CN108643429B - But height-adjusting's assembled coincide floor - Google Patents

But height-adjusting's assembled coincide floor Download PDF

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Publication number
CN108643429B
CN108643429B CN201810499367.0A CN201810499367A CN108643429B CN 108643429 B CN108643429 B CN 108643429B CN 201810499367 A CN201810499367 A CN 201810499367A CN 108643429 B CN108643429 B CN 108643429B
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China
Prior art keywords
steel
floor slab
height
slab
nut
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CN201810499367.0A
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Chinese (zh)
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CN108643429A (en
Inventor
刘学春
崔付园
强申
朱涛
王小青
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Beijing University of Technology
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Beijing University of Technology
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17Floor structures partly formed in situ

Abstract

An adjustable height assembled composite floor slab comprises angle steel, a steel bar truss, an L-shaped screw rod, concrete and nuts. The angle steel, the concrete and the steel bar truss are poured together to form a member A1, and a hole is reserved in the member A1 when the angle steel is poured at the corresponding position of the opening of the angle steel. The prefabricated slab is manufactured in a factory and is assembled on site in a hoisting mode. The cross rod of the L-shaped screw rod is hung on the upper surface of the steel beam, and the vertical rod passes through the hole on the component A1 and is screwed down through the nut. After hoisting, the height of the prefabricated slab can be adjusted by adjusting the nuts on the L-shaped lead screws, the relative position of the floor slabs and the steel beams is adjusted, and the surface of each floor slab is ensured to be flush. The connecting mode has the advantages that part of the beam height is hidden, and the spatial arrangement of the structure is more flexible and attractive. The steel bar trusses in the member A1 enhance the binding power of new and old concrete layers and improve the overall performance of the laminated floor slab. The component A1 and the beam are hoisted on site through the L-shaped lead screw and the nut, and the assembly type building method is in accordance with the idea of assembly type buildings.

