CN109610707B - Assembly structure with parallel and level prefabricated steel beams and floor slab and rapid construction method - Google Patents
Assembly structure with parallel and level prefabricated steel beams and floor slab and rapid construction method Download PDFInfo
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- CN109610707B CN109610707B CN201811519440.2A CN201811519440A CN109610707B CN 109610707 B CN109610707 B CN 109610707B CN 201811519440 A CN201811519440 A CN 201811519440A CN 109610707 B CN109610707 B CN 109610707B
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- prefabricated
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- floor slab
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/14—Load-carrying floor structures formed substantially of prefabricated units with beams or girders laid in two directions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/023—Separate connecting devices for prefabricated floor-slabs
Abstract
The invention discloses an assembly structure with a prefabricated steel beam and a floor slab being flush and a rapid construction method. The upper flange of the prefabricated steel beam is in a shape like a Chinese character 'ji', and consists of a horizontal flange, a vertical flange and a top flange; the horizontal flange is provided with a stiffening rib for enhancing the bearing capacity of the beam and preventing the beam from locally deforming and a stud for fixing the floor slab; the studs are prefabricated on the inner sides of the vertical flanges and concrete is precast in a factory and used for restraining deformation of the upper flanges. The floor form is not limited, and the floor and the prefabricated section steel beam are connected together through the welding stud for sleeving the upper flange of the prefabricated section steel beam by the prefabricated steel bar ring in the floor. The invention skillfully realizes the flush design of the prefabricated steel beam and the floor slab, avoids on-site welding, and has the advantages of high space utilization rate, good construction quality and the like; when the prefabricated assembled concrete floor slab or the steel plate concrete composite floor slab is used, a site formwork is not required to be erected and a scaffold is not required to be erected, and the method has the advantages of high construction speed and the like.
Description
Technical Field
The invention relates to a design and rapid construction method for flush assembly of a prefabricated assembled beam and a floor slab applied to a building engineering structure, which is particularly suitable for building engineering with difficult field welding and higher requirement on space height.
Background
In a building engineering structure, a connection method of a prefabricated steel beam and a floor slab is of great importance, and space utilization, construction progress and engineering cost are directly related. At present, most of the fabricated beam-slab connection modes in China are that slabs are built above beams in different modes, so that the construction of a floor system is completed, the space utilization rate is reduced to a certain extent, and the requirement that the upper planes of a floor slab and a steel beam are flush is provided for certain building engineering of the Shanghai beach. In addition, the existing fabricated floor slab connection method mostly has a large amount of field welding, field formwork erecting, scaffold erecting and the like, so that the construction quality is easily influenced, and the construction progress is slow.
Therefore, a new design of the parallel and level of the precast steel beam and the floor slab and a rapid construction method thereof are needed to improve the space utilization rate, shorten the construction time and the like. Based on the design, the invention provides a novel design for assembling the prefabricated steel beam and the floor slab in a flush manner and a rapid construction method thereof, so that the floor slab and the top surface of the steel beam are in a flush manner, the field welding can be avoided, and the invention has the advantages of high space utilization rate, more controllable construction quality and the like; when the prefabricated assembled concrete floor slab or the steel plate concrete composite floor slab is used, a site formwork is not required to be erected and a scaffold is not required to be erected, and the method has the advantages of high construction speed and the like.
Disclosure of Invention
The invention provides an assembly structure with a prefabricated steel beam and a floor slab which are parallel and level and a rapid construction method; the beam-slab system has the advantages of high space utilization rate, no construction, high speed, on-site welding requirement, convenience in installation and the like.
