CN102409808A - Steel tube concrete superposed column with mild steel casing outer packed concrete at bottom and preparation method thereof - Google Patents
Steel tube concrete superposed column with mild steel casing outer packed concrete at bottom and preparation method thereof Download PDFInfo
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- CN102409808A CN102409808A CN2011103854768A CN201110385476A CN102409808A CN 102409808 A CN102409808 A CN 102409808A CN 2011103854768 A CN2011103854768 A CN 2011103854768A CN 201110385476 A CN201110385476 A CN 201110385476A CN 102409808 A CN102409808 A CN 102409808A
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Abstract
The invention relates to a steel tube concrete superposed column with a mild steel casing outer packed concrete at bottom and a preparation method thereof, which comprises an internal steel tube (1), a steel tube internal concrete (2), a steel tube external concrete (4), a longitudinal reinforcement (5), a reinforcement stirrup (6) and a steel tube casing (3).The invention is a multiple combinations confined steel tube concrete superposed column which combines the steel tube and the concrete, the internal steel tube concrete and the external reinforced concrete, the bottom mild steel casing and the internal steel tube; the bottom mild steel casing (3) is capable of increasing horizontal bearing capacity and vertical bearing capacity of the superposed column, ductibility and energy dissipation capacity. Because the damage to the superposed column generally occurs at the root of the superposed column, therefore strengthening root can reduce the sectional area and increase the utilization area, so that the amount of the concrete is decreased, the self-weight of the structure is mitigated, the energy consumption of building is reduced. Under the condition of same steel consumption, the invention provides more economic benefit.
Description
Technical field
The present invention relates to a kind of novel steel tube concrete superposed column, the steel tube concrete superposed column and the practice of particularly a kind of bottom band mild steel sleeve pipe external wrapping concrete.
Background technology
Along with the development of production technology and the raising of people's living standard, people also improve the requirement of all kinds of buildings day by day, and safety, the comfortableness of structure all had certain requirement.Reinforced concrete post and the concrete filled steel tube applied more and more in all kinds of high levels and super highrise building, and its superiority is respectively arranged.Reinforced concrete post has been given full play to reinforcing bar and concrete advantage separately, has good seismic resistance and fire retardant anticorrosion performance; Steel core concrete column has overcome the easy shortcoming that cripling takes place of steel pipe, simultaneously concrete is played effect of contraction, has given full play to steel pipe and concrete advantage.
Reinforced concrete post and steel core concrete column are in widespread adoption, and its shortcoming also manifests day by day.The sectional dimension of reinforced concrete post is bigger, has taken usage space, and deformability is limited; The fireproof performance of steel core concrete column is relatively poor; Appearing to a certain extent of steel tube concrete superposed column to we have solved this problem, but in superelevation layer structure, the sectional dimension of common steel tube concrete superposed column is still very big, and structural damage focuses mostly in the bottom of steel tube concrete superposed column.This strengthens design with regard to requiring us to the bottom of superposed column, gives full play to the anti-seismic performance of material, guarantees the safety of structure.
Summary of the invention
Technical problem to be solved by this invention is the anti-vibration defense lines that increases steel tube concrete superposed column, improves its anti-seismic performance.The present invention has proposed the steel tube concrete superposed column and the practice of a kind of bottom band mild steel sleeve pipe external wrapping concrete in order to address this problem.
The technical scheme that the present invention adopts is:
The steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete is characterized in that: said superposed column comprises inner steel pipe, steel duct concrete, the outside concrete of steel pipe, vertical muscle, stirrup and mild steel sleeve pipe; Inner steel duct is perfused with the steel duct concrete, and inner steel pipe outside is perfused with the outside concrete of steel pipe, is embedded with vertical muscle and stirrup in the outside concrete of steel pipe; The tube wall outside, bottom of inner steel pipe is enclosed with the mild steel sleeve pipe, the mild steel sleeve pipe put in the bottom ground or basic end face and with its anchoring.Its anchorage length should meet designing requirement.
