CN204959967U - Hoop reinforcing concrete filled steel tube - Google Patents
Hoop reinforcing concrete filled steel tube Download PDFInfo
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- CN204959967U CN204959967U CN201520775033.3U CN201520775033U CN204959967U CN 204959967 U CN204959967 U CN 204959967U CN 201520775033 U CN201520775033 U CN 201520775033U CN 204959967 U CN204959967 U CN 204959967U
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- steel pipe
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Abstract
The utility model provides a hoop reinforcing concrete filled steel tube, by indulging muscle (1), stirrup (2), steel pipe (3), core concrete (4), steel rib (5) are common to be constituted, its characterized in that indulges muscle (1), stirrup (2) ligature or welding form the framework of steel reinforcement, core concrete (4) parcel framework of steel reinforcement, and fill in the inside of steel pipe (3), two vertical interval arrangements of steel pipe (3) and two are with the rib of raising to the higher plane of principle (5), steel rib (5) are closed the connection along cross -section hoop a week of steel pipe (3), steel rib (5) are as an organic whole with the wall connection of steel pipe (3), it arranges that the interval is not more than the external diameter or the length of side of steel pipe (3). The utility model discloses the structure becomes stifled into dredging, reduces directly to bear vertical load's steel pipe area, improves the effect efficiency of steel, the utility model discloses the structure is applicable to the vertical supporting member of different types of rridges, building.
Description
Technical field
The present invention relates to a kind of hoop and strengthen encased structures, be applied to the vertical member of all kinds of bridge, building, belong to field of civil engineering.
Background technology
As everyone knows, concrete compressive strength is high, and deformability is poor, and the resistance to tension of steel is strong, has good elastoplasticity, but when pressurized easy unstability and lose axial compression resistance ability.A kind of combining structure that concrete filled steel tube refers to fill concrete in steel pipe and formed, it can in conjunction with the advantage of both concrete and steel pipe, on the one hand, steel pipe forms lateral restraint to concrete, concrete anti-compression performance can be improved significantly, on the other hand, due to concrete existence, lateral support is formed to steel pipe, can stop or delay the unstability of steel pipe.Encased structures has the outstanding advantages such as bearing capacity is high, ductility good, anti-seismic performance is superior, easy construction.
Now there are some researches show, encased structures is when bearing shaft pressuring load, its bearing capacity is higher than corresponding steel pipe compression bearing and concrete compression bearing capacity sum, this is because the interaction between steel pipe and concrete makes the concrete bearing capacity of steel pipe inner core be improved, but, encased structures is when bearing load, steel pipe had both been subject to vertical shaft pressuring load effect, be subject to again the hoop tension effect that concrete expansion causes, easily under dual stressed effect, there is cripling in steel pipe, lose the effect of contraction to core concrete, therefore, the technology of encased structures field routine adopts very thick steel pipe to guarantee steel pipe partial stability, domestic and international specification all limits the minimum limit value of its external diameter or the length of side and the ratio of thickness to the application of concrete filled steel tube, to ensure the performance efficiency of encased structures.
For overcoming above-mentioned deficiency, the present invention proposes a kind of hoop and strengthens encased structures, become and block up as dredging, reduction directly may bear the steel pipe area of vertical load, the steel pipe area of saving is set to hoop steel rib, give full play to the hoop constraint effect of hoop steel rib to core concrete, improve the functioning efficiency of steel.
Summary of the invention
The object of this invention is to provide a kind of hoop and strengthen encased structures, solve steel pipe in common steel tube concrete structure and be both subject to vertical shaft pressuring load effect, be subject to again the hoop tension effect that concrete expansion causes, low to core concrete constraint efficiency, the technological deficiency of easy cripling, this structure, while having common steel tube concrete advantage, significantly improves the binding effect of steel, is applicable to the vertical supporting member of different types of rridges, building.
Technical scheme of the present invention: a kind of hoop strengthens encased structures, jointly be made up of vertical muscle, stirrup, steel pipe, core concrete, steel rib, it is characterized in that vertical muscle, stirrup colligation or welding form cage of reinforcement, core concrete parcel cage of reinforcement, and be filled in the inside of steel pipe, more than two and two steel ribs are arranged at the vertical interval of steel pipe, steel rib connected in closed along the section rings of steel pipe to one week, the outer wall of steel rib and steel pipe connects as one, and its arrangement pitch is not more than external diameter or the length of side of steel pipe.
