CN103835435A - U-shaped steel-concrete composite beam - Google Patents
U-shaped steel-concrete composite beam Download PDFInfo
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- CN103835435A CN103835435A CN201410082980.4A CN201410082980A CN103835435A CN 103835435 A CN103835435 A CN 103835435A CN 201410082980 A CN201410082980 A CN 201410082980A CN 103835435 A CN103835435 A CN 103835435A
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- 239000004567 concrete Substances 0.000 title claims abstract description 84
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 131
- 239000010959 steel Substances 0.000 claims abstract description 131
- 230000002787 reinforcement Effects 0.000 claims description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 34
- 238000005452 bending Methods 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 3
- 239000004574 high-performance concrete Substances 0.000 claims description 2
- 239000011178 precast concrete Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012946 outsourcing Methods 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 6
- 150000001875 compounds Chemical class 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000013332 literature search Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The invention discloses a U-shaped steel-concrete composite beam, relates to a composite beam, and solves the problems that the conventional I-shaped steel-concrete composite beam has poor fire resistance and poor overall stability, an outsourcing steel-concrete laminated plate composite beam has low anti-shear bearing capacity, the complete cooperative work of a steel beam and concrete is not guaranteed easily. The U-shaped steel-concrete composite beam comprises a concrete plate, U-shaped steel, a plurality of pieces of angle steel, a plurality of longitudinal stress reinforcing steel bars, a plurality of erect reinforcing steel bars and the concrete; each web plate of the U-shaped steel is fixedly connected with a flange plate which is arranged horizontally; the U-shaped steel and the flange plate are integrated; the plurality of pieces of angle steel are fixedly connected in the U-shaped steel along the length direction of the U-shaped steel; an erect reinforcing steel bar is welded on the side surface of each piece of angle steel; the longitudinal stress reinforcing steel bars are fixedly connected with the corresponding erect reinforcing steel bars along the length direction of the U-shaped steel; the concrete plate is arranged on the top of the U-shaped steel; the reinforcing steel bars in the concrete plate are bent and then extend into the U-shaped steel; the concrete is cast in the U-shaped steel. The U-shaped steel-concrete composite beam is applied to civil engineering construction.
Description
Technical field
The present invention relates to a kind of compound beam, be specifically related to a kind of U-shaped steel-concrete composite beam without fireproof paint, belong to building structure technology field.
Background technology
Steel-concrete composite beam has that rigidity is large, bearing capacity advantages of higher, in Practical Project, be widely used, what in engineering, commonly use at present is I-shaped steel-concrete composite beam, I-shaped steel-concrete composite beam is because girder steel is directly exposed, in Practical Project, need on i iron, be coated with fireproof paint to improve the fire resistance of compound beam, cause thus the cost of I-shaped steel-concrete composite beam to improve; Meanwhile, I-shaped steel-concrete composite beam is in bean column node hogging moment area, and girder steel bottom flange pressurized, for preventing that I-steel from producing plane instability, need arrange angle brace at beam-ends.
By literature search, application number is 201210597480.5 Chinese invention patent application proposition outsourcing steel-concrete folding plate combined beam, this compound beam adopts the form of turning in channel-section steel, this type of compound beam easily causes the concreting leakiness at inner corner trim place, channel-section steel top, construction quality is difficult for guaranteeing, in addition because this application for a patent for invention adopts light gauge cold-formed steel shape, the section of the top flange of U-shaped beam is as shear connector, its shear-carrying capacity is lower, is difficult for guaranteeing girder steel and the complete collaborative work of concrete.
Summary of the invention
The present invention is that existing I-shaped steel-concrete composite beam fire resistance is poor and resistance to overturning is poor in order to solve, and outsourcing steel-concrete folding plate combined beam shear-carrying capacity is lower, be difficult for guaranteeing the problem of girder steel and the complete collaborative work of concrete, and then a kind of U-shaped steel-concrete composite beam is provided.
The present invention addresses the above problem the technical scheme of taking to be: a kind of U-shaped steel-concrete composite beam of the present invention comprises concrete slab, and it also comprises U-shaped steel, multiple angle steel, many Reinforcements, many handling reinforcements and concrete;
Each web upper end of U-shaped steel is connected with horizontally disposed frange plate, U-shaped steel and frange plate are made into integration, in U-shaped steel, be connected with along its length multiple angle steel, the length direction of angle steel is vertical with the length direction of U-shaped steel, many Reinforcements are arranged along the length direction interval of U-shaped steel, the side of each angle steel is welded with a handling reinforcement, Reinforcement is fixed on handling reinforcement along the length direction of U-shaped steel, the top of U-shaped steel arranges concrete slab, after reinforcing bar bending in concrete slab, stretch in U-shaped steel, pouring concrete is in U-shaped steel.
The invention has the beneficial effects as follows: one, the existence of U-shaped steel inner concrete of the present invention and longitudinal reinforcement, just can meet anti-fiery requirement without being coated with fireproof paint, significantly improve the fire resistance of compound beam.Two, the relatively traditional I-shaped steel-concrete composite beam of the present invention has higher bending rigidity and bearing capacity, and height of the present invention decreases with respect to the I-shaped steel-concrete composite beam height of tradition, thereby can reduce depth of structural layer.Three, traditional I-shaped steel-concrete composite beam is in bean column node hogging moment area, I-steel bottom flange pressurized, therefore, unstability outside common steel-structure beam-column node district need arrange the plane that angle brace stops girder steel, and basic steel member U-shaped steel in compound beam of the present invention is U-shaped cross section, inner fill concrete simultaneously, it has very high out of plane stiffness, U-shaped steel can not produce the outer unstability of plane, in structural system, can save the layout of angle brace, thereby save steel and simplify work progress, overall manufacturing cost has reduced 30%-40%.Four, in compound beam of the present invention, the inner concrete existence of U-shaped steel has improved anti-bending bearing capacity and the bending rigidity of compound beam, has further improved the stress performance of compound beam.In the I-shaped steel-concrete composite beam of tradition, shear connector adopts peg, because the shear-carrying capacity of single peg is lower, making needs more shear connector in compound beam, causes construction complicated, and compound beam of the present invention, adopt angle steel as shear connector, it has the shear-carrying capacity higher than peg, and angle steel can be used as and sockets part connection U-shaped steel two webs simultaneously, guarantees the integrally-built stability of U-shaped steel.This outboard angle can also play uplift effect, prevents that U-shaped steel from longitudinally separating with concrete slab.Five, the present invention adopts the compound beam form that frange plate turns up, and can effectively guarantee concrete pouring quality; Adopt angle steel that shear resistance is stronger as shear connector simultaneously, angle steel can also play resistance to plucking and socket effect simultaneously, can substitute connecting reinforcement and section shear connector in existing outsourcing steel-concrete folding plate combined beam simultaneously, guarantee the complete collaborative work of girder steel and concrete.
Accompanying drawing explanation
Fig. 1 is the overall structure sectional drawing of U-shaped steel-concrete composite beam of the present invention, and Fig. 2 is the overall structure stereogram that U-shaped steel of the present invention, angle steel, handling reinforcement are connected with Reinforcement.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1-Fig. 2 explanation, a kind of U-shaped steel-concrete composite beam of present embodiment comprises concrete slab 7, it also comprises U-shaped steel 1, multiple angle steel 2, many Reinforcements 4, many handling reinforcements 3 and concrete eight;
Each web upper end of U-shaped steel 1 is connected with horizontally disposed frange plate 1-1, U-shaped steel 1 is made into integration with frange plate 1-1, in U-shaped steel 1, be connected with along its length multiple angle steel 2, the length direction of angle steel 2 is vertical with the length direction of U-shaped steel 1, many Reinforcements 4 are arranged along the length direction interval of U-shaped steel 1, the side of each angle steel 2 is welded with a handling reinforcement 3, Reinforcement 4 is fixed on handling reinforcement 3 along the length direction of U-shaped steel 1, the top of U-shaped steel 1 arranges concrete slab 7, after reinforcing bar 6 bendings in concrete slab 7, stretch in U-shaped steel 1, concrete eight is cast in U-shaped steel 1.
