CN202144641U - Integral bidirectional local unidirectional steel-concrete slab composite floor system - Google Patents

Integral bidirectional local unidirectional steel-concrete slab composite floor system Download PDF

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Publication number
CN202144641U
CN202144641U CN201120121014U CN201120121014U CN202144641U CN 202144641 U CN202144641 U CN 202144641U CN 201120121014 U CN201120121014 U CN 201120121014U CN 201120121014 U CN201120121014 U CN 201120121014U CN 202144641 U CN202144641 U CN 202144641U
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China
Prior art keywords
steel
concrete slab
girder
unidirectional
way
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Expired - Fee Related
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CN201120121014U
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Chinese (zh)
Inventor
聂建国
聂鑫
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Tsinghua University
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Tsinghua University
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Abstract

The utility model relates to an integral bidirectional local unidirectional steel-concrete slab composite floor system belonging to the field of a structural engineering. The integral bidirectional local unidirectional steel-concrete slab composite floor system consists of an integral bidirectional steel main beam, a local unidirectional steel secondary beam and a concrete slab. The bidirectional steel main beam has an I-shaped cross section or a box-shaped cross section; the local unidirectional steel secondary beam has an I-shaped cross section; and the concrete slab can adopt a cast-in-place concrete slab or a precast concrete slab or a superposed concrete slab, which is supported at the upper flanges of the bidirectional steel main beam and the unidirectional steel secondary beam and covers a region lattice between the steel beams. The material characteristics can be abundantly used due to a combination function, a mechanical effect of the integral bidirectional support can be realized, and the quantity of panel points can be reduced and the construction of a steel structure can be further conveniently performed on the base that the structural mechanical behavior can be guaranteed since the steel secondary beam in the region lattice of the bidirectional steel main beam is distributed in an unidirectional way.

Description

Whole two-way part unidirectional steel-concrete plate composite floor system
Technical field
The utility model relates to a kind of novel building cover structure (15m≤span L≤70m), belong to the Structural Engineering field of striding greatly.
Background technology
In the traditional architecture structure, adopt the steel-concrete composite beam superstructure of steel concrete girt strip type superstructure, steel concrete intersecting parallels superstructure or unidirectional supporting usually.But, when the planar dimension of building and post apart from enlarging markedly or indoor when not allowing to establish the vertical support member, these floor structural forms can't satisfy the requirement of large-span structure development on supporting capacity, anti-seismic performance.The bidirectional steel-stacked plate concrete composite building roof that has developed has solved the problems referred to above, but its number of nodes is more, and corresponding increase node connects workload, and because of the decussation node steel using amount that causes on the high side bigger than normal.
The utility model content
The purpose of the utility model is to provide the unidirectional steel-concrete composite floor system in whole two-way part that a kind of bearing capacity is high, structure height is low, the decussation node is few, steel using amount is little; Arrange raising superstructure rigidity through increasing secondary beam, increase girder district lattice span, save steel using amount; Reduce number of nodes simultaneously; Make things convenient for Construction of Steel Structure, help accelerating speed of application, guarantee construction quality.
The technical scheme of the utility model is following:
The two-way part of a kind of integral body unidirectional steel-concrete plate composite floor system is characterized in that: formed, and through shear connector 4 said each several part is combined into integral body by two-way steel girder 1, unidirectional steel secondary beam 2, concrete slab 3; Described two-way steel girder 1 adopts i section steel beam or box steel beam, is positioned at the lower floor of superstructure; Said unidirectional steel secondary beam 2 adopts i-shape steel beam, is arranged in the girder district lattice by single load bearing; Steel girder 1, steel secondary beam 2 intersect to form the girder steel grid; Said concrete slab 3 is supported on the top flange of intersection girder steel and covers the district's lattice that intersect between girder steel.
Described concrete slab 3 is cast-in-place or prefabricated superimposed concrete slab, also prestressed slab.
1 pair of superstructure of described two-way steel girder plays the effect of two-way supporting, and two-way steel girder district compartment is by the stressed layout steel of one-way slabs secondary beam 2.
The utility model has the following advantages with respect to prior art and the high-lighting effect:
Compare with steel concrete girt strip type superstructure, steel concrete intersecting parallels superstructure; The unidirectional steel-concrete composite floor system in whole two-way part can alleviate dead load greatly, reduces structure height, utilizes the girder steel supporting template; Improve formwork speed; Reduce template consumption and on-site concrete wet trade amount, be convenient to three-dimensional construction, shorten the construction period.Unidirectional supporting steel-concrete composite beam superstructure with traditional is compared, and can reduce structure height greatly, improves structural bearing capacity and rigidity.Compare with existing two-way steel-concrete folding plate composite floor system, the utility model can pass through the reasonable Arrangement secondary beam, improves superstructure rigidity; Increase girder district lattice span, reduce girder and arrange, reduce the decussation number of nodes; Save steel using amount; Simultaneously, help further accelerating the speed of application of steel work, guarantee construction quality
Description of drawings
Fig. 1 is the schematic perspective view of whole two-way part unidirectional steel-concrete plate composite floor system in the utility model.
Among the figure: the two-way steel girder of 1-; The unidirectional steel secondary beam of 2-; The 3-concrete slab; The 4-shear connector.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the utility model is further described.
The whole two-way part unidirectional steel-concrete plate composite floor system that the utility model provides is formed, and through shear connector 4 each several part is combined into whole co-operation by two-way steel girder 1, unidirectional steel secondary beam 2, concrete slab 3 three parts.Two-way steel girder 1 can be i section steel beam or box steel beam, is positioned at the lower floor of superstructure.Can adopt bolt to be connected or welding manner between the two-way steel girder 1 and with the connected mode of unidirectional steel secondary beam 2, girder steel quantity, sectional dimension and girder steel spacing are confirmed according to instructions for use.Shear connector 4 can adopt forms such as peg, channel-section steel, is with girder steel and the concrete slab cooperative parts that link together.Concrete slab 3 be supported on intersect girder steel the top flange and cover the district's lattice that intersect between girder steel, for cast-in-place or precast concrete plank or superimposed sheet, can apply prestressing force, also prestressed slab like needs; If adopt precast concrete plank, then lapped length of steel bar is not less than 5cm in the plate, connects through late poured band, and the ater-casting should guarantee the concrete density in notch place; If adopt cast in place concrete plate, then should dispose the reinforcing bar of some, prevent contraction, thermal cracking, satisfy the hogging moment area force request simultaneously.If adopt the superimposed sheet compoboard, the precast plate of then mating formation is earlier built last layer again.
The working procedure of the utility model is:
(1) make steel girder 1, steel secondary beam 2 in factory process, and welding shearing connector 4;
(2) on-the-spotly accomplish between the steel girder, be connected formation girder steel grid (steel girder 1, steel secondary beam 2) between steel secondary beam and the steel girder;
(3) after girder steel grid (steel girder 1, steel secondary beam 2) installation in position, concrete slab 3 is installed.If adopt cast in place concrete plate, then support earlier template, fluid concrete again with the girder steel bottom flange; If adopt precast concrete plank, then hoisting prefabricated concrete slab guarantees that to the girder steel top flange lapped length of steel bar is not less than 5cm in the plate earlier; The pouring concrete ater-casting, plate abutted seam place at the notch place; If adopt the superimposed sheet compoboard, the precast plate of then mating formation is earlier built last layer again.

