CN110359353A - A kind of Steel-concrete Combined Beam Structures - Google Patents
A kind of Steel-concrete Combined Beam Structures Download PDFInfo
- Publication number
- CN110359353A CN110359353A CN201910516399.1A CN201910516399A CN110359353A CN 110359353 A CN110359353 A CN 110359353A CN 201910516399 A CN201910516399 A CN 201910516399A CN 110359353 A CN110359353 A CN 110359353A
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- CN
- China
- Prior art keywords
- steel
- concrete
- web
- welded
- flange plate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 230000007935 neutral effect Effects 0.000 claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 claims abstract description 12
- 239000003351 stiffener Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 229910000746 Structural steel Inorganic materials 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract 1
- 238000010008 shearing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The present invention relates to a kind of Steel-concrete Combined Beam Structures, which is made of prefabricated steel skeleton (I) and armored concrete (II)；On the inside of web (2), the upper spacer (6) being close to, lower clapboard (7) is respectively welded below the neutral axis (11) of beam section；In hogging moment area, upper spacer (6), lower clapboard (7) are gone to and are vertically welded on bottom plate (1)；Transverse stiffener (8) are arranged in top flange plate (3) top surface；After having set up prefabricated steel skeleton (I) at the scene, armored concrete (II) is arranged in the open cavity on the inside of web (2) and top flange plate top surface, constitutes a kind of steel-concrete composite beam.Steel-concrete linkage interface switching performance of the invention is good, hogging moment area concrete is not easily susceptible to cracking, convenient and quick construction, has good technical economic benefit.
Description
Technical field
The invention belongs to steel-concrete combined structure field, in particular to a kind of steel-concrete composite beam.
Background technique
Traditional i shaped steel concrete combination beam is a kind of to connect I-shaped girder and concrete slab by shearing
The steel concrete composite structure that fitting is joined together to form, has that rigidity is big, intensity is high, it is excellent to save material, quick construction etc.
Point is widely used on the bridge types such as simply supported girder bridge, continuous bridge, arch bridge.
I shaped steel concrete combination beam is primarily present deleterious situation in two in stress: one be in continuous bridge,
The concrete slab of hogging moment area is relatively thin, and the crack easy to breed under hogging moment effect at fulcrum causes floorings to crack, because
This needs to arrange a large amount of reinforcing bar in hogging moment area；The other is the connectivity of steel concrete linkage interface is poor, need to arrange
Complicated shearing connector structure guarantees the transmitting of longitudinal shear and prevents concrete slab from starting from steel beam surface.
Patent content
Technical problem: to solve the above problems, the present invention provides a kind of steel-concrete composite beam, by web by
Pressure area arranges armored concrete, increases the contact area of concrete and steel skeleton, to reduce steel-concrete linkage interface
Shearing avoids the shearing connector structure complicated in the setting of steel-concrete linkage interface；Simultaneously in hogging moment area web part
Total cross-section concrete perfusion, increases section rigidity, reduces pulling force suffered by the concrete of hogging moment area；In addition, steel skeleton and
Its attached construction can be prefabricated in the factory, and as support when constructing, easy for construction.
Technical solution: in order to achieve the above object, a kind of technical solution of steel-concrete composite beam of the invention is as follows:
A kind of Steel-concrete Combined Beam Structures of the invention are made of prefabricated steel skeleton and armored concrete；It is described prefabricated
Steel skeleton is by by bottom plate, web, top flange plate, Welded-Stud Conectors, shear connector, upper spacer, lower clapboard, transverse stiffener group
At；On the inside of the web, the upper spacer being close to, lower clapboard are respectively welded below the neutral axis of beam section；In hogging moment area,
Upper spacer, lower clapboard are gone to and are vertically welded on bottom plate；Transverse stiffener is arranged in top flange plate top surface；It has set up at the scene
After prefabricated steel skeleton, in the open cavity on the inside of web and armored concrete is arranged in top flange plate top surface, and it is mixed to constitute a kind of steel-
Solidifying soil combination beam.
The web and top flange plate is that factory rolls one-time formed L-type steel, and web and bottom plate pass through welded connecting.
On the inside of the web, Welded-Stud Conectors are welded with above neutral axis.
On the inside of hogging moment area, the web, it is disposed with aperture connector above neutral axis, is welded below neutral axis
It is connected to Welded-Stud Conectors.
The top flange plate top surface is disposed with shear connector.
The pre-manufactured steel framework material can also be fibre reinforced composites.
The transverse stiffener by welding or is bolted with top flange plate top surface.