The U-shaped steel of present embodiment can or be welded by steel plate rolling, and angle iron connecting piece can or be welded by steel plate rolling.
The specific embodiment two: in conjunction with Fig. 2 explanation, the handling reinforcement 3 of present embodiment adopts U-shaped reinforcing bar or the handling reinforcement with crotch, and Reinforcement 4 is fixed in the U-lag or crotch of handling reinforcement 3 along the length direction of U-shaped steel 1.So arrange, form of structure is various, and stable connection is reliable.Other is identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 2 explanation, the U-shaped steel 1 of present embodiment adopts weld seam to be connected with angle steel 2.So arrange, angle steel can be arranged on U-shaped steel inside and also can be placed on U-shaped steel end face, simple structure, and power transmission is directly simple and direct.Other is identical with the specific embodiment one or two.
The specific embodiment four: in conjunction with Fig. 2 explanation, the angle steel 2 of present embodiment is connected with handling reinforcement 3 weld seams.So arrange, simple structure, power transmission is directly simple and direct.Other is identical with the specific embodiment three.
The specific embodiment five: in conjunction with Fig. 2 explanation, concrete slab 7 is precast concrete plank or cast in place concrete plate described in present embodiment.So arrange, easy to use, meet actual needs.Other is identical with the specific embodiment one, two or four
The specific embodiment six: in conjunction with Fig. 2 explanation, the U-shaped steel 1 of present embodiment and frange plate 1-1 make by Q235 steel, Q345 steel, Q390 steel or Q420 steel.So arrange, yield strength is large, meets actual needs.Other is identical with the specific embodiment five.
The specific embodiment seven: in conjunction with Fig. 2 explanation, the angle steel 2 of present embodiment is made up of Q235 steel, Q345 steel, Q390 steel or Q420 steel.So arrange, yield strength is large, meets actual needs.Other is identical with the specific embodiment one, two, four or six.
The specific embodiment eight: in conjunction with Fig. 2 explanation, the handling reinforcement 3 of present embodiment is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.So arrange, yield strength is large, meets actual needs.Other is identical with the specific embodiment seven.
The specific embodiment nine: in conjunction with Fig. 2 explanation, the Reinforcement 4 of present embodiment is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.So arrange, yield strength is large, meets actual needs.Other is identical with the specific embodiment one, two, four, six or eight.
The specific embodiment ten: in conjunction with Fig. 1 explanation, the concrete eight of present embodiment is C30-C80 ordinary concrete, light weight aggregate concrete or high performance concrete; Reinforcing bar 6 in concrete slab 7 is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.So arrange, meet actual needs, C30-C80 is strength grade.Other is identical with the specific embodiment nine.
Embodiment
In conjunction with Fig. 1-Fig. 2 explanation, first on U-shaped steel 1, weld angle steel 2, angle steel 2 is arranged along the length direction of U-shaped steel 1; Then handling reinforcement 3 is welded on angle steel 2.At the construction field (site), after U-shaped steel 1 is installed location, Reinforcement 4 is set on handling reinforcement 3, simultaneously, make concrete slab 7(concrete slab can be prefabricated also can be cast-in-place), (steel bar stress 5 and reinforcing bar 6 in colligation plate), reinforcing bar 6 bends and gos deep in U-shaped steel 1, make concrete slab and the better collaborative work of U-shaped steel, last concrete eight is cast in U-shaped steel 1, after concrete hardens completely, U-shaped steel and concrete slab are connected to entirety by reinforcing bar 6, form U-shaped steel-concrete composite beam, and co-operation is stressed.U-shaped steel can or be welded by steel plate rolling, and angle iron connecting piece can or be welded by steel plate rolling.