The technical scheme of the invention is as follows:
an assembly structure with a prefabricated steel beam and a floor slab which are parallel and level is mainly designed aiming at a prefabricated assembly type beam-slab substructure, wherein the prefabricated assembly type beam-slab substructure comprises a reinforced concrete floor slab 1, prefabricated section steel beams 2 and cast-in-place concrete 3 between beam slabs;
the end of part of the steel bars at the end part of the reinforced concrete floor slab 1 is provided with a steel bar prefabricated ring 4 which is used for connecting a vertical pre-welding stud 5 of the prefabricated steel beam 2;
the upper flange of the prefabricated section steel beam 2 is in a shape like a Chinese character 'ji', and consists of a horizontal flange 6, a vertical flange 7 and a top flange 8, wherein the height of the vertical flange 7 is the same as the thickness of the reinforced concrete floor slab 1; the beam stiffening ribs 9 are arranged on the horizontal flanges 6 and used for improving the rigidity and the bearing capacity of the horizontal flanges 6 and preventing the horizontal flanges 6 from local deformation; meanwhile, vertical pre-welding studs 5 are welded on the horizontal flanges 6, and the positions of the vertical pre-welding studs 5 correspond to the reinforcement prefabricated circular rings 4 at the end parts of the reinforced concrete floor slab 1 one by one; the inner space formed by the vertical flange 7 and the top flange 8 is poured with flange inner side concrete 10 for preventing the flanges from deforming under the compression state; the horizontal prewelding stud 11 is arranged on the inner side of the vertical flange 7 and used for fixing the concrete 10 on the inner side of the flange and preventing the concrete from falling off.
A rapid construction method for assembling a prefabricated steel beam and a floor slab in a flush manner comprises the following steps when the floor slab is a reinforced concrete floor slab:
firstly, prefabricating a reinforced concrete floor slab 1 in a factory, and arranging a prefabricated ring 4 at the end of part of reinforcing steel bars at the end part of the reinforced concrete floor slab;
step two, prefabricating the section steel beam 2 in a factory, arranging vertical pre-welding studs 5 and stiffening ribs 9 on a horizontal flange 6 of the section steel beam, wherein the positions of the vertical pre-welding studs 5 correspond to the steel bar prefabricated circular rings 4 at the end part of the reinforced concrete floor slab 1 one by one; a horizontal pre-welding stud 11 is welded on the inner side of the vertical flange 7;
step three, inverting the prefabricated steel beam 2, and pouring the concrete 10 on the inner side of the flange in a factory by taking the vertical flange 7 and the top flange 8 of the prefabricated steel beam as templates, wherein the horizontal prewelding studs 11 are used for fixing the concrete 10 on the inner side of the flange;
fourthly, assembling on site, namely building the reinforced concrete floor slabs 1 on horizontal flanges 6 of the prefabricated steel beams 2, and enabling the steel bar prefabricated circular rings 4 on the reinforced concrete floor slabs 1 to be sleeved on the vertical pre-welding studs 5 in a one-to-one correspondence mode;
and fifthly, taking the horizontal flange 6 and the vertical flange 7 of the prefabricated section steel beam 2 and the side surface of the reinforced concrete floor slab 1 as templates, and pouring concrete 3 in situ at the gap between the prefabricated section steel beam 2 and the reinforced concrete floor slab 1 to complete the construction of the beam slab structure.
The floor is not limited to the prefabricated reinforced concrete floor 1, when the floor is a cast-in-place floor in other forms, if a scaffold and a formwork are allowed to be built on site, the steel bar prefabricated circular rings 4 at the end parts of the floor are sleeved on the vertical pre-welded studs 5 in a one-to-one correspondence mode during floor steel bar construction after formwork erection, and then concrete is poured on site; if no scaffold is built on site, the steel plate concrete composite floor slab is used, namely, the steel plate or profiled steel plate end part is welded with the steel bar prefabricated ring 4 in advance in a factory, the steel bar prefabricated ring 4 at the steel plate end part is sleeved on the vertical pre-welded stud 5 of the prefabricated section steel beam 2 during on-site assembly, and then the steel plate is used as a template for on-site concrete pouring.
