CN113338536A - Double-layer corrugated steel plate concrete combined column with built-in steel ribs - Google Patents
Double-layer corrugated steel plate concrete combined column with built-in steel ribs Download PDFInfo
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- CN113338536A CN113338536A CN202110564573.7A CN202110564573A CN113338536A CN 113338536 A CN113338536 A CN 113338536A CN 202110564573 A CN202110564573 A CN 202110564573A CN 113338536 A CN113338536 A CN 113338536A
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- corrugated steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 196
- 239000010959 steel Substances 0.000 title claims abstract description 196
- 239000004567 concrete Substances 0.000 title claims abstract description 60
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract description 13
- 238000007906 compression Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011381 foam concrete Substances 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Engineering & Computer Science (AREA)
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- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a double-layer corrugated steel plate concrete composite column with a built-in steel rib, which comprises a first corrugated steel plate, a second corrugated steel plate, the steel rib, a first filling body and a second filling body, wherein: the second corrugated steel plate is sleeved outside the first corrugated steel plate, the first corrugated steel plate is hollow and forms a first filling cavity, and the first corrugated steel plate and the second corrugated steel plate have the same corrugation direction; the steel rib is provided with two bearing ends which are oppositely arranged along the length direction, the connecting line direction of the two bearing ends is the steel rib bearing direction, the steel rib is arranged in the first filling cavity along the length direction of the first filling cavity, the first filling cavity is filled with the first filling body to fixedly connect the steel rib and the first corrugated steel, and the second filling cavity is filled with the second filling body to fixedly connect the first corrugated steel plate and the second corrugated steel plate. The invention improves the compression-resistant bearing capacity and strength of the combined column and enhances the ductility of the combined column.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a double-layer corrugated steel plate concrete composite column with built-in steel ribs.
Background
The steel pipe concrete composite column is a novel high-efficiency composite member developed in recent years, and is a composite member formed by filling concrete in a steel pipe and applying force to two materials together. By exerting the combined action, the steel tube concrete can fully exert the material performance of both steel and concrete. When the concrete in the steel pipe deforms, the steel pipe can provide a certain constraint effect for the concrete, so that the concrete is in a three-dimensional stress state, the brittleness performance of the concrete is further improved, and the strength of the concrete is improved to a certain extent. Meanwhile, the existence of the concrete delays or avoids the premature local buckling of the steel pipe, and can obviously improve the fire resistance of the steel pipe. The steel pipe can also be used as a template for concrete pouring, thereby greatly shortening the construction period.
The steel pipe formed by the common steel plate has the advantages that the middle pipe wall of the section of the steel pipe is slightly restrained from the outside, the middle steel plate of the steel pipe is easy to bend outwards locally under the condition of compression, the bearing capacity of the concrete filled steel pipe column is degraded, and the steel waste is easily caused by the method of avoiding local bending by increasing the thickness of the steel plate.
Researches find that the deformation of the corrugated steel plate along the corrugation direction is not limited by concrete, and the corrugated steel plate does not bear pressure when the combined column is pressed, so that the load-bearing capacity degradation behavior caused by local buckling of the middle pipe wall of the combined column does not exist. And the corrugated steel plate has large out-of-plane rigidity and is not easy to bulge under the action of the transverse expansion deformation of the core concrete, thereby increasing the annular effective constraint of the corrugated steel plate on the core concrete and further improving the compression-resistant bearing capacity of the combined column.
Therefore, there is a need to develop a corrugated steel plate concrete composite column which can effectively use steel materials and has good ductility.
Disclosure of Invention
The invention aims to overcome the technical defects and provides a double-layer corrugated steel plate concrete composite column with built-in steel ribs, which is used for solving the problem of poor bearing capacity of a steel pipe concrete column in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is as follows: the utility model provides a double-deck corrugated steel plate concrete combination column of built-in reinforcing bar, its includes first corrugated steel plate, second corrugated steel plate, reinforcing bar, first obturator and second obturator, wherein: the second corrugated steel plate is sleeved outside the first corrugated steel plate, the first corrugated steel plate is hollow and forms a first filling cavity, and the first corrugated steel plate and the second corrugated steel plate have the same corrugation direction; the steel rib is provided with two bearing ends which are oppositely arranged along the length direction, the connecting line direction of the two bearing ends is the steel rib bearing direction, the steel rib is arranged in the first filling cavity along the length direction of the first filling cavity, the first filling cavity is filled with the first filling body to fixedly connect the steel rib and the first corrugated steel, and the second filling cavity is filled with the second filling body to fixedly connect the first corrugated steel plate and the second corrugated steel plate.