The preparation experiment result of full-scale specimen (span is 7.2m-8.4m) shows, compound beam of the present invention has higher bearing capacity and good ductility, in test the mid-span deflection of compound beam to have reached the 1/24-1/22(operational phase code requirement of span be only 1/400), when shearing resistance angle steel setting more sparse (spacing is 220mm-300mm), can guarantee between girder steel and concrete slab without slippage relatively, both well collaborative works.
Claims (10)
1. a U-shaped steel-concrete composite beam, it comprises concrete slab 7, it is characterized in that: it also comprises U-shaped steel (1), multiple angle steel (2), many Reinforcements (4), many handling reinforcements (3) and concrete (8);
Each web upper end of U-shaped steel (1) is connected with horizontally disposed frange plate (1-1), U-shaped steel (1) is made into integration with frange plate (1-1), in U-shaped steel (1), be connected with along its length multiple angle steel (2), the length direction of angle steel (2) is vertical with the length direction of U-shaped steel (1), many Reinforcements (4) are arranged along the length direction interval of U-shaped steel (1), the side of each angle steel (2) is welded with a handling reinforcement (3), Reinforcement (4) is fixed on handling reinforcement (3) along the length direction of U-shaped steel (1), U-shaped steel (1) top arranges concrete slab (7), after reinforcing bar (6) bending in concrete slab (7), stretch in U-shaped steel (1), concrete (8) is cast in U-shaped steel (1).
2. a kind of U-shaped steel-concrete composite beam according to claim 1, it is characterized in that: handling reinforcement (3) adopts U-shaped reinforcing bar or the handling reinforcement with crotch, and Reinforcement (4) is fixed in the U-lag or crotch of handling reinforcement (3) along the length direction of U-shaped steel (1).
3. a kind of U-shaped steel-concrete composite beam according to claim 1 and 2, is characterized in that: U-shaped steel (1) adopts weld seam to be connected with angle steel (2).
4. a kind of U-shaped steel-concrete composite beam according to claim 3, is characterized in that: angle steel (2) adopts weld seam to be connected with handling reinforcement (3).
5. according to a kind of U-shaped steel-concrete composite beam described in claim 1,2 or 4, it is characterized in that: described concrete slab (7) is precast concrete plank or cast in place concrete plate.
6. a kind of U-shaped steel-concrete composite beam according to claim 5, is characterized in that: U-shaped steel (1) and frange plate (1-1) are made by Q235 steel, Q345 steel, Q390 steel or Q420 steel.
7. according to a kind of U-shaped steel-concrete composite beam described in claim 1,2,4 or 6, it is characterized in that: angle steel (2) is made up of Q235 steel, Q345 steel, Q390 steel or Q420 steel.
8. a kind of U-shaped steel-concrete composite beam according to claim 7, is characterized in that: handling reinforcement (3) is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.
9. according to a kind of U-shaped steel-concrete composite beam described in claim 1,2,4,6 or 8, it is characterized in that: Reinforcement (4) is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.
10. a kind of U-shaped steel-concrete composite beam according to claim 9, is characterized in that: described concrete (8) is C30-C80 ordinary concrete, light weight aggregate concrete or high performance concrete; Reinforcing bar (6) in concrete slab (7) is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.