The invention has the beneficial effects that compared with the prior art, the method for assembling the precast steel beam and the floor slab in a flush manner, which is provided by the invention, comprises the following steps: (1) the bearing capacity requirement of the beam plate can be met, and the space utilization rate of the building can be improved; (2) the beam and the plate can be prefabricated in a factory, and can be constructed by assembling and pouring a small amount of concrete on site, so that the scaffold and the formwork are avoided from being erected, the rapid construction is realized, and the construction time is greatly saved; (3) the invention avoids on-site welding and can better ensure the construction quality.
Drawings
Fig. 1 is a schematic view of the prefabricated assembled beam and slab of the present invention in a state of being cast in place by a small amount.
Fig. 2 is a schematic diagram of the prefabricated assembled beam and slab structure of the invention after the construction is completed.
Fig. 3 is a schematic view of the prefabricated steel section beam of the present invention before concrete is poured in a factory.
Fig. 4 is a schematic view of the prefabricated steel section beam after concrete is poured in a factory.
Fig. 5 is a schematic view of the prefabricated reinforced concrete floor and the prefabricated steel bar rings at the end thereof according to the present invention.
Fig. 6 is a schematic view of the present invention before concrete is cast in situ when a steel plate is used as a form for casting a steel plate-concrete composite floor.
In the figure: 1, a reinforced concrete floor slab; 2, prefabricating the section steel beam; 3, concrete; 4, prefabricating a circular ring by using reinforcing steel bars; 5, vertically pre-welding studs; 6, horizontal flanges; 7 vertical flanges; 8, top flange; 9 beam stiffeners; 10 beam flange inner side concrete; 11, pre-welding studs in the horizontal direction; 12 when the floor slab is a steel plate concrete composite floor slab.
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, the technical solution of the present invention is described in detail below with reference to the following drawings, taking a prefabricated reinforced concrete floor slab as an example:
as shown in fig. 1 to 5, a steel bar prefabricated ring 4 is arranged at the end of a part of steel bars at the end part of a reinforced concrete floor slab 1 and is used for connecting vertical pre-welded studs 5 of a prefabricated section steel beam 2; the upper flange of the prefabricated section steel beam 2 is in a shape like a Chinese character 'ji', and consists of a horizontal flange 6, a vertical flange 7 and a top flange 8, wherein the height of the vertical flange 7 is the same as the thickness of the reinforced concrete floor slab 1; the beam stiffening ribs 9 are arranged on the horizontal flanges 6 and used for improving the rigidity and the bearing capacity of the horizontal flanges 6 and preventing the horizontal flanges 6 from local deformation; meanwhile, vertical pre-welding studs 5 are welded on the horizontal flanges 6, and the positions of the vertical pre-welding studs 5 correspond to the reinforcement prefabricated circular rings 4 at the end parts of the reinforced concrete floor slab 1 one by one; the inner space formed by the vertical flange 7 and the top flange 8 is poured with flange inner side concrete 10 for preventing the flanges from deforming under the compression state; the horizontal prewelding stud 11 is arranged on the inner side of the vertical flange 7 and used for fixing the concrete 10 on the inner side of the flange and preventing the concrete from falling off.
The construction is carried out according to the following steps:
firstly, prefabricating a reinforced concrete floor slab 1 in a factory, and arranging a prefabricated ring 4 at the end of part of reinforcing steel bars at the end part of the reinforced concrete floor slab;
step two, prefabricating the section steel beam 2 in a factory, arranging vertical pre-welding studs 5 and stiffening ribs 9 on a horizontal flange 6 of the section steel beam, wherein the positions of the vertical pre-welding studs 5 correspond to the steel bar prefabricated circular rings 4 at the end part of the reinforced concrete floor slab 1 one by one; a horizontal pre-welding stud 11 is welded on the inner side of the vertical flange 7;
step three, inverting the prefabricated steel beam 2, and pouring the concrete 10 on the inner side of the flange in a factory by taking the vertical flange 7 and the top flange 8 of the prefabricated steel beam as templates, wherein the horizontal prewelding studs 11 are used for fixing the concrete 10 on the inner side of the flange;
fourthly, assembling on site, namely building the reinforced concrete floor slabs 1 on horizontal flanges 6 of the prefabricated steel beams 2, and enabling the steel bar prefabricated circular rings 4 on the reinforced concrete floor slabs 1 to be sleeved on the vertical pre-welding studs 5 in a one-to-one correspondence mode;
and fifthly, taking the horizontal flange 6 and the vertical flange 7 of the prefabricated section steel beam 2 and the side surface of the reinforced concrete floor slab 1 as templates, and pouring concrete 3 in situ at the gap between the prefabricated section steel beam 2 and the reinforced concrete floor slab 1 to complete the construction of the beam slab structure.
