CN103835435B - A kind of U-shaped steel-concrete composite beam - Google Patents
A kind of U-shaped steel-concrete composite beam Download PDFInfo
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- CN103835435B CN103835435B CN201410082980.4A CN201410082980A CN103835435B CN 103835435 B CN103835435 B CN 103835435B CN 201410082980 A CN201410082980 A CN 201410082980A CN 103835435 B CN103835435 B CN 103835435B
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- 239000004567 concrete Substances 0.000 title claims abstract description 83
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 134
- 239000010959 steel Substances 0.000 claims abstract description 134
- 230000002787 reinforcement Effects 0.000 claims abstract description 44
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 36
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000010354 integration Effects 0.000 claims abstract description 4
- 238000013461 design Methods 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 239000004574 high-performance concrete Substances 0.000 claims description 2
- 239000011178 precast concrete Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 15
- 238000012946 outsourcing Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 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
- 241000469816 Varus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 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
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A kind of U-shaped steel-concrete composite beam, it relates to a kind of compound beam, to solve, existing I-shaped steel-concrete composite beam fire resistance is poor and resistance to overturning is poor, and outsourcing steel-concrete folding plate combined beam shear-carrying capacity is lower, not easily ensure the problem of girder steel and the complete collaborative work of concrete, it comprises concrete slab, and it also comprises U-shaped steel, multiple angle steel, many Reinforcements, many handling reinforcements and concrete; Each web of U-shaped steel is connected with horizontally disposed frange plate, U-shaped steel and frange plate are made into integration, multiple angle steel is connected with along its length in 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, U-shaped steel top arranges concrete slab, and stretch in U-shaped steel after the reinforcing bar bending in concrete slab, pouring concrete is in U-shaped steel.The present invention is used in civil engineering work.
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 the need to fireproof paint, belong to building structure technology field.
Background technology
Steel-concrete composite beam has that rigidity is large, bearing capacity advantages of higher, be widely used in Practical Project, what commonly use in current engineering is I-shaped steel-concrete composite beam, I-shaped steel-concrete composite beam due to girder steel directly exposed, need in Practical Project on i iron, to be coated with fireproof paint to improve the fire resistance of compound beam, cause the cost of I-shaped steel-concrete composite beam to improve thus; Meanwhile, I-shaped steel-concrete composite beam is in bean column node hogging moment area, and girder steel bottom flange pressurized, for preventing I-steel from producing plane instability, need arrange angle brace at beam-ends.
By literature search, application number is the Chinese invention patent application proposition outsourcing steel-concrete folding plate combined beam of 201210597480.5, this compound beam adopts the form of channel-section steel varus, this type of compound beam easily causes the concreting leakiness at inner corner trim place, channel-section steel top, construction quality not easily ensures, 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, not easily ensures 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, not easily ensure 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 is the technical scheme taked that solves the problem: 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, multiple angle steel is connected with along its length in U-shaped 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, stretch in U-shaped steel after reinforcing bar bending in concrete slab, 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 fire-resistance requirement without the need to being coated with fireproof paint, significantly improving 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 relative to the I-shaped steel-concrete composite beam height of tradition, thus 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, angle brace need be set in common steel-structure beam-column node district to stop the outer unstability of the plane of girder steel, and the basic steel component 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, the layout of angle brace can be saved in structural system, thus save steel and simplify work progress, overall manufacturing cost reduces 30%-40%.Four, in compound beam of the present invention, the existence of U-shaped steel inner concrete improves anti-bending bearing capacity and the bending rigidity of compound beam, further increases 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, make in compound beam, to need more shear connector, cause 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 connect U-shaped steel two web as socketing part simultaneously, ensures the integrally-built stability of U-shaped steel.This outboard angle can also play uplift effect, prevents U-shaped steel to be longitudinally separated with concrete slab.Five, the present invention's compound beam form of adopting frange plate to turn up, can effectively ensure concrete pouring quality; Adopt the angle steel that shear resistance is stronger as shear connector simultaneously, angle steel can also play resistance to plucking and socket effect simultaneously, the connecting reinforcement in existing outsourcing steel-concrete folding plate combined beam and section shear connector can be substituted simultaneously, ensure that girder steel and the complete collaborative work of concrete.
Accompanying drawing explanation
Fig. 1 is the overall structure sectional drawing of U-shaped steel-concrete composite beam of the present invention, the overall structure stereogram that Fig. 2 is U-shaped steel of the present invention, angle steel, handling reinforcement are connected with Reinforcement.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1-Fig. 2 illustrates, a kind of U-shaped steel-concrete composite beam of present embodiment comprises concrete slab 7, and it also comprises U-shaped steel 1, multiple angle steel 2, many Reinforcements 4, many handling reinforcements 3 and concrete eights;
Each web upper end of U-shaped steel 1 is connected with horizontally disposed frange plate 1-1, U-shaped steel 1 and frange plate 1-1 are made into integration, multiple angle steel 2 is connected with along its length in U-shaped steel 1, 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, reinforcing bar 6 in concrete slab 7 stretches in U-shaped steel 1 after bending, concrete eight is cast in U-shaped steel 1.
The U-shaped steel of present embodiment by steel plate rolling or can be welded, and angle iron connecting piece by steel plate rolling or can be welded.
Detailed description of the invention two: composition graphs 2 illustrates, the handling reinforcement 3 of present embodiment adopts U-shaped reinforcing bar or the handling reinforcement with crotch, in the U-lag that Reinforcement 4 is fixed in handling reinforcement 3 along the length direction of U-shaped steel 1 or crotch.Setting like this, form of structure is various, and stable connection is reliable.Other is identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 2 illustrates, U-shaped steel 1 and the angle steel 2 of present embodiment adopt solder design.Setting like this, angle steel can be arranged on U-shaped steel inside and also can be placed on U-shaped steel end face, and simple structure, power transmission is directly simple and direct.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: composition graphs 2 illustrates, angle steel 2 and handling reinforcement 3 solder design of present embodiment.Setting like this, simple structure, power transmission is directly simple and direct.Other is identical with detailed description of the invention three.
Detailed description of the invention five: composition graphs 2 illustrates, described in present embodiment, concrete slab 7 is precast concrete plank or cast in place concrete plate.Setting like this, easy to use, meet actual needs.Other with detailed description of the invention one, two or four identical
Detailed description of the invention six: composition graphs 2 illustrates, the U-shaped steel 1 of present embodiment and frange plate 1-1 make by Q235 steel, Q345 steel, Q390 steel or Q420 steel.Setting like this, yield strength is large, meets actual needs.Other is identical with detailed description of the invention five.
Detailed description of the invention seven: composition graphs 2 illustrates, the angle steel 2 of present embodiment is made up of Q235 steel, Q345 steel, Q390 steel or Q420 steel.Setting like this, yield strength is large, meets actual needs.Other with detailed description of the invention one, two, four or six identical.
Detailed description of the invention eight: composition graphs 2 illustrates, the handling reinforcement 3 of present embodiment is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.Setting like this, yield strength is large, meets actual needs.Other is identical with detailed description of the invention seven.
Detailed description of the invention nine: composition graphs 2 illustrates, the Reinforcement 4 of present embodiment is made up of HRB235 reinforcing bar, HRB335 reinforcing bar, HRB400 reinforcing bar or RRB400 reinforcing bar.Setting like this, yield strength is large, meets actual needs.Other with detailed description of the invention one, two, four, six or eight identical.
Detailed description of the invention ten: composition graphs 1 illustrates, 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.Setting like this, meets actual needs, and C30-C80 is strength grade.Other is identical with detailed description of the invention nine.
Embodiment
Composition graphs 1-Fig. 2 illustrates, first on U-shaped steel 1, welds angle steel 2, and 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), U-shaped steel 1 arranges Reinforcement 4 after installing location on handling reinforcement 3, simultaneously, make concrete slab 7(concrete slab can prefabricated also can be cast-in-place), (in colligation plate steel bar stress 5 and reinforcing bar 6), 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 is connected for overall by reinforcing bar 6 with concrete slab, and form U-shaped steel-concrete composite beam, co-operation is stressed.U-shaped steel by steel plate rolling or can be welded, and angle iron connecting piece by steel plate rolling or can be welded.
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, the 1/24-1/22(operational phase code requirement that in test, the mid-span deflection of compound beam reaches span is only 1/400), shearing resistance angle steel arrange more sparse (spacing is 220mm-300mm) time can ensure without Relative sliding between girder steel and concrete slab, both can well collaborative work.
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) and frange plate (1-1) are made into integration, multiple angle steel (2) is connected with along its length in U-shaped steel (1), 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), stretch in U-shaped steel (1) after reinforcing bar (6) bending in concrete slab (7), concrete (8) is cast in U-shaped steel (1),
In plate, steel bar stress (5) is arranged in concrete slab (7) along the length direction of U-shaped steel (1), in plate, steel bar stress (5) is together with reinforcing bar (6) colligation, and adjacent angle steel (2) spacing is 220-300mm.
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, in the U-lag that Reinforcement (4) is fixed in handling reinforcement (3) along the length direction of U-shaped steel (1) or crotch.
3. a kind of U-shaped steel-concrete composite beam according to claim 1 and 2, is characterized in that: U-shaped steel (1) and angle steel (2) adopt solder design.
4. a kind of U-shaped steel-concrete composite beam according to claim 3, is characterized in that: angle steel (2) and handling reinforcement (3) adopt solder design.
5. a kind of U-shaped steel-concrete composite beam according to claim 1,2 or 4, 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. a kind of U-shaped steel-concrete composite beam according to claim 1,2,4 or 6, 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. a kind of U-shaped steel-concrete composite beam according to claim 1,2,4,6 or 8, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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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 CN103835435A (en) | 2014-06-04 |
| CN103835435B true CN103835435B (en) | 2016-04-27 |
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| CN109702859B (en) * | 2018-12-27 | 2020-07-31 | 哈尔滨工业大学 | U-shaped steel assembly combination beam with reinforcing pipes and manufacturing method thereof |
| 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 |
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| CN201722844U (en) * | 2010-05-19 | 2011-01-26 | 华侨大学 | U-shaped steel reinforced concrete combination beam without mold plate |
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2014
- 2014-03-07 CN CN201410082980.4A patent/CN103835435B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| EP0345620A3 (en) * | 1988-06-07 | 1991-12-27 | Hans-Peter Dr.-Ing. Andrä | Concrete beam with t-beam form |
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Non-Patent Citations (1)
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