Said steel tube concrete superposed column is rectangle or circular cross-section.
Said inner steel pipe is rectangular steel pipe or round steel pipe.
Said mild steel sleeve pipe height above ground level or basic end face is 1.0h, and wherein, h is the diameter of inner steel pipe circular cross-section or the long limit size of square-section.Just strengthened the plastic hinge territory of steel tube concrete superposed column bottom, delayed or avoided the destruction of steel tube concrete superposed column bottom, given full play to its seismic bearing capacity and energy dissipation capacity, made it under geological process, show more excellent performance.
The corresponding position of said inner steel pipe is reserved with the air vent of some.It is closely knit that concrete can be built, and the inside and outside concrete of steel pipe is connected as one.
Said mild steel sleeve pipe is connected fixing with inner steel pipe through bolt.
The thickness of said mild steel sleeve pipe is not less than the thickness of inner steel pipe.
The practice of the steel tube concrete superposed column of above-mentioned bottom band mild steel sleeve pipe external wrapping concrete, production order is following:
1) makes inner steel pipe and the mild steel sleeve pipe bottom it as requested, in inner steel pipe full height scope, reserve the air vent of some, so that the outside concrete of steel duct concrete and steel pipe can be connected as a single entity through this air vent;
2) the two-way reservation bolt hole according to actual needs in the corresponding position of mild steel sleeve pipe of inner steel pipe and bottom;
3) lateral surface at the bolt hole place that inner steel pipe is reserved welds corresponding nut;
4) with the mild steel casing pipe sleeve in the tube wall outside, inner steel pipe bottom, and the mild steel sleeve pipe of inner steel pipe and bottom carried out correct positioning, penetrate bolt, and pass through the nut screwing clamping bolt of inner steel pipe lateral surface;
5) the vertical muscle and the stirrup in the colligation outside form steel mesh reinforcement;
6) reserve the certain protection layer thickness in the steel mesh reinforcement outside, a template;
7) concrete perfusion in template is the steel tube concrete superposed column that mild steel sleeve pipe external wrapping concrete is with in the bottom after the moulding.Because inner steel pipe and mild steel sleeve pipe are wrapped up by outside concrete, can play the cuff effect.
The steel tube concrete superposed column and the practice of bottom of the present invention band mild steel sleeve pipe external wrapping concrete, under the frequently occurred earthquake effect, steel tube concrete superposed column is stressed less, at this moment mild steel sleeve pipe and inner steel pipe friction energy-dissipating under concrete squeezing action; Concrete squeezing action has not only improved its friction energy-dissipating ability, and mild steel sleeve pipe and inner steel pipe are connected as a single entity, and its integral working is good, and rigidity is big, and intensity is also big; When under the rarely occurred earthquake effect, because the distortion of steel tube concrete superposed column increases, mild steel sleeve pipe and the contact of inner steel pipe weaken; Its co-operation performance degradation, they begin to give full play to separately its ductile performance and power consumption effect, and global stiffness reduces; Structural cycle is elongated; Geological process reduces, and is equivalent to increase anti-vibration defense lines one, has improved the safety of structure.
Because steel tube concrete superposed column is after concreting; Only as far as mild steel sleeve pipe and inner steel pipe; The rigidity of mild steel sleeve pipe and inner steel pipe connecting portion with respect to steel duct concrete rigidity a little less than, formed an iron hand in a velvet glove structure, and the mild steel jacket exterior is equally by steel concrete parcel wise man; This structure helps the energy dissipation capacity under geological process, can give full play to the energy dissipation capacity of outside mild steel sleeve pipe and steel tube concrete superposed column; Compare with the common steel tube concrete column under identical section, the identical load action, the steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete has improved the shear resistance of member, realizes strong shear capacity and weak bending capacity easily; Have good ductile performance, under dynamic load especially seismic loading, can pass through the self-deformation dissipation energy, block or delay structural damage.