Claims (3)
1. An assembly structure with a prefabricated steel beam and a floor slab which are parallel and level is characterized by comprising a reinforced concrete floor slab (1), prefabricated steel beams (2) and cast-in-place concrete (3) among beam slabs;
the end of part of the steel bars at the end part of the reinforced concrete floor (1) is provided with a steel bar prefabricated ring (4) for connecting vertical pre-welded studs (5) of the prefabricated steel beam (2);
the upper flange of the prefabricated section steel beam (2) is in a shape like a Chinese character 'ji', and consists of a horizontal flange (6), a vertical flange (7) and a top flange (8), wherein the height of the vertical flange (7) is the same as the thickness of the reinforced concrete floor slab (1); beam stiffening ribs (9) are arranged on the horizontal flanges (6) and used for improving the rigidity and the bearing capacity of the horizontal flanges (6) and preventing the horizontal flanges (6) from local deformation; meanwhile, vertical pre-welding studs (5) are welded on the horizontal flanges (6), and the positions of the vertical pre-welding studs (5) correspond to the reinforcement prefabricated circular rings (4) at the end parts of the reinforced concrete floor (1) one by one; the inner space formed by the vertical flange (7) and the top flange (8) is poured with flange inner side concrete (10) for preventing the flanges from deforming under the compression state; the horizontal prewelding stud (11) is arranged on the inner side of the vertical flange (7) and used for fixing the concrete (10) on the inner side of the flange and preventing the concrete from falling off.
2. The rapid construction method of an assembly structure in which a precast steel girder is flush with a floor slab as claimed in claim 1, when the floor slab is a precast reinforced concrete floor slab, comprising the steps of:
firstly, prefabricating a reinforced concrete floor (1) in a factory, and arranging a prefabricated circular ring (4) at the end of part of reinforcing steel bars at the end part of the reinforced concrete floor;
step two, prefabricating the section steel beam (2) in a factory, arranging vertical pre-welding studs (5) and stiffening ribs (9) on a horizontal flange (6) of the section steel beam, wherein the positions of the vertical pre-welding studs (5) correspond to the reinforced concrete floor (1) at the end part of the reinforced concrete floor (4) one by one; a horizontal pre-welding stud (11) is welded on the inner side of the vertical flange (7);
step three, inverting the prefabricated section steel beam (2), and pouring flange inner side concrete (10) in a factory by taking a vertical flange (7) and a top flange (8) of the prefabricated section steel beam as templates, wherein the horizontal pre-welding studs (11) are used for fixing the flange inner side concrete (10);
fourthly, on-site assembly, namely building the reinforced concrete floor (1) on a horizontal flange (6) of the prefabricated section steel beam (2), and sleeving the steel bar prefabricated circular rings (4) on the reinforced concrete floor (1) on the vertical pre-welded studs (5) in a one-to-one correspondence manner;
and fifthly, taking the horizontal flange (6) and the vertical flange (7) of the prefabricated section steel beam (2) and the side surface of the reinforced concrete floor slab (1) as a template, and pouring concrete (3) in the gap between the prefabricated section steel beam (2) and the reinforced concrete floor slab (1) on site to complete the construction of the beam slab structure.