Described a kind of hoop strengthens encased structures, it is characterized in that, the cross section of steel rib is the one in rectangle, trapezoidal, arc line shaped, and it forms closed cross section with the outer wall of steel pipe, and the outer wall of steel rib and steel pipe is welded to connect.
Described a kind of hoop strengthens encased structures, and it is characterized in that, core concrete is self-compaction slightly expanded concrete, and its 14 days limited expansion rates are not less than 0.00015.
Described a kind of hoop strengthens encased structures, and it is characterized in that, the cross section of its steel pipe is the one in circular cross-section, elliptic cross-section, rectangular cross-sectional, equilateral polygon.
In component of the present invention, the effect of vertical muscle provides anti-bending bearing capacity, the Main Function of steel pipe is for the concreting of structure provides side direction template, and bear vertical load, for concrete provides hoop constraint power, hoop steel rib strengthens steel pipe hoop, strong lateral restraint effect is played to core concrete, improve concrete intensity and ductility, and owing to arranging structure in the interval of steel rib, steel rib does not bear the effect yet can not bearing vertical load, quantitative comparative analysis: steel are used for pure hoop constraint effect, it causes the raising of core concrete bearing capacity to be about 2 times that steel pipe directly bears vertical bearing capacity, in common steel tube concrete, the bearing power increase of steel pipe to core concrete 1.3 times of being equivalent to that steel pipe directly bears vertical bearing capacity, compare, structure of the present invention is very remarkable to the raising of steel functioning efficiency.The present invention, relative to common steel tube concrete structure, has difference in essence, has effect useful as follows:
(1) steel pipe is mainly core concrete and provides side direction template, and bears vertical load, and for concrete provides hoop constraint power, structure construction is convenient.
(2) steel rib significantly improves the effect of contraction efficiency of steel, and relative to common steel tube concrete structure, steel constraint can improve about 1.5 times to the contribution of compression bearing.
(3) take full advantage of the advantage of multiple material, and produce the abnormal result be combined with each other.
Accompanying drawing illustrates:
Fig. 1 is that straight-flanked ring is to enhancing circular section encased structures longitudinal section;
Fig. 2 is that straight-flanked ring is to enhancing circular section encased structures A-A cross sectional representation;
Fig. 3 is that straight-flanked ring is to enhancing circular section encased structures B-B cross sectional representation;
Fig. 4 is that keystone ring is to enhancing circular section encased structures longitudinal section;
Fig. 5 is that arc line shaped hoop strengthens circular section encased structures longitudinal section.
In accompanying drawing 1 ~ accompanying drawing 5,1 is vertical muscle; 2 is stirrup; 3 is steel pipe; 4 is core concrete; 5 is steel rib.
Detailed description of the invention:
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
As Figure 1-Figure 5, the present invention proposes a kind of hoop and strengthens encased structures, jointly be made up of vertical muscle 1, stirrup 2, steel pipe 3, core concrete 4, steel rib 5, it is characterized in that vertical muscle 1, stirrup 2 colligation or welding form cage of reinforcement, core concrete 4 wraps up cage of reinforcement, and be filled in the inside of steel pipe 3, more than two and two steel ribs 5 are arranged at the vertical interval of steel pipe 3, steel rib 5 connected in closed along the section rings of steel pipe 3 to one week, steel rib 5 connects as one with the outer wall of steel pipe 3, and its arrangement pitch is not more than external diameter or the length of side of steel pipe 3.
A kind of hoop strengthens encased structures, it is characterized in that, the cross section of steel rib 5 is the one in rectangle, trapezoidal, arc line shaped, and it forms closed cross section with the outer wall of steel pipe 3, and the outer wall of steel rib 5 and steel pipe 3 is welded to connect.
A kind of hoop strengthens encased structures, and it is characterized in that, core concrete 4 is self-compaction slightly expanded concrete, and its 14 days limited expansion rates are not less than 0.00015.