Description

But height-adjusting's assembled coincide floor
Technical Field
The invention belongs to the field of building structural members, and is suitable for assembly type steel structure buildings.
Background
Under the condition that the steel yield is greatly surplus every year in China, a series of policy guidelines for promoting the use of steel in building structures are carried out by the country, and the steel structure buildings are vigorously developed. The steel structure is developed rapidly by virtue of the advantages of light dead weight, good plasticity and toughness, good earthquake resistance and the like, and the produced assembled steel structure system has the advantages of high construction speed, less construction pollution, easy quality guarantee and the like, is a green building, is suitable for the development of the building industry in China, and enables the building industry in China to return to industrialization.
The precast concrete composite floor slab is an assembled integral floor slab formed by laminating a permanent template with the bottom of which is 5-8 cm thick by adopting a precast concrete thin plate and an upper cast-in-place layer, has the advantages of good integrity, large rigidity, good crack resistance, no increase of reinforcing steel bar consumption, template saving and the like of the cast-in-place floor slab, can be constructed in a precast assembly mode to the maximum extent, represents the development direction of national building industrialization, and has the following defects in the existing precast concrete composite floor slab:
1) the superimposed floor is placed on the beam through the studs or bolts welded on the upper flange of the beam, the whole beam height is exposed outside, the net height of the structural layer is reduced, and the attractiveness is influenced.
2) The laminated floor slab is hoisted in blocks, and the surface of the floor slab is not parallel and level after hoisting is easy to occur.
The invention provides a novel assembly type composite floor slab form aiming at the defects by combining the existing composite floor slab form. After hoisting, the height position of the precast slab is adjusted before the post-cast layer is poured, and the surface of each floor slab is ensured to be level after hoisting; the suspension effect of the L-shaped screw rod is utilized to 'hide' part of the beam height, so that the net height of the structural layer is increased, the integrity of the floor slab and the beam is enhanced, unnecessary material waste is reduced, and the spatial arrangement of the structure is more flexible and attractive; the truss-shaped steel bars in the prefabricated slabs not only enhance the bonding force of the new and old pouring layers of the laminated floor slabs and improve the shearing resistance of the floor slabs, but also facilitate pipeline burying and avoid secondary hole opening.
Disclosure of Invention
The invention provides an assembly type composite floor slab form, which aims to overcome the technical defects of the existing composite floor slab, improve the assembly precision of a component and enlarge the application range of the component while ensuring the safety and reliability of the structure.
The technical scheme of the invention is as follows:
1. the utility model provides a but height-adjusting's assembled coincide floor which characterized in that: the composite floor slab comprises: the steel angle fixing device comprises angle steel 1, a steel bar truss 2, an L-shaped screw rod 3, concrete 4 and a nut 5;
2. the angle steel 1 is placed at the bottoms of the two sides of the precast slab along the direction of the steel beam, the steel bar trusses 2 are distributed at the bottoms of the concretes 4, holes are reserved in the corresponding positions of the holes punched in the angle steel 1 to form a member A1 when the angle steel 1, the concretes 4 and the steel bar trusses 2 are integrally poured;
3. the cross rod of the L-shaped screw rod 3 is hung on the upper surface of the beam, and the vertical rod of the L-shaped screw rod 3 passes through the reserved hole of the component A1 and is screwed down by the nut 5.
4. The L-shaped screw rods 3 are distributed on two connecting sides of the beam slab at equal intervals, and the cross rods of the screw rods have enough length to ensure that the floor slab can be stably hung on the two side beams during hoisting.
Advantageous effects
The assembled composite floor slab with adjustable height has the outstanding advantage that
1) The assembly precision of the floor slabs is improved, the height of the prefabricated floor slabs can be adjusted, the height difference of each floor slab during manufacturing and hoisting is flexibly adjusted, and the lower surfaces of the floor slabs after hoisting are parallel and level.
2) And adjusting the relative position of the cast-in-place layer and the beam by adjusting the height position of the precast floor slab.
3) The composite floor slab is hung on the beam, so that the beam height of a part of the composite floor slab is hidden, the integrity of the beam slab is enhanced, the net height of the structural layer is increased, and the structure is more flexible and attractive in arrangement.
4) The arrangement of the steel bars in the truss form increases the bonding force of the superposed surfaces of the floor slabs and improves the overall performance of the floor slabs, particularly the shearing resistance.
Drawings
FIG. 1 is a structural component view of component A1 of the present invention;
FIG. 2 is a schematic view of the connection between the L-shaped lead screw and the steel beam of the present invention, which is an example of an H-shaped steel beam, and an angle iron;
FIG. 3 is a schematic view of a steel bar truss of the present invention;
FIG. 4 is a schematic view of the connection of the member A1 with a steel beam according to the present invention;
in the figure, 1-angle steel; 2-steel bar truss; 3-L-shaped lead screw; 4-concrete; 5-nut.
Detailed Description
The following describes a specific embodiment of the height-adjustable fabricated composite floor slab of the present invention with reference to fig. 1 to 4.
As shown in the attached drawings, the height-adjustable assembly type composite floor slab comprises angle steel 1, a steel bar truss 2, an L-shaped screw rod 3, concrete 4 and nuts 5.
The angle steel 1, the concrete 4 and the steel bar truss 2 form a casting member A1 together, and the manufacturing of A1 is completed in a factory; the steel bar trusses 2 are distributed at the bottom of the member A1 to be used as stress bars; two angle steels 1 are arranged at the bottoms of two sides of the precast slab along the beam direction, and holes are formed in the angle steels 1 before pouring; holes with the same size are reserved in the positions, corresponding to the holes of the angle steel 1, of the component A1 during pouring; when in site hoisting, the vertical rod of the L-shaped screw rod 3 passes through the hole on the A1, is screwed on the lower part of the member A1 through the nut 5, the cross rod is hung on the upper surface of the beam, and then formwork pouring of a post-cast layer of the laminated floor slab is carried out.
In the construction process of the site, according to the stress and force transmission characteristics of the floor slab, the length of the cross rod of the L-shaped screw rod is long enough, the floor slab can be stably hung on the two side beams, and the subsequent formwork erection pouring of a cast-in-place layer is completed. The height position of the precast slab is determined according to the overall thickness of the composite floor slab and the relative position of the floor slab and the beam, so that the upper surface of the composite floor slab is not lower than the upper surface of the beam.
It should be noted that the above is merely illustrative of the present invention and does not limit the scope of the present invention, and the practice of the present invention is not limited thereto.

Claims (4)

1. The utility model provides a but height-adjusting's assembled coincide floor which characterized in that: the laminated floor slab comprises angle steel (1), a steel bar truss (2), an L-shaped screw rod (3), a concrete precast slab (4) and a nut (5); the steel bar trusses (2) are distributed at the bottoms of the concrete precast slabs and serve as stress bars, the angle steels (1) are arranged at the bottoms of two sides of the concrete along the direction of the steel beams, the steel bar trusses, the angle steels and the angle steels are poured together to form a member A1, and a hole is reserved in the member A1 along the direction of the length of the beam; the vertical rod of the L-shaped screw rod (3) penetrates through a reserved hole on the member A1 and is screwed on the lower part of the member A1 through a nut (5), and the cross rod is hung on the upper surface of the beam; the end part of the member A1 is abutted against a steel beam web plate, the height of the floor slab is adjusted by adjusting a nut on the adjusting screw rod, the flatness of the lower surface of the floor slab is ensured, the thickness of a post-cast layer of the floor slab is adjusted, and the relative position of the floor slab and the beam is adjusted.
2. The composite floor slab of claim 1, wherein: utilize the suspension effect of L shape lead screw, hide partial beam height, the wholeness of reinforcing floor and roof beam increases the net height of structural layer.
3. The composite floor slab of claim 1, wherein: one side of the L-shaped screw rods is not less than three and is equidistantly arranged along the length direction of the steel beam.
4. The composite floor slab of claim 1, wherein: the upper surface of the member a1 is lower than the lower surface of the steel beam upper flange.
CN201810499367.0A 2018-05-23 2018-05-23 But height-adjusting's assembled coincide floor Active CN108643429B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810499367.0A CN108643429B (en) 2018-05-23 2018-05-23 But height-adjusting's assembled coincide floor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810499367.0A CN108643429B (en) 2018-05-23 2018-05-23 But height-adjusting's assembled coincide floor

Publications (2)

Publication Number Publication Date
CN108643429A CN108643429A (en) 2018-10-12
CN108643429B true CN108643429B (en) 2020-03-13

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112627414A (en) * 2020-12-04 2021-04-09 天津大学 Assembled engineering bamboo-lightweight concrete sandwich floor and construction method
CN112982824B (en) * 2021-02-23 2022-01-11 浙江大学建筑设计研究院有限公司 Notch steel beam with flange embedded into floor slab, floor slab structure and construction method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205063125U (en) * 2015-10-14 2016-03-02 山东隆和节能科技股份有限公司 Assembled coincide floor
CN105714966A (en) * 2016-02-03 2016-06-29 湖北宇辉新型建筑材料有限公司 Inverted laminated slab provided with elevation adjustment devices and construction method
PL416945A1 (en) * 2016-04-22 2017-10-23 Magdalena Lis Reinforced concrete slab, preferably a flooring slab or floor system
CN107060075A (en) * 2017-04-20 2017-08-18 沈阳建筑大学 A kind of supporting construction connected for fabricated construction beam slab and installation method
CN206873730U (en) * 2017-06-13 2018-01-12 四川省建筑设计研究院 A kind of steel bar truss floor structure
CN107780577A (en) * 2017-11-09 2018-03-09 浙江绿筑集成科技有限公司 A kind of special laminated floor slab of assembling type steel structure

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