The shear connector be Welded-Stud Conectors, PBL connector, angle iron connecting piece, bendbor connectors and they
Combining form.
The utility model has the advantages that compared with existing scheme, the beneficial effects of the present invention are:
1, it is only poured in the cavity on the upside of web internal neutral axis mixed in the present invention by the way that partition is arranged inside web
Solidifying soil, on the one hand increases the contact area of concrete and girder steel, significantly reduces the shearing of steel-concrete linkage interface,
Steel-concrete surface break-off caused by avoiding because of shear connector corrosion, fracture, increases structure in steel-concrete
The safety of linkage interface；On the other hand the anti-bending bearing capacity of structure is also enhanced, avoids and concrete is arranged in tensile region,
Reduce the self weight of structure.
2, Negative Bending is increased by the total cross-section casting concrete inside the web of hogging moment area in the present invention
Bending stiffness improve hogging moment area to significantly reduce the pulling force being subject at the top of hogging moment area concrete slab
The force-bearing situation of concrete slab reduces the steel bar arrangement demand of hogging moment area, it is suppressed that the development in crack.
3, the present invention in I-steel skeleton can be prefabricated in the factory, at the scene directly lift, and as construct when
Support, then casting concrete, it is easy for construction.
Detailed description of the invention
Fig. 1 is Steel-concrete Combined Beam Structures overall schematic of the invention,
Fig. 2 is Steel-concrete Combined Beam Structures separate type schematic diagram of the invention,
Fig. 3 is prefabricated steel skeleton schematic diagram of the invention,
The position Fig. 4 hogging moment area Steel-concrete Combined Beam Structures separate type schematic diagram of the invention,
Fig. 5 is hogging moment area aperture connector schematic diagram.
Have in attached drawing: prefabricated steel skeleton I, armored concrete II；Bottom plate 1, web 2, top flange plate 3, Welded-Stud Conectors 4,
Shear connector 5, upper spacer 6, lower clapboard 7, transverse stiffener 8, aperture connector 9, tension reinforcement 10, neutral axis 11.
Specific embodiment
The specific embodiment that the present invention is further explained with reference to the accompanying drawing.
As shown in Figure 1, the present invention is a kind of Steel-concrete Combined Beam Structures, by prefabricated steel skeleton I and armored concrete II
Composition.As shown in Fig. 2, web 2 and top flange plate 3 are one block of integrally formed L-type plate, on the surface of web 2 and top flange plate 3
Welded-Stud Conectors 4 and shear connector 5 are respectively welded, weld upper spacer 6 and web 2 below neutral axis；Another coxostermum
On peg be arranged symmetrically, lower clapboard 7 is welded on to the lower section of 6 height of upper spacer；Two blocks of L-type plates are symmetrically welded at bottom plate again
On, finally top flange plate top surface weld transverse stiffener 8, ultimately form prefabricated steel skeleton I as shown in Figure 3, at this time on every
Plate 6 is close together with lower clapboard 7, and closed cavity is formed below the partition inside web.
As shown in figure 4, hogging moment area part, the upper spacer 6 of two sides, lower clapboard 7 are gone to and are vertically welded on bottom plate 1,
Aperture connector 9, the weld stud connector 4 below neutral axis 11, so that web are welded above 2 inside neutral axis 11 of web
2 inside total cross-sections become hole cavity-formed.
When site operation, prefabricated steel skeleton I is welded first, after erection, arranges steel mesh in top flange plate top surface, and
At hogging moment area, longitudinal tension reinforcement 10 is put into aperture connector 9, assists hogging moment area concrete in tension；Finally exist
Armored concrete II is arranged in the open cavity part of web and top flange plate top surface, ultimately forms a kind of steel-concrete composite beam
Structure.
Claims (8)
1. a kind of Steel-concrete Combined Beam Structures, it is characterised in that: the combined beam structure is mixed by prefabricated steel skeleton (I) and reinforcing bar
Solidifying soil (II) composition；The prefabricated steel skeleton (I) by by bottom plate (1), web (2), top flange plate (3), Welded-Stud Conectors (4),
Shear connector (5), upper spacer (6), lower clapboard (7), transverse stiffener (8) composition；On the inside of the web (2), in beam section
Neutral axis (11) below the upper spacer (6) being close to, lower clapboard (7) is respectively welded；In hogging moment area, by upper spacer (6), under
Partition (7), which is gone to, to be vertically welded on bottom plate (1)；Transverse stiffener (8) are arranged in top flange plate (3) top surface；It sets up at the scene
After complete prefabricated steel skeleton (I), armored concrete (II) is arranged in the open cavity on the inside of web (2) and top flange plate top surface,
Constitute a kind of steel-concrete composite beam.