Preferably, the wave crests of the first deck plate correspond to the wave troughs of the second deck plate.
Preferably, the double-layer corrugated steel plate concrete composite column with the built-in steel ribs further comprises studs, and the studs are arranged in the second filling cavities and are fixedly connected with the first corrugated steel plate and the second corrugated steel plate respectively.
Preferably, the width of the second filling cavity varies periodically along the corrugation direction of the first corrugated steel plate, and the studs are arranged on two sides of the second filling cavity with relatively wide width.
Preferably, the first deck plate and the second deck plate are arranged so that the corrugation direction thereof is oriented around the load bearing direction.
Preferably, the first deck plate and the second deck plate are arranged in parallel to the load bearing direction.
Preferably, the section of the steel rib is I-shaped or cross-shaped.
Preferably, the first deck plate and the second deck plate are formed in a trapezoidal shape.
Preferably, the first deck plate and the second deck plate have a substantially square cross section in the load-bearing direction.
Preferably, the first deck plate and the second deck plate have a substantially circular cross section in the load-bearing direction.
Compared with the prior art, the invention has the beneficial effects that: the steel pipe wall that wherein double-deck corrugated steel board is constituteed bears the load along the ripple direction little, can make corrugated steel board's intensity mainly provide the hoop restraint for the core concrete like this to improve the resistance to compression bearing capacity of core concrete greatly, make the resistance to compression bearing capacity of combination post improve by a wide margin. Meanwhile, the plane external rigidity of the corrugated steel plate is high, so that the steel pipe wall is not easy to bulge under the action of the transverse expansion deformation of the core concrete, the annular effective constraint of the corrugated steel plate on the core concrete is increased, the steel pipe plays a role of a hoop, the internal concrete is in a three-dimensional compression state, the compression resistance bearing capacity and strength of the combination column are improved, the ductility of the combination column is enhanced, materials are saved, and the construction cost is reduced.
Drawings
FIG. 1 is a front view of an embodiment 1 of a steel rib built-in double-layer corrugated steel plate concrete composite column provided by the invention;
FIG. 2 is a perspective view of an embodiment 1 of the steel rib built-in double-layer corrugated steel plate concrete composite column provided by the invention;
FIG. 3 is a front view of an embodiment 2 of the steel rib built-in double-layer corrugated steel plate concrete composite column provided by the invention;
FIG. 4 is a perspective view of an embodiment 2 of the steel rib built-in double-layer corrugated steel plate concrete composite column provided by the invention;
reference numerals: 1-a first corrugated steel plate, 2-a second corrugated steel plate, 3-a steel rib, 4-a first filling body, 5-a second filling body and 6-a stud.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
referring to fig. 1 and 2, the present embodiment provides a steel rib built-in double-layer corrugated steel plate concrete composite column, which includes a first corrugated steel plate 1, a second corrugated steel plate 2, a steel rib 3, a first filler 4 and a second filler 5, wherein:
the second corrugated steel plate 2 is sleeved outside the first corrugated steel plate 1, the first corrugated steel plate 1 is hollow to form a first filling cavity, and a second filling cavity is formed between the first corrugated steel plate 1 and the second corrugated steel plate 2.
The steel skeleton 3 is provided with two bearing ends which are oppositely arranged along the length direction, the bearing ends are respectively connected with the supporting structure and the supported structure, therefore, the connecting line direction of the two bearing ends is the bearing direction of the steel skeleton 3, the steel skeleton 3 is arranged in a first filling cavity along the length direction of the first filling cavity, the first filling cavity is filled with a first filling body 4 to fixedly connect the steel skeleton 3 and the first corrugated steel, and the second filling cavity is filled with a second filling body 5 to fixedly connect the first corrugated steel plate 1 and the second corrugated steel plate 2. Preferably, the first filler 4 is high performance concrete and the second filler 5 is lightweight foam concrete. The section of the steel rib 3 is in an I shape or a cross shape, and the bearing capacity of the steel rib 3 in the bearing direction is improved.
Preferably, this double-deck corrugated steel plate concrete combination column of built-in reinforcing bar still includes the peg 6, and the peg 6 sets up in the second fills the intracavity, and respectively with first corrugated steel plate 1 and 2 fixed connection of second corrugated steel plate, and here peg 6 can adopt welded connected mode to be connected with first corrugated steel plate 1 and second corrugated steel plate 2 respectively, and peg 6 is fixed by the concrete that the intracavity was filled to the second to connect first corrugated steel plate 1 and second corrugated steel plate 2, promote joint strength.
The first deck plate 1 and the second deck plate 2 have the same corrugation direction, and in this embodiment, the corrugation direction is arranged around the load-bearing direction. The first and second corrugated steel plates 1 and 2 may have a rectangular, triangular, trapezoidal, or the like corrugated shape, and the first and second corrugated steel plates 1 and 2 in the present embodiment preferably have a trapezoidal corrugated shape. The cross-sectional shape of the first and second deck plates 1, 2 is not limited, and may be rectangular, triangular, or the like, and the cross-sectional shape of the first and second deck plates 1, 2 in the load-bearing direction is preferably substantially square in the present embodiment. The corrugated steel plate adopted by the invention is a factory prefabricated steel plate, the plate thickness is 2-4mm, the wavelength is 160mm, and the wave height is 45 mm. The load that corrugated steel plate bore along the ripple direction is little, can know according to the VonMises yield criterion, can make corrugated steel plate's intensity mainly provide the hoop restraint for the core concrete like this to improve the resistance to compression bearing capacity of core concrete greatly, make the resistance to compression bearing capacity of combination post improve by a wide margin, and then material saving. Compared with the traditional steel pipe, the corrugated steel plate is adopted as the pipe wall of the steel pipe, so that the material performance of steel can be effectively exerted
As a preferred embodiment, the wave crests of the first corrugated steel plate 1 correspond to the wave troughs of the second corrugated steel plate 2, and the purpose is to enable the width of the second filling cavity to be periodically changed along the corrugation direction of the first corrugated steel plate 1, by adopting the installation form, the mutual constraint force between the corrugated steel plates and the concrete is enhanced, the elastic shear-resistant buckling load is much higher than that of the installation form of adopting two same corrugated steel plates with wave crests to wave crests and wave troughs to wave troughs, the out-of-plane buckling can be effectively prevented, the bearing capacity is higher than that of a single corrugated steel plate in shear strength, and the energy consumption effect is stronger. It is further preferable that the studs 6 are installed at both sides of the wide width, so that the space between the two steel plates is effectively utilized, and a longer stud 6 can be used at the time of installation, thereby improving the connection strength.
The invention provides a construction method of a double-layer corrugated steel plate concrete composite column with built-in steel ribs, which comprises the following steps: firstly, two corrugated steel plates prefabricated in a factory are oppositely arranged and are welded end to end according to the required shape to form a double-layer corrugated steel plate steel pipe wall, two symmetrical studs 6 are welded at each wave crest of each corrugated steel plate, then light foam concrete is filled in the two corrugated plates, and the concrete is maintained to meet the specified strength requirement, so that a complete prefabricated double-layer corrugated steel plate steel pipe wall is formed. The welding of buckled plate needs to accomplish closely seamless to prevent that the interior filling concrete slurry from spilling over and leading to structural strength's not up to standard. Secondly, placing steel ribs 3 at proper positions in the wall of the prefabricated double-layer corrugated steel plate, and finally pouring high-performance concrete into the wall of the double-layer corrugated steel plate, wherein the construction of the double-layer corrugated steel plate concrete combination column with the built-in steel ribs is regarded as being finished when the concrete meets the specified strength requirement.
Example 2:
referring to fig. 3 and 4, the embodiment 2 is substantially the same as the embodiment 1, and is not repeated here, except that: the first and second corrugated steel plates 1 and 2 are arranged in parallel to the load-bearing direction. In the present embodiment, the first and second deck plates 1 and 2 have a substantially circular cross section in the load-bearing direction.
In summary, the steel rib built-in double-layer corrugated steel plate concrete composite column provided by the invention has the advantages that the steel pipe wall formed by the double-layer corrugated steel plates bears small load along the corrugation direction, so that the strength of the corrugated steel plates mainly provides circumferential restraint for the core concrete, the compression-resistant bearing capacity of the core concrete is greatly improved, and the compression-resistant bearing capacity of the composite column is greatly improved. Meanwhile, the plane external rigidity of the corrugated steel plate is high, so that the steel pipe wall is not easy to bulge under the action of the transverse expansion deformation of the core concrete, the annular effective constraint of the corrugated steel plate on the core concrete is increased, the steel pipe plays a role of a hoop, the internal concrete is in a three-dimensional compression state, the compression resistance bearing capacity and strength of the combination column are improved, the ductility of the combination column is enhanced, materials are saved, and the construction cost is reduced.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a double-deck corrugated steel plate concrete combination column of built-in reinforcing bar which characterized in that, includes first corrugated steel board, second corrugated steel board, reinforcing bar, first obturator and second obturator, wherein:
the second corrugated steel plate is sleeved outside the first corrugated steel plate, the first corrugated steel plate and the second corrugated steel plate have the same corrugation direction, and are hollow to form a first filling cavity, and a second filling cavity is formed between the first corrugated steel plate and the second corrugated steel plate;
the steel rib is provided with two bearing ends which are oppositely arranged along the length direction, the connecting line direction of the two bearing ends is the bearing direction of the steel rib, the steel rib is arranged in the first filling cavity along the length direction of the first filling cavity, the first filling cavity is filled with a first filling body to fixedly connect the steel rib with the first corrugated steel, and the second filling cavity is filled with a second filling body to fixedly connect the first corrugated steel plate with the second corrugated steel plate.
2. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 1, wherein the wave crests of the first corrugated steel plate correspond to the wave troughs of the second corrugated steel plate.
3. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 2, further comprising a stud, wherein the stud is disposed in the second filling cavity and is respectively fixedly connected to the first corrugated steel plate and the second corrugated steel plate.
4. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 3, wherein the width of the second filling cavity varies periodically along the corrugation direction of the first corrugated steel plate, and the studs are arranged on two sides of the second filling cavity, which are relatively wide.
5. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 1, wherein the corrugation direction of the first corrugated steel plate and the corrugation direction of the second corrugated steel plate are arranged around the load-bearing direction.
6. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 1, wherein the corrugation direction of the first corrugated steel plate and the corrugation direction of the second corrugated steel plate are parallel to the load bearing direction.
7. The double-layer corrugated steel plate concrete composite column with the built-in steel ribs as recited in claim 1, wherein the steel ribs are I-shaped or cross-shaped in cross section.
8. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 1, wherein the first corrugated steel plate and the second corrugated steel plate are trapezoidal in corrugated shape.
9. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 1, wherein the first corrugated steel plate and the second corrugated steel plate have a substantially square cross section along the load-bearing direction.
10. The steel-rib-embedded double-layer corrugated steel plate concrete composite column as claimed in claim 1, wherein the first corrugated steel plate and the second corrugated steel plate have a substantially circular cross section along the load-bearing direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564573.7A CN113338536A (en) | 2021-05-24 | 2021-05-24 | Double-layer corrugated steel plate concrete combined column with built-in steel ribs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564573.7A CN113338536A (en) | 2021-05-24 | 2021-05-24 | Double-layer corrugated steel plate concrete combined column with built-in steel ribs |
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| CN113338536A true CN113338536A (en) | 2021-09-03 |
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| CN202110564573.7A Pending CN113338536A (en) | 2021-05-24 | 2021-05-24 | Double-layer corrugated steel plate concrete combined column with built-in steel ribs |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015632A (en) * | 2012-12-09 | 2013-04-03 | 中国矿业大学 | Corrugated steel plate confined concrete combination column and manufacturing method thereof |
| WO2014127401A1 (en) * | 2013-02-19 | 2014-08-28 | Monash University | Load bearing structures |
| CN106906951A (en) * | 2017-03-10 | 2017-06-30 | 哈尔滨工业大学深圳研究生院 | The concrete filled steel tube component and its processing method of a kind of steel tube confinement of sandwich |
| CN109098351A (en) * | 2018-08-31 | 2018-12-28 | 长江大学 | The disaster-ridden kind of joint safeguard function concrete filled steel tube based on deformation energy-absorbing principle |
| CN211057596U (en) * | 2019-09-11 | 2020-07-21 | 江苏高速公路工程养护技术有限公司 | Corrugated steel pipe reinforced concrete-filled steel tube pier |
-
2021
- 2021-05-24 CN CN202110564573.7A patent/CN113338536A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015632A (en) * | 2012-12-09 | 2013-04-03 | 中国矿业大学 | Corrugated steel plate confined concrete combination column and manufacturing method thereof |
| WO2014127401A1 (en) * | 2013-02-19 | 2014-08-28 | Monash University | Load bearing structures |
| CN106906951A (en) * | 2017-03-10 | 2017-06-30 | 哈尔滨工业大学深圳研究生院 | The concrete filled steel tube component and its processing method of a kind of steel tube confinement of sandwich |
| CN109098351A (en) * | 2018-08-31 | 2018-12-28 | 长江大学 | The disaster-ridden kind of joint safeguard function concrete filled steel tube based on deformation energy-absorbing principle |
| CN211057596U (en) * | 2019-09-11 | 2020-07-21 | 江苏高速公路工程养护技术有限公司 | Corrugated steel pipe reinforced concrete-filled steel tube pier |
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