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| CN201410082980.4A CN103835435B (en) | 2014-03-07 | 2014-03-07 | A kind of U-shaped steel-concrete composite beam |
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| CN201410082980.4A CN103835435B (en) | 2014-03-07 | 2014-03-07 | A kind of U-shaped steel-concrete composite beam |
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| CN103835435A true CN103835435A (en) | 2014-06-04 |
| CN103835435B CN103835435B (en) | 2016-04-27 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294920A (en) * | 2014-10-30 | 2015-01-21 | 江苏中宝钢构有限公司 | Joint assembly of U-shaped steel reinforced concrete combined beam and special-shaped concrete-filled steel tube column and manufacturing method of joint assembly |
| CN104878863A (en) * | 2015-04-30 | 2015-09-02 | 宁波大学 | Light composite floor and construction method thereof |
| CN105019646A (en) * | 2015-07-31 | 2015-11-04 | 上海市政工程设计研究总院（集团）有限公司 | U-shaped steel-structure formwork |
| CN106013599A (en) * | 2016-07-05 | 2016-10-12 | 风范绿色建筑（常熟）有限公司 | U-shaped steel beam |
| CN107044191A (en) * | 2017-05-08 | 2017-08-15 | 常熟风范电力设备股份有限公司 | A kind of high-performance shape for hat steel-tube construction beam |
| CN108291401A (en) * | 2015-09-01 | 2018-07-17 | 法尔福股份有限公司 | For the supporting beam of ceiling system, ceiling system and its manufacturing method |
| CN109702859A (en) * | 2018-12-27 | 2019-05-03 | 哈尔滨工业大学 | A kind of U-shaped steel component combination beam and preparation method thereof that reinforced pipe is set |
| CN110130211A (en) * | 2019-06-13 | 2019-08-16 | 同济大学 | The combination beam of the spacer adapter containing shearing in a kind of channel steel edge of a wing |
| CN110396914A (en) * | 2019-07-11 | 2019-11-01 | 重庆大学 | U-shaped Steel Thin-Wall-prestressed concrete combination beam and its construction method |
| CN111270769A (en) * | 2020-02-10 | 2020-06-12 | 湖南理工学院 | Basalt fiber concrete section steel composite structure and manufacturing method thereof |
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2014
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294920A (en) * | 2014-10-30 | 2015-01-21 | 江苏中宝钢构有限公司 | Joint assembly of U-shaped steel reinforced concrete combined beam and special-shaped concrete-filled steel tube column and manufacturing method of joint assembly |
| CN104878863B (en) * | 2015-04-30 | 2017-05-03 | 宁波大学 | Construction method of light composite floor |
| CN104878863A (en) * | 2015-04-30 | 2015-09-02 | 宁波大学 | Light composite floor and construction method thereof |
| CN105019646A (en) * | 2015-07-31 | 2015-11-04 | 上海市政工程设计研究总院（集团）有限公司 | U-shaped steel-structure formwork |
| US10407910B2 (en) | 2015-09-01 | 2019-09-10 | Pfeifer Holding Gmbh & Co. Kg | Supporting beam for slab systems, slab system and method for the production thereof |
| CN108291401A (en) * | 2015-09-01 | 2018-07-17 | 法尔福股份有限公司 | For the supporting beam of ceiling system, ceiling system and its manufacturing method |
| CN108291401B (en) * | 2015-09-01 | 2021-03-16 | 法尔福股份有限公司 | Support beam for ceiling system, ceiling system and method for manufacturing the same |
| CN106013599A (en) * | 2016-07-05 | 2016-10-12 | 风范绿色建筑（常熟）有限公司 | U-shaped steel beam |
| CN107044191A (en) * | 2017-05-08 | 2017-08-15 | 常熟风范电力设备股份有限公司 | A kind of high-performance shape for hat steel-tube construction beam |
| CN109702859A (en) * | 2018-12-27 | 2019-05-03 | 哈尔滨工业大学 | A kind of U-shaped steel component combination beam and preparation method thereof that reinforced pipe is set |
| CN110130211A (en) * | 2019-06-13 | 2019-08-16 | 同济大学 | The combination beam of the spacer adapter containing shearing in a kind of channel steel edge of a wing |
| CN110396914A (en) * | 2019-07-11 | 2019-11-01 | 重庆大学 | U-shaped Steel Thin-Wall-prestressed concrete combination beam and its construction method |
| CN111270769A (en) * | 2020-02-10 | 2020-06-12 | 湖南理工学院 | Basalt fiber concrete section steel composite structure and manufacturing method thereof |
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