3. The rapid construction method according to claim 2, wherein the reinforced concrete floor (1) is not limited to a prefabricated reinforced concrete floor, when the floor is a cast-in-place floor of other forms, if scaffolding and formwork erection are allowed on site, the steel reinforcement prefabricated rings (4) at the end parts of the floor are sleeved on the vertical prewelded studs (5) in a one-to-one correspondence manner after formwork erection and then concrete is poured on site; if no scaffold is built on site, the steel plate concrete composite floor slab is used, namely, the steel plate or profiled steel plate end part is welded with the steel bar prefabricated ring (4) in advance in a factory, the steel bar prefabricated ring (4) at the steel plate end part is sleeved on the vertical pre-welded stud (5) of the prefabricated section steel beam (2) during on-site assembly, and then the steel plate is used as a template for casting concrete on site.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811519440.2A CN109610707B (en) | 2018-12-12 | 2018-12-12 | Assembly structure with parallel and level prefabricated steel beams and floor slab and rapid construction method |
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| CN201811519440.2A CN109610707B (en) | 2018-12-12 | 2018-12-12 | Assembly structure with parallel and level prefabricated steel beams and floor slab and rapid construction method |
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| CN109610707A CN109610707A (en) | 2019-04-12 |
| CN109610707B true CN109610707B (en) | 2020-10-20 |
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| CN110107006B (en) * | 2019-05-05 | 2020-10-16 | 湘潭大学 | Large-span composite structure floor system |
| CN111502033A (en) * | 2020-05-06 | 2020-08-07 | 无锡锡晟建设有限公司 | Quick mounting structure of full-prefabricated high strength PC floor and girder steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS52101822A (en) * | 1976-02-21 | 1977-08-26 | Kumagai Gumi Co Ltd | Complex concrete floor molding method and complex concrete floor device by means of i beam and corrugated deck plate |
| DE102005011817B4 (en) * | 2005-03-15 | 2007-12-13 | Werner Averkamp | Ceiling structure with filled or covered cavities |
| JP5155776B2 (en) * | 2008-08-26 | 2013-03-06 | 大成建設株式会社 | Composite beam |
| WO2010053220A1 (en) * | 2008-11-07 | 2010-05-14 | Korea Institute Of Construction Technology | Formed steel beam for steel-concrete composite beam and slab |
| CN202200393U (en) * | 2011-08-01 | 2012-04-25 | 河北路桥集团有限公司 | Combined steel structure base and modules thereof |
| CN105089204A (en) * | 2015-05-12 | 2015-11-25 | 重庆大学 | Cold-formed thin-walled ribbed U-shaped steel-encased concrete laminated slab composite beam |
| CN106284047A (en) * | 2016-08-04 | 2017-01-04 | 浙江工业大学 | Steel concrete combined bridge beam slab |
| CN107152088B (en) * | 2017-03-30 | 2020-08-18 | 西京学院 | Prefabricated double-dovetail type steel-concrete combined beam connected by adopting studs |
| CN206859427U (en) * | 2017-06-14 | 2018-01-09 | 广州大学 | A kind of attachment structure of Fabricated Beam-Slab system |
| CN108385884A (en) * | 2018-02-12 | 2018-08-10 | 北京工业大学 | A kind of bolted and welded connection steel reinforced concrete special-shape column-stealth beam floor assembly system |
| CN108360721B (en) * | 2018-03-03 | 2020-04-14 | 北京工业大学 | Prefabricated concrete ultra-thin type bidirectional stress assembly type steel bar truss composite floor slab |
| CN108360723B (en) * | 2018-03-03 | 2020-03-13 | 北京工业大学 | Assembly type large module semi-welded superposed beam plate structure with stereo truss temporary support |
| CN108412100A (en) * | 2018-06-11 | 2018-08-17 | 青岛理工大学 | A kind of assembly sunk type floor and its connecting structure entirely |
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