A kind of hoop strengthens encased structures, and it is characterized in that, the cross section of its steel pipe 3 is the one in circular cross-section, elliptic cross-section, rectangular cross-sectional, equilateral polygon.
In concrete enforcement (as Fig. 1-Fig. 5), first process steel pipe 3, more than two and two steel ribs 5 are arranged at the vertical interval of steel pipe 3, steel rib 5 connected in closed along the section rings of steel pipe 3 to one week, steel rib 5 is welded to connect with the outer wall of steel pipe 3 and is integrated, its arrangement pitch is not more than external diameter or the length of side of steel pipe 3, the cross sectional shape of steel rib 5 can adopt rectangle (as Fig. 1), trapezoidal (as Fig. 4), arc line shaped (as Fig. 5), in enforcement, colligation or the vertical muscle 1 of welding, stirrup 2 forms cage of reinforcement, to be with the steel pipe 3 of steel rib 5 to be template concreting, core concrete 4 should add micro-expanding agent, form slightly expanded concrete, namely complete a kind of hoop and strengthen encased structures.
Claims (4)
1. a hoop strengthens encased structures, by vertical muscle (1), stirrup (2), steel pipe (3), core concrete (4), steel rib (5) is formed jointly, it is characterized in that vertical muscle (1), stirrup (2) colligation or welding form cage of reinforcement, core concrete (4) parcel cage of reinforcement, and be filled in the inside of steel pipe (3), more than two and two steel ribs (5) are arranged at the vertical interval of steel pipe (3), steel rib (5) connected in closed along the section rings of steel pipe (3) to one week, steel rib (5) connects as one with the outer wall of steel pipe (3), its arrangement pitch is not more than external diameter or the length of side of steel pipe (3).
2. a kind of hoop according to claim 1 strengthens encased structures, it is characterized in that, the cross section of steel rib (5) is the one in rectangle, trapezoidal, arc line shaped, the outer wall of itself and steel pipe (3) forms the cross section closed, and steel rib (5) is welded to connect with the outer wall of steel pipe (3).
3. a kind of hoop according to claim 1 strengthens encased structures, and it is characterized in that, core concrete (4) is self-compaction slightly expanded concrete, and its 14 days limited expansion rates are not less than 0.00015.
4. a kind of hoop according to claim 1 strengthens encased structures, and it is characterized in that, the cross section of its steel pipe (3) is the one in circular cross-section, elliptic cross-section, rectangular cross-sectional, equilateral polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775033.3U CN204959967U (en) | 2015-09-29 | 2015-09-29 | Hoop reinforcing concrete filled steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775033.3U CN204959967U (en) | 2015-09-29 | 2015-09-29 | Hoop reinforcing concrete filled steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204959967U true CN204959967U (en) | 2016-01-13 |
Family
ID=55055042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520775033.3U Expired - Fee Related CN204959967U (en) | 2015-09-29 | 2015-09-29 | Hoop reinforcing concrete filled steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204959967U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898655A (en) * | 2019-03-26 | 2019-06-18 | 上海息数建筑科技有限公司 | Support frame and support frame |
| CN115288364A (en) * | 2022-07-04 | 2022-11-04 | 华南理工大学 | Steel pipe concrete column with local high-strength ribs and built-in stirrups and construction method thereof |
-
2015
- 2015-09-29 CN CN201520775033.3U patent/CN204959967U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898655A (en) * | 2019-03-26 | 2019-06-18 | 上海息数建筑科技有限公司 | Support frame and support frame |
| CN115288364A (en) * | 2022-07-04 | 2022-11-04 | 华南理工大学 | Steel pipe concrete column with local high-strength ribs and built-in stirrups and construction method thereof |
| CN115288364B (en) * | 2022-07-04 | 2023-08-22 | 华南理工大学 | Concrete filled steel tube column with local Gao Jiangle and built-in stirrups and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180808 Address after: 212004 No. 16 Xianlin East Road, Baohua Town, Jurong City, Zhenjiang, Jiangsu. Patentee after: Zhenjiang Heng An Civil Technology Co., Ltd. Address before: No. 159, dragon pan Road, Nanjing, Jiangsu Patentee before: Nanjing Forestry University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20180929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |