CN203412194U - Compound concrete-filled steel tubular column - Google Patents
Compound concrete-filled steel tubular column Download PDFInfo
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- CN203412194U CN203412194U CN201320327263.4U CN201320327263U CN203412194U CN 203412194 U CN203412194 U CN 203412194U CN 201320327263 U CN201320327263 U CN 201320327263U CN 203412194 U CN203412194 U CN 203412194U
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- concrete
- steel tube
- steel pipe
- tubular column
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Abstract
A compound concrete-filled steel tubular column comprises a square steel tube, a spiral seam circular steel tube and concrete; the spiral seam circular steel tube is arranged inside the square steel tube; the concrete is poured into both the square steel tube and the spiral seam circular steel tube, so that the compound concrete-filled steel tubular column is formed; the spiral seam circular steel tube is formed by rolling a steel plate in a spiral manner; spiral slab joints are formed on the tube body, the slab joints at the two ends of the spiral seam circular steel tube are connected through welding seams, and the slab joints at the middle part are not welded. The compound concrete-filled steel tubular column overcomes the defects of a square steel tube concrete column and a circular steel tube concrete column, and has the advantages of high load-carrying capacity, good plasticity and tenacity, good fireproof performance, simple node structure and the like.
Description
Technical field
The utility model relates to the steel core concrete column field of mainly bearing vertical load.
Background technology
At present, concrete filled steel tube is mainly used to make the post of bearing vertical load.Concrete-filled steel square tubular column have plasticity and good toughness, fire resistance better, the advantage such as bean column node simple structure, but square steel pipe is less to the concrete effect of contraction in inside, concrete strength improves few, and the bearing capacity of post improves few with respect to the reinforced concrete post of identical reinforcement ratio.The round steel pipe of concrete-filled circular steel tube column has good effect of contraction to inner concrete, the advantage such as therefore have that bearing capacity is high, plasticity and good toughness, fire resistance are better, but bean column node complex structure.No matter concrete-filled steel square tubular column, or concrete-filled circular steel tube column, because steel pipe is in concrete outside, without flameproof protection in the situation that, all can not reach the fire endurance requirement of regulation and stipulation, need to carry out flameproof protection.In order to overcome, concrete-filled steel square tubular column is less to inner concrete effect of contraction, concrete-filled circular steel tube column joint structure is complicated and need to carry out the shortcomings such as flameproof protection, needs that a kind of supporting capacity is high, plasticity and good toughness, fire resistance are good, the simple steel core concrete column of joint structure.
Utility model content
In order to overcome the shortcoming of concrete-filled steel square tubular column and concrete-filled circular steel tube column, the utility model discloses a kind of compound concrete-filled tubular column, and this post has the advantages such as supporting capacity is high, plasticity and good toughness, fire resistance is good, joint structure is simple.
The utility model solves the technical scheme that its technical problem adopts: compound concrete-filled tubular column is comprised of square steel pipe, spiral seam round steel pipe and concrete, in square steel pipe inside, spiral seam round steel pipe is set, and in the inside of square steel pipe and spiral seam round steel pipe concrete perfusions all.Spiral seam round steel pipe is rolled and is formed by steel plate spirality, forms spiral plate seam on pipe shaft, and the plate seam at spiral seam round steel pipe two ends couples together by weld seam, and the plate seam at middle part does not weld.The plate seam at spiral seam round steel pipe middle part does not weld, can reduce the vertical load that steel pipe is born, according to Mises yield criterion, vertical pressure reduces laterally resistance to tension and strengthens, therefore, spiral seam round steel pipe higher than smooth bar pipe, can be improved the force and deformation performance of post to concrete horizontal restrain ability, and just can bring into play the effect of contraction of steel pipe at the load-bearing initial stage.Under the effect of contraction of spiral seam round steel pipe, concrete intensity is improved significantly, so the bearing capacity of compound concrete-filled tubular column is higher.Spiral seam round steel pipe is positioned at compound concrete-filled tubular column inside, is subject to the protection of outer concrete, and in fire process, programming rate is slow, still has higher bearing capacity and good effect of contraction, can significantly improve the anti-fiery ability of post.Because skin is square steel pipe, bean column node is easily processed, and joint structure is simple.
