicular to described beam, one end of each described reinforcement reinforcing bar snaps into wherein that the upper surface and the other end of a precast concrete plank anchor in the beam, the cross-sectional area sum of described many reinforcement reinforcing bars be not less than described precast concrete plank cross-sectional area 0.2%.
5, the syndeton of precast concrete plank according to claim 4 and beam, it is characterized in that, the size that the mode that described reinforcement reinforcing bar anchors into straight line or bending extends to beam top is not less than 10d and more than 150mm, described reinforcement reinforcing bar is not less than 30d in the size of precast concrete plank upper surface.
6, according to the syndeton of each described precast concrete plank and beam among the claim 1-5, it is characterized in that the end of described precast concrete plank snaps into described beam and is of a size of 5-30mm.
7, the syndeton of precast concrete plank according to claim 1 and beam, it is characterized in that, described overlapping layers reinforcing bar comprises is located at precast concrete plank top and perpendicular to the vertical upper end muscle of beam, the two ends of described vertical upper end muscle lay respectively at the top of two precast concrete planks.
8, the syndeton of precast concrete plank according to claim 7 and beam, it is characterized in that, described precast concrete plank comprises girder rib, and described girder rib is by building lower edge muscle in precast concrete plank, building the muscle and the lattice muscle that the described muscle that winds up is secured to the lower edge muscle formed of winding up in described overlapping layers.
9, the job practices of the syndeton of a kind of precast concrete plank and beam, described precast concrete plank is made of reinforcing bar and concrete, it is characterized in that, comprising:
(a) two described precast concrete plank liftings are placed on the beam, the end of described two precast concrete planks is overlapped on the end face both sides of described beam respectively;
(b) the overlapping layers reinforcing bar is installed in the top of described precast concrete plank and beam, to the top of the described overlapping layers reinforcing bar of small part across described beam;
(c) above the described precast concrete plank and described beam above concreting.
10, a kind of building of using the described syndeton of claim 1, comprise door, window, and the precast concrete plank of at least two reinforced concrete structures, it is characterized in that, the end of described at least two precast concrete planks is overlapped on the both sides of the end face of described beam respectively, the top of described precast concrete plank, the top of described beam have described beam and precast concrete plank linked and are that the overlapping layers of one, described overlapping layers are made of the concrete of building at the construction field (site) and comprise overlapping layers reinforcing bar across described beam in it.
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| CN2008100673222A CN101586366B (en) | 2008-05-21 | 2008-05-21 | Connecting structure and construction method of precast concrete plates and beams, and building comprising same |
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| CN2008100673222A CN101586366B (en) | 2008-05-21 | 2008-05-21 | Connecting structure and construction method of precast concrete plates and beams, and building comprising same |
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| CN101586366A true CN101586366A (en) | 2009-11-25 |
| CN101586366B CN101586366B (en) | 2011-04-20 |
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| CN102433959A (en) * | 2011-08-30 | 2012-05-02 | 张吉华 | Prefabricated reinforced concrete structure girder for fabricated building construction |
| CN102535639A (en) * | 2011-12-26 | 2012-07-04 | 中国矿业大学 | Connection method for reinforcing joints between pre-fabricated hollow slabs and horizontal beam by embedding steel reinforcements |
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| CN102433959A (en) * | 2011-08-30 | 2012-05-02 | 张吉华 | Prefabricated reinforced concrete structure girder for fabricated building construction |
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| CN113027024B (en) * | 2019-12-23 | 2022-12-13 | 浙江省建筑设计研究院 | Prefabricated concrete structure floor system structure and construction method |
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