Claims (3)

1. the two-way part of an integral body unidirectional steel-concrete plate composite floor system is characterized in that: be made up of two-way steel girder (1), unidirectional steel secondary beam (2), concrete slab (3), and through shear connector (4) said each several part be combined into integral body; Described two-way steel girder (1) adopts i section steel beam or box steel beam, is positioned at the lower floor of superstructure; Said unidirectional steel secondary beam (2) adopts i-shape steel beam, is arranged in the girder district lattice by single load bearing; Steel girder (1), steel secondary beam (2) intersect to form the girder steel grid; Said concrete slab (3) is supported on the top flange of intersection girder steel and covers the district's lattice that intersect between girder steel.
2. the two-way part of integral body according to claim 1 unidirectional steel-concrete plate composite floor system is characterized in that: described concrete slab (3) is cast-in-place or prefabricated superimposed concrete slab, also prestressed slab.
3. the two-way part of integral body according to claim 1 unidirectional steel-concrete plate composite floor system is characterized in that: two-way steel girder (1) plays the effect of two-way supporting to superstructure, and girder district compartment is by the stressed layout steel of one-way slabs secondary beam (2).
CN201120121014U 2011-04-22 2011-04-22 Integral bidirectional local unidirectional steel-concrete slab composite floor system Expired - Fee Related CN202144641U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120121014U CN202144641U (en) 2011-04-22 2011-04-22 Integral bidirectional local unidirectional steel-concrete slab composite floor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120121014U CN202144641U (en) 2011-04-22 2011-04-22 Integral bidirectional local unidirectional steel-concrete slab composite floor system

Publications (1)

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CN202144641U true CN202144641U (en) 2012-02-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261145A (en) * 2011-04-22 2011-11-30 清华大学 Integrally two-way and locally one-way steel-concrete slab composite floor system and construction method thereof
CN102852276A (en) * 2012-08-15 2013-01-02 杨众 Large-tonnage prestressed superposed crane beam and construction method
CN105908881A (en) * 2016-06-02 2016-08-31 中国矿业大学 Novel bidirectional inverted-T-shaped beam combined floor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261145A (en) * 2011-04-22 2011-11-30 清华大学 Integrally two-way and locally one-way steel-concrete slab composite floor system and construction method thereof
CN102852276A (en) * 2012-08-15 2013-01-02 杨众 Large-tonnage prestressed superposed crane beam and construction method
CN105908881A (en) * 2016-06-02 2016-08-31 中国矿业大学 Novel bidirectional inverted-T-shaped beam combined floor
CN105908881B (en) * 2016-06-02 2019-02-12 中国矿业大学 A kind of two-way beam of falling T composite floor

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120215

Termination date: 20120422