Compound concrete-filled tubular column of the present utility model has overcome the shortcoming of concrete-filled steel square tubular column and concrete-filled circular steel tube column; there is the advantages such as supporting capacity is high, plasticity and good toughness, fire resistance is good, joint structure is simple; utilize the fire resistance of compound concrete-filled tubular column self; just can meet certain fire endurance requirement; thereby cancel or reduce flameproof protection measure; simplify working procedure, reduce building costs and maintenance cost, obtain larger economic and social benefit.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is axonometric drawing of the present utility model.
Fig. 2 is cross-sectional view of the present utility model.
Fig. 3 is spiral seam round steel pipe constructional drawing of the present utility model.
In figure: 1-square steel pipe, 2-spiral seam round steel pipe, 3-concrete, 4-plate seam, 5-weld seam.
The specific embodiment
As shown in Figure 1-2, a kind of compound concrete-filled tubular column, is comprised of square steel pipe (1), spiral seam round steel pipe (2) and concrete (3).In square steel pipe (1) inside, spiral seam round steel pipe (2) is set, and in the inside of square steel pipe (1) and spiral seam round steel pipe (2) concrete perfusions (3) all, form compound concrete-filled tubular column.The plate seam of spiral seam round steel pipe (2) end couples together by weld seam (5).
As shown in Figure 3, spiral seam round steel pipe (2) is rolled and is formed by steel plate spirality, forms spiral plate seam (4) on pipe shaft, and the plate seam (4) at spiral seam round steel pipe (2) two ends couples together by weld seam (5), and the plate seam (4) at middle part does not weld.
Claims (2)
1. a compound concrete-filled tubular column, is comprised of square steel pipe, spiral seam round steel pipe and concrete, it is characterized in that: in square steel pipe inside, spiral seam round steel pipe is set, and in the inside of square steel pipe and spiral seam round steel pipe concrete perfusions all.
2. compound concrete-filled tubular column according to claim 1, is characterized in that: the plate seam at spiral seam round steel pipe two ends couples together by weld seam, and the plate seam at middle part does not weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320327263.4U CN203412194U (en) | 2013-06-07 | 2013-06-07 | Compound concrete-filled steel tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320327263.4U CN203412194U (en) | 2013-06-07 | 2013-06-07 | Compound concrete-filled steel tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412194U true CN203412194U (en) | 2014-01-29 |
Family
ID=49975090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320327263.4U Expired - Fee Related CN203412194U (en) | 2013-06-07 | 2013-06-07 | Compound concrete-filled steel tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412194U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967209A (en) * | 2014-04-12 | 2014-08-06 | 北京工业大学 | Combined column formed by embedding round steel tube filled with recycled concrete in square steel tube filled with concrete and reinforced by spiral hoop |
| CN112832825A (en) * | 2021-01-19 | 2021-05-25 | 华北理工大学 | Assembled hollow sandwich concrete filled steel tube arch center and construction method thereof |
-
2013
- 2013-06-07 CN CN201320327263.4U patent/CN203412194U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967209A (en) * | 2014-04-12 | 2014-08-06 | 北京工业大学 | Combined column formed by embedding round steel tube filled with recycled concrete in square steel tube filled with concrete and reinforced by spiral hoop |
| CN112832825A (en) * | 2021-01-19 | 2021-05-25 | 华北理工大学 | Assembled hollow sandwich concrete filled steel tube arch center and construction method thereof |
| CN112832825B (en) * | 2021-01-19 | 2022-04-12 | 华北理工大学 | Assembled hollow sandwich concrete filled steel tube arch center and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20150607 |
|
| EXPY | Termination of patent right or utility model |