Beneficial effect
Compare with the common steel tube concrete superposed column, the present invention has the following advantages:
The present invention is steel pipe and concrete combination, be inner concrete filled steel tube and outer steel reinforced concrete combination, be the combination of bottom mild steel sleeve pipe and inner steel pipe, be a kind of steel tube concrete superposed column of Multiple Combination constraint; Bottom of the present invention mild steel sleeve pipe helps improving level and vertical bearing capacity, ductility and the energy dissipation capacity of superposed column; Because the destruction of superposed column generally occurs in the root of post,, increase usable floor area so can effectively reduce its section area to the reinforcement of root; Concrete amount then reduces thereupon, and dead load alleviates, and builds energy consumption and reduces; Under the condition of identical steel using amount, can bring bigger economic benefit.
Description of drawings
Fig. 1 is the floor map of the inside steel pipe of the circular cross-section steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete when being rectangle;
Fig. 2 is the floor map of inside steel pipe when circular of the circular cross-section steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete;
Fig. 3 is the floor map of inside steel pipe when circular of the square-section steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete;
Fig. 4 is the floor map of the inside steel pipe of the square-section steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete when being rectangle;
Fig. 5 is the A-A sectional drawing among Fig. 1, Fig. 2, Fig. 3 and Fig. 4;
Wherein: the inner steel pipe of 1-, 2-steel duct concrete, 3-mild steel sleeve pipe, the outside concrete of 4-steel pipe, 5-indulges muscle, 6-stirrup, 7-bolt, 8-connecting lacing wire, 9-ground or basic end face.
The specific embodiment
The steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete and a kind of form of structure of the practice are as shown in Figure 1; Its sectional drawing is as shown in Figure 5, comprises inner steel pipe 1, steel duct concrete 2, the outside concrete 4 of steel pipe, vertical muscle 5, stirrup 6 and mild steel sleeve pipe 3; Inner steel pipe 1 inside is perfused with steel duct concrete 2, and inner steel pipe 1 outside is perfused with the outside concrete 4 of steel pipe, is embedded with vertical muscle 5 and stirrup 6 in the outside concrete 4 of steel pipe; The tube wall outside, bottom of inner steel pipe 1 is enclosed with mild steel sleeve pipe 3, mild steel sleeve pipe 3 put in the bottom ground or basic end face 9 and with its anchoring.Steel tube concrete superposed column is a circular cross-section.Inner steel pipe 1 is a rectangular steel pipe.The height of mild steel sleeve pipe 3 end faces 9 above ground level or basic is 1.0h, and wherein, h is the long limit size of inner steel pipe 1 square-section.Inner steel pipe 1 corresponding position is reserved with the air vent of some.It is closely knit that concrete can be built, and the inside and outside concrete of steel pipe is connected as one.Mild steel sleeve pipe 3 is connected fixing with inner steel pipe 1 through bolt 7.The thickness of mild steel sleeve pipe 3 is not less than the thickness of inner steel pipe 1.
The practice of the steel tube concrete superposed column of above-mentioned bottom band mild steel sleeve pipe external wrapping concrete is:
1) makes inner steel pipe 1 and the mild steel sleeve pipe 3 bottom it as requested, in inner steel pipe 1 full height scope, reserve the air vent of some, so that steel duct concrete 2 can be connected as a single entity through this air vent with the outside concrete 4 of steel pipe;
2) the two-way reservation bolt hole according to actual needs in the mild steel sleeve pipe 3 corresponding positions of inner steel pipe 1 and bottom;
3) lateral surface at the bolt hole place that inner steel pipe 1 is reserved welds the corresponding nut (not shown);
4) mild steel sleeve pipe 3 is enclosed within the tube wall outside, inner steel pipe 1 bottom, and the mild steel sleeve pipe 3 of inner steel pipe 1 and bottom is carried out correct positioning, penetrate bolt 7, and pass through the nut screwing clamping bolt 7 of inner steel pipe 1 lateral surface;
5) the vertical muscle 5 and stirrup 6 in the colligation outside form steel mesh reinforcement;
6) reserve the certain protection layer thickness in the steel mesh reinforcement outside, a template;
7) concrete perfusion in template is the steel tube concrete superposed column that mild steel sleeve pipe external wrapping concrete is with in the bottom after the moulding.
The steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete and the another kind of form of structure of the practice are as shown in Figure 2, and its sectional drawing is as shown in Figure 5.The superposed column outer shape is circular, and its inner steel pipe 1 also is circular, and other form of structure is identical with embodiment 1.
The steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete and the another kind of form of structure of the practice are as shown in Figure 3, and its sectional drawing is as shown in Figure 5.The superposed column outer shape is a rectangle, and its inner steel pipe 1 is circular, and other form of structure is identical with embodiment 1.
The steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete and the another kind of form of structure of the practice are as shown in Figure 4, and its sectional drawing is as shown in Figure 5.The superposed column outer shape is a rectangle, and its inner steel pipe also is a rectangle, and other form of structure is identical with embodiment 1.
More than be exemplary embodiments of the present invention, enforcement of the present invention is not limited thereto.
Claims (8)
1. the steel tube concrete superposed column of bottom band mild steel sleeve pipe external wrapping concrete is characterized in that: said superposed column comprises inner steel pipe (1), steel duct concrete (2), the outside concrete (4) of steel pipe, vertical muscle (5), stirrup (6) and mild steel sleeve pipe (3); Inner steel pipe (1) inside is perfused with steel duct concrete (2), and inner steel pipe (1) outside is perfused with the outside concrete (4) of steel pipe, is embedded with vertical muscle (5) and stirrup (6) in the outside concrete of steel pipe (4); The tube wall outside, bottom of inner steel pipe (1) is enclosed with mild steel sleeve pipe (3), mild steel sleeve pipe (3) put in the bottom ground or basic end face (9) and with its anchoring.
2. the steel tube concrete superposed column of bottom as claimed in claim 1 band mild steel sleeve pipe external wrapping concrete, it is characterized in that: said steel tube concrete superposed column is rectangle or circular cross-section.
3. the steel tube concrete superposed column of bottom as claimed in claim 1 band mild steel sleeve pipe external wrapping concrete, it is characterized in that: said inner steel pipe (1) is rectangular steel pipe or round steel pipe.
4. the steel tube concrete superposed column of bottom as claimed in claim 3 band mild steel sleeve pipe external wrapping concrete; It is characterized in that: the height of said mild steel sleeve pipe (3) end face above ground level or basic (9) is 1.0h; Wherein, h is the diameter of inner steel pipe (1) circular cross-section or the long limit size of square-section.
5. the steel tube concrete superposed column of bottom as claimed in claim 1 band mild steel sleeve pipe external wrapping concrete is characterized in that: the corresponding position of said inner steel pipe (1) is reserved with the air vent of some.
6. the steel tube concrete superposed column of bottom as claimed in claim 1 band mild steel sleeve pipe external wrapping concrete is characterized in that: said mild steel sleeve pipe (3) is connected fixing with inner steel pipe (1) through bolt (7).
7. the steel tube concrete superposed column of bottom as claimed in claim 1 band mild steel sleeve pipe external wrapping concrete, it is characterized in that: the thickness of said mild steel sleeve pipe (3) is not less than the thickness of inner steel pipe (1).
8. like the practice of the steel tube concrete superposed column of the described bottom of one of claim 1-7 band mild steel sleeve pipe external wrapping concrete, it is characterized in that: production order is following:
1) makes inner steel pipe (1) and the mild steel sleeve pipe (3) bottom it as requested, in inner steel pipe (1) full height scope, reserve the air vent of some, so that the outside concrete of steel duct concrete (2) and steel pipe (4) can be connected as a single entity through this air vent;
2) the two-way reservation bolt hole according to actual needs in the corresponding position of mild steel sleeve pipe (3) of inner steel pipe (1) and bottom;
3) lateral surface at the bolt hole place that inner steel pipe (1) is reserved welds corresponding nut;
4) mild steel sleeve pipe (3) is enclosed within the tube wall outside, inner steel pipe (1) bottom, and the mild steel sleeve pipe (3) of inner steel pipe (1) and bottom is carried out correct positioning, penetrate bolt (7), and pass through the nut screwing clamping bolt (7) of inner steel pipe (1) lateral surface;
5) the vertical muscle (5) and the stirrup (6) in the colligation outside form steel mesh reinforcement;
6) reserve the certain protection layer thickness in the steel mesh reinforcement outside, a template;
7) concrete perfusion in template is the steel tube concrete superposed column that mild steel sleeve pipe external wrapping concrete is with in the bottom after the moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103854768A CN102409808B (en) | 2011-11-28 | 2011-11-28 | Steel tube concrete superposed column with mild steel casing outer packed concrete at bottom and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103854768A CN102409808B (en) | 2011-11-28 | 2011-11-28 | Steel tube concrete superposed column with mild steel casing outer packed concrete at bottom and preparation method thereof |
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| CN102409808A true CN102409808A (en) | 2012-04-11 |
| CN102409808B CN102409808B (en) | 2013-11-27 |
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Cited By (8)
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| CN103422620A (en) * | 2013-08-27 | 2013-12-04 | 陕西建科兴业钢结构有限公司 | Prefabricated hollow steel-reinforced concrete column and splicing structure and splicing method thereof |
| CN103603464A (en) * | 2013-10-21 | 2014-02-26 | 清华大学 | Energy-dissipating anticollision station building column |
| CN106121132A (en) * | 2016-07-05 | 2016-11-16 | 风范绿色建筑（常熟）有限公司 | Lower shrinkage anti-crack concrete outside steel pipe concrete combination column and preparation method thereof |
| CN106193454A (en) * | 2016-07-29 | 2016-12-07 | 华南理工大学 | A kind of permanent template of post ultra-high performance concrete and preparation method thereof |
| CN106812229A (en) * | 2017-03-22 | 2017-06-09 | 华侨大学 | Combination constraint double steel plate concrete shear force wall and its construction method |
| CN108301561A (en) * | 2018-01-02 | 2018-07-20 | 重庆大学 | A kind of connection structure of assembly concrete-filled steel tube shaft |
| CN108385900A (en) * | 2018-05-10 | 2018-08-10 | 北京工业大学 | Damage controllable steel tube concrete superposed column and preparation method thereof |
| CN108590035A (en) * | 2018-04-28 | 2018-09-28 | 北京工业大学 | High-strength recycled concrete superposed column and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106193454A (en) * | 2016-07-29 | 2016-12-07 | 华南理工大学 | A kind of permanent template of post ultra-high performance concrete and preparation method thereof |
| CN106812229A (en) * | 2017-03-22 | 2017-06-09 | 华侨大学 | Combination constraint double steel plate concrete shear force wall and its construction method |
| CN106812229B (en) * | 2017-03-22 | 2022-05-03 | 华侨大学 | Combined constraint double-steel-plate concrete shear wall and construction method thereof |
| CN108301561A (en) * | 2018-01-02 | 2018-07-20 | 重庆大学 | A kind of connection structure of assembly concrete-filled steel tube shaft |
| CN108590035A (en) * | 2018-04-28 | 2018-09-28 | 北京工业大学 | High-strength recycled concrete superposed column and preparation method thereof |
| CN108385900A (en) * | 2018-05-10 | 2018-08-10 | 北京工业大学 | Damage controllable steel tube concrete superposed column and preparation method thereof |
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Granted publication date: 20131127 Termination date: 20171128 |