2. a kind of steel-concrete composite beam as described in claim 1, it is characterised in that: the web (2) and top flange plate
(3) one-time formed L-type steel is rolled for factory, web (2) and bottom plate (1) pass through welded connecting.
3. a kind of steel-concrete composite beam as described in claim 1, it is characterised in that: on the inside of the web (2), in
Property axis (11) above be welded with Welded-Stud Conectors (4).
4. a kind of steel-concrete composite beam as described in claim 1, it is characterised in that: in hogging moment area, the web
(2) inside is disposed with aperture connector (9) above neutral axis (11), is welded with Welded-Stud Conectors below neutral axis (11)
(4)。
5. a kind of steel-concrete composite beam as described in claim 1, it is characterised in that: top flange plate (3) the top surface arrangement
There are shear connector (5).
6. a kind of steel-concrete composite beam as described in claim 1, it is characterised in that: described prefabricated steel skeleton (I) material
It can also be fibre reinforced composites.
7. a kind of steel-concrete composite beam as described in claim 1, it is characterised in that: the transverse stiffener (8) with it is upper
Flange plate (3) top surface is by welding or is bolted.
8. a kind of steel-concrete composite beam as claimed in claim 5, it is characterised in that: the shear connector (5) is bolt
Follow closely connector, PBL connector, angle iron connecting piece, bendbor connectors and their combination form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516399.1A CN110359353A (en) | 2019-06-14 | 2019-06-14 | A kind of Steel-concrete Combined Beam Structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516399.1A CN110359353A (en) | 2019-06-14 | 2019-06-14 | A kind of Steel-concrete Combined Beam Structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110359353A true CN110359353A (en) | 2019-10-22 |
Family
ID=68217313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910516399.1A Pending CN110359353A (en) | 2019-06-14 | 2019-06-14 | A kind of Steel-concrete Combined Beam Structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359353A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593845A (en) * | 2020-06-24 | 2020-08-28 | 中南大学 | Internal variable cross-section steel-concrete composite structure simply supported beam |
| CN112482187A (en) * | 2020-11-03 | 2021-03-12 | 中铁大桥勘测设计院集团有限公司 | Butt-joint prefabricated combination beam and construction method |
| CN113356010A (en) * | 2021-05-15 | 2021-09-07 | 中建路桥集团有限公司 | Steel-concrete combined beam bridge capable of being installed quickly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100943823B1 (en) * | 2009-10-09 | 2010-02-25 | 한우물중공업(주) | Girder compounded with the concrete and steel |
| KR101483362B1 (en) * | 2013-07-09 | 2015-01-15 | 경기대학교 산학협력단 | Steel concrete composite beam using profiled plate |
| CN107354856A (en) * | 2017-07-27 | 2017-11-17 | 长安大学 | A kind of steel-concrete combination beam of groove profile top flange plate |
| CN108265883A (en) * | 2018-03-29 | 2018-07-10 | 攀枝花学院 | A kind of wine cup shape Section of Steel-concrete Composite Beam and its construction method |
| CN210636679U (en) * | 2019-06-14 | 2020-05-29 | 东南大学 | Steel-concrete composite beam structure |
-
2019
- 2019-06-14 CN CN201910516399.1A patent/CN110359353A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100943823B1 (en) * | 2009-10-09 | 2010-02-25 | 한우물중공업(주) | Girder compounded with the concrete and steel |
| KR101483362B1 (en) * | 2013-07-09 | 2015-01-15 | 경기대학교 산학협력단 | Steel concrete composite beam using profiled plate |
| CN107354856A (en) * | 2017-07-27 | 2017-11-17 | 长安大学 | A kind of steel-concrete combination beam of groove profile top flange plate |
| CN108265883A (en) * | 2018-03-29 | 2018-07-10 | 攀枝花学院 | A kind of wine cup shape Section of Steel-concrete Composite Beam and its construction method |
| CN210636679U (en) * | 2019-06-14 | 2020-05-29 | 东南大学 | Steel-concrete composite beam structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593845A (en) * | 2020-06-24 | 2020-08-28 | 中南大学 | Internal variable cross-section steel-concrete composite structure simply supported beam |
| CN112482187A (en) * | 2020-11-03 | 2021-03-12 | 中铁大桥勘测设计院集团有限公司 | Butt-joint prefabricated combination beam and construction method |
| CN113356010A (en) * | 2021-05-15 | 2021-09-07 | 中建路桥集团有限公司 | Steel-concrete combined beam bridge capable of being installed quickly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |