CN2606144Y - Structural beam with steel section and concrete combination - Google Patents

Structural beam with steel section and concrete combination Download PDF

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Publication number
CN2606144Y
CN2606144Y CN 03221014 CN03221014U CN2606144Y CN 2606144 Y CN2606144 Y CN 2606144Y CN 03221014 CN03221014 CN 03221014 CN 03221014 U CN03221014 U CN 03221014U CN 2606144 Y CN2606144 Y CN 2606144Y
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CN
China
Prior art keywords
steel
shaped
concrete
construction
structural
Prior art date
Application number
CN 03221014
Other languages
Chinese (zh)
Inventor
李培彬
李爱群
娄宇
石启印
厚石阿
Original Assignee
东南大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 东南大学 filed Critical 东南大学
Priority to CN 03221014 priority Critical patent/CN2606144Y/en
Application granted granted Critical
Publication of CN2606144Y publication Critical patent/CN2606144Y/en

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Abstract

Structural beam with steel section and concrete combination is a beam element which is widely used for the construction project, in particular to the beam element needing large span and space. The utility model comprises steel bars, steel sections and concrete, the costal part of the beam is provided with a ''U'' shaped sectional steel structure, the bottom part of the inner side of which is provided with an anti-cutting bolt, the inner side of the upper part of the ''U'' shaped sectional steel structure is provided with a transversal support, the beam is provided with an upper flange extruded bearing steel plate and a temperature distribution steel rod, the interior of the ''U'' shaped sectional steel structure and the upper flange is concrete, the ''T'' shaped structural beam with steel section and concrete combination is formed, the side of the anti-cutting bolt is provided with a longitudinal steel rod. This kind combined structure beam has the following advantages: 1) the construction process is optimized, thereby decreasing the construction cost and shortening the construction period; 2) the structure bearing performance is improved, thereby having strong anti-cutting capability for concrete; 3) the fireproof performance is increased, the utility model can bear the self-weight of the structure system without the whole structure collapsing when fire disaster happening. The utility model can be widely used for the building beam and the bridge structure with large span.

Description

The structural beams of shaped steel and concrete combination
One, technical field
The utility model relates to a kind of beam that is widely used in the civil engineering, is used for the beam of large span, large space needs on especially.
Two, background technology
At present, domestic and international known steel one concrete combined structure beam, mainly refer to make flank by i iron, concrete is made the tee girder on the edge of a wing, the shortcoming of this compound beam is: the first, and this cross section generally can not be used for continuous structure, when bearing hogging moment, section steel beam is in pressure zone, may cause the integral body and the local buckling of shaped steel; The second, the i iron in this cross section and the fireproof performance of profiled sheet are poor, solve fire safety problem, need roll up construction costs; The 3rd, the lateral stability of this section form is poor, and when torsion failure, the anti-twisting property of girder steel and concrete slab is extremely uneven, and the torsional property of girder steel is not fully utilized; The 4th, this cross section shear resistance deficiency if the transverse reinforcement configuration is not enough or improper, just may produce shearing or bond damage prior to bending failure, and this has increased the difficulty of design and construction, is difficult for holding.
Three, summary of the invention
1, technical problem
In order to overcome the deficiency that existing shaped steel-concrete combined structure beam exists, the utility model provides the structural beams of a kind of shaped steel and concrete combination, this structural beams is a kind of steel case beam feature that has, can give full play to concrete property and not easy to crack again, the novel combination beam of local buckling can not appear in the steel plate pressurized.
2, technical scheme
The utility model is the structural beams of a kind of shaped steel and concrete combination, combine by reinforcing bar, shaped steel, concrete, flank at beam is provided with U-shaped cross section steel work, bottom in this steel work inboard, U-shaped cross section is provided with shearing bolt, upper inner at U-shaped cross section steel work is provided with cross binding, on beam, be provided with the edge of a wing, top die mould and hold steel plate and Temperature Distribution reinforcing bar, in the steel work of U-shaped cross section and be concrete in the edge of a wing, top, form the T shape structural beams of shaped steel and concrete combination, at the other fire protection construction longitudinal reinforcement that is provided with of shearing bolt.
3, beneficial effect
This class combining structure beam has following advantage: 1) working procedure is optimized.U-shaped steel member partly can be used as the interim support in the construction, does not need template in the construction, can reduce construction cost, shortens construction period; 2) structure tension performance improves.This class compound beam makes member both increase rigidity of section because inner fill concrete, prevents that again girder steel from doing the time spent separately and approaching because of web is high and be easy to generate crippling.This class compound beam has superior compound section, can reduce the beam section height to increase house headroom (the girder span height ratio can reach 24-28).This class compound beam has been owing to disposed measures such as horizontal steel tie and shearing bolt textural, thereby has powerful concrete and bond shear resistance.3) fireproof performance is improved.This class A of geometric unitA bottom is furnished with vertical fire protection construction reinforcing bar, the edge of a wing, top is furnished with the Temperature Distribution reinforcing bar, and the edge of a wing, top adopts the superior novel closed type of fireproof performance to hold steel plate, thereby under the breaking out of fire situation, can bear the structural system deadweight, the total unstability is collapsed.This shows that this class compound beam has superior technical performance index, it can be widely used in the beam and long span bridge girder construction in the building construction.
Four, description of drawings
Fig. 1 is a simply supported beam element cross-section structural representation of the present utility model.Wherein there is the edge of a wing, top die mould to hold steel plate 1, Temperature Distribution reinforcing bar 2, U-shaped cross section steel work 4, cross binding 5, concrete 6, shearing bolt 7.
Fig. 2 is the structural representation that is provided with longitudinal reinforcement 3 in the simply supported beam member of the present utility model.
Five, the specific embodiment
The utility model is the structural beams of a kind of shaped steel and concrete combination, combine by reinforcing bar, shaped steel, concrete, flank at beam is provided with U-shaped cross section steel work 4, bottom in these steel work 4 inboards, U-shaped cross section is provided with shearing bolt 7, upper inner at U-shaped cross section steel work 4 is provided with cross binding 5, on beam, be provided with the edge of a wing, top die mould and hold steel plate 1 and Temperature Distribution reinforcing bar 2, in U-shaped cross section steel work 4 and be concrete 6 in the edge of a wing, top, form the T type structural beams that shaped steel and concrete make up.
The utility model solves the concrete mode that its technical problem takes: the first, with steel plate cold bending or be welded into the U-shaped cross section,, and dispose the vertical muscle of certain fire protection construction at the bottom in U-shaped cross section steel plate medial surface welding shearing bolt as the beam rib; Second, changing traditional profiled sheet into novel B ARDEK closed type rib shape steel board is bearing on the top flange in U-shaped cross section, dispose certain horizontal steel tie then, disturbing concrete in the flank in U-shaped cross section and the edge of a wing, top, the member that forms steel-concrete T shape compound section is to bear external load jointly.
This structure is compared with traditional shaped steel-concrete combined structure, has following superior technology, economic indicator:
(1) powerful concrete bonds shearing resistance (allowing can avoid steel and concrete slip phenomenon under the design load situation in the limit);
(2) (span-depth radio of this combining structure beam is higher than the span-depth radio of concrete beam, steel structure girder far away, can reach 24-28 in superior combining structure cross section;
(3) better fire resistance;
During construction, the first step: at the construction field (site), press the blanking of design drawing beam size, with steel plate cold bending or be welded into U-shaped cross section (4), welding shearing bolt (7), cross binding (5);
Second step: this U-shaped cross section steel member (4) is placed on the locations of structures, and connects in structure;
The 3rd step: closed type is held top flange and the spot welding that steel plate (1) is placed on this U-shaped cross section (4);
The 4th step: pouring concrete (6), and place bi-directional distributed temperature reinforcement (2).
It not only can improve the problem that conventional composite beam exists this structure, and aspect construction, every technical indicators such as structure fire aspect of performance, structure tension performance aspect are more superior.

Claims (2)

1, the structural beams of a kind of shaped steel and concrete combination, combine by reinforcing bar, shaped steel, concrete, it is characterized in that being provided with U-shaped cross section steel work (4) at the flank of beam, the bottom inboard at this U-shaped cross section steel work (4) is provided with shearing bolt (7), upper inner at U-shaped cross section steel work (4) is provided with cross binding (5), on beam, be provided with the edge of a wing, top die mould and hold steel plate (1) and Temperature Distribution reinforcing bar (2), in U-shaped cross section steel work (4) and be concrete (6) in the edge of a wing, top, form the T shape structural beams that shaped steel and concrete make up.
2, the structural beams of shaped steel according to claim 1 and concrete combination is characterized in that at the other fire protection construction longitudinal reinforcement (3) that is provided with of shearing bolt (7).
CN 03221014 2003-04-08 2003-04-08 Structural beam with steel section and concrete combination CN2606144Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03221014 CN2606144Y (en) 2003-04-08 2003-04-08 Structural beam with steel section and concrete combination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03221014 CN2606144Y (en) 2003-04-08 2003-04-08 Structural beam with steel section and concrete combination

Publications (1)

Publication Number Publication Date
CN2606144Y true CN2606144Y (en) 2004-03-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03221014 CN2606144Y (en) 2003-04-08 2003-04-08 Structural beam with steel section and concrete combination

Country Status (1)

Country Link
CN (1) CN2606144Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100432348C (en) * 2004-06-14 2008-11-12 东洋综合建业株式会社 Prestress mixed beam with concrete plate and corrugate steel web beam
CN102995834A (en) * 2012-12-14 2013-03-27 金天德 Combined-type steel tube concrete column
CN104100037A (en) * 2014-06-26 2014-10-15 同济大学 Combined flat beam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100432348C (en) * 2004-06-14 2008-11-12 东洋综合建业株式会社 Prestress mixed beam with concrete plate and corrugate steel web beam
CN102995834A (en) * 2012-12-14 2013-03-27 金天德 Combined-type steel tube concrete column
CN104100037A (en) * 2014-06-26 2014-10-15 同济大学 Combined flat beam

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