CN103615071A - Concrete-filled square steel tubular column with built-in spiral stirrup - Google Patents
Concrete-filled square steel tubular column with built-in spiral stirrup Download PDFInfo
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- CN103615071A CN103615071A CN201310605884.9A CN201310605884A CN103615071A CN 103615071 A CN103615071 A CN 103615071A CN 201310605884 A CN201310605884 A CN 201310605884A CN 103615071 A CN103615071 A CN 103615071A
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Abstract
The invention belongs to a building structure member in the technical field of building engineering, and particularly relates to a concrete-filled square steel tubular column with a built-in spiral stirrup. The concrete-filled square steel tubular column comprises a square steel tube, the spiral stirrup, a longitudinal reinforcement and core concrete, wherein the longitudinal reinforcement is arranged on the inner wall of the spiral stirrup to form a spiral reinforcement cage which is arranged in the center of the square steel tube, the core concrete is filled in the internal space of the square steel tube to form the concrete-filled steel tubular column with the built-in spiral stirrup. The concrete-filled steel tubular column with the built-in spiral stirrup has the advantages of being high in bearing capacity, good in ductility, excellent in anti-seismic property, simple in structure, simple and convenient to construct, and good in economy.
Description
Technical field
The invention belongs to the building structural element of construction engineering technical field, be specifically related to a kind of built-in spiral-stirrup square steel tube concrete column.
Background technology
Encased structures is a kind of form in steel-concrete combined structure, concrete is inserted in steel pipe and made, can effectively bring into play steel and concrete bi-material advantage separately, overcome the shortcoming that cripling easily occurs steel tubular structure simultaneously, had that bearing capacity is high, anti-seismic performance good, an advantage such as remarkable in economical benefits and quick construction.Steel core concrete column is in loading process, steel pipe walls forms rigid constraint effect to core concrete, steel pipe and concrete are all in three-dimensional stress state, and concrete crushing strength and plastic property are all greatly improved, and have prevented the concrete brittle fracture of steel pipe inner core.In recent years, along with going deep into and the newly generation of construction technology of theoretical research, encased structures demonstrates its vast potential for future development as novel building combining structure.
In Practical Project, encased structures can be divided into Concrete Filled Square Steel Tubular, concrete filled steel tube structure and polygonal steel pipe concrete structure etc. according to the difference of section form, and wherein concrete-filled steel square tubular column and concrete-filled circular steel tube column application are comparatively extensive.Each is more even to effect of contraction to core concrete for concrete-filled circular steel tube column, and binding effect is better than concrete-filled steel square tubular column, but concrete-filled circular steel tube column existent defect on Joint's connection fabrication, and must be by means of the bracket on post and stiffener while being connected with beam.Concrete-filled steel square tubular column compare with concrete-filled circular steel tube column have that cross section bending rigidity is large, joint structure is simple, be easy to the features such as finishing, is subject to people and likes, its engineering is applied also increasing.But because square steel pipe cross section is comprised of four straight flanges, same section steel pipe is inhomogeneous to the effect of contraction of core concrete, effect of contraction mainly concentrates on four bights, the constraint of straight flange middle part is very weak, and therefore, the concrete filled steel tube of the bearing capacity of Concrete-Filled Square Steel Tube, the equal sectional dimension of ductility ratio is low, and easily there is cripling in tube wall, under the flakiness ratio of restriction square steel pipe, make the thicker steel using amount that increased of steel pipe walls, increased welding difficulty.At present, mainly by the method for reinforcing bar stiffening rib or steel plate stiffening rib or employing binding bar is set, prevent steel plate generation cripling and improve the effect of contraction of steel pipe to core concrete, but the method adopting exists, steel using amount is large, construction is complicated, high cost shortcoming, does not meet the requirement of engineering reality.Therefore, be necessary to propose a kind of rational concrete-filled steel square tubular column, make square steel concrete column not only possess the feature that concrete-filled circular steel tube column restraint performance is good, and can give full play to the easy advantage of concrete-filled steel square tubular column connection structure, can guarantee the economical rationality of structure again simultaneously.
Summary of the invention
The object of this invention is to provide that a kind of bearing capacity is high, good working ductility, anti-seismic performance be superior, the built-in spiral-stirrup square steel tube concrete column of simple structure, easy construction, good economy performance.
The present invention solves the problems of the technologies described above with following technical scheme:
Built-in spiral-stirrup square steel tube concrete column, comprise square steel pipe, spiral stirrup, longitudinal reinforcement and core concrete, at spiral stirrup inwall, longitudinal reinforcement is set and forms spiral reinforcement cage, spiral reinforcement cage is placed in to square steel pipe center, the central axis of spiral reinforcement cage overlaps with square steel pipe central axis, core concrete is filled up to square steel pipe inner space, form built-in spiral-stirrup square steel tube concrete column.
Described longitudinal reinforcement colligation or be welded on spiral stirrup inwall, the quantity of longitudinal reinforcement is no less than 4.
Described square steel pipe inner wall surface is 30-50mm to the minimum range of spiral stirrup external surface.
Described spiral stirrup adopts HPB300 or the HRB335 reinforcing bar cold bending that diameter is 6～12mm to process, and longitudinal reinforcement adopts HRB335 or the HRB400 reinforcing bar that diameter is 10～16mm.
Described square steel pipe adopts Q235 steel, Q345 steel, Q390 steel or Q420 steel to make.
Described core concrete adopts ordinary concrete or high performance concrete.
Built-in spiral-stirrup square steel tube concrete column provided by the invention has following remarkable advantage:
The advantage such as 1, built-in spiral-stirrup square steel tube concrete column has that bearing capacity is high, good working ductility, saving template, speed of application are fast.
2, built-in spiral stirrup is to the constraint to spiral stirrup to the concrete between the constraint of core concrete, square steel pipe and spiral stirrup of the constraint of core concrete, square steel pipe, three's synergy, strengthen ductility and the bearing capacity of concrete-filled steel square tubular column, and effectively improved its anti-seismic performance.
3, significantly improved the ordinary square concrete-filled steel steel pipe feature poor and inhomogeneous to core concrete binding effect, effectively prevent square steel pipe straight flange steel plate generation cripling, give full play to the effect of steel pipe and core concrete bi-material, improved steel core concrete column strength and ductility.
4, compare with concrete-filled circular steel tube column have node be connected simply, resist crooked deformability strong, be easy to the features such as finishing, possessed the good feature of concrete-filled circular steel tube column restraint performance simultaneously, can give full play to concrete-filled steel square tubular column and connect easy advantage.
5, overcome thicken that steel plate or band steel plate stiffening rib or reinforcing bar stiffening rib or binding bar concrete-filled steel square tubular column steel using amount are large, complex structure, high cost shortcoming.
Accompanying drawing explanation
Fig. 1 is spiral reinforcement basket structure schematic diagram.
Fig. 2 is built-in spiral-stirrup square steel tube concrete column structural representation.
Fig. 3 is the schematic cross-section of Fig. 2.
In figure: 1-square steel pipe, 2-spiral stirrup, 3-longitudinal reinforcement, 4-core concrete.
The specific embodiment
In order more to clearly demonstrate technical scheme of the present invention, below in conjunction with Fig. 1, Fig. 2, Fig. 3, the present invention is described in detail.
The specific embodiment: the built-in spiral-stirrup square steel tube concrete column of present embodiment is comprised of square steel pipe 1, spiral stirrup 2, longitudinal reinforcement 3 and core concrete 4, at spiral stirrup 2 inwalls, longitudinal reinforcement 3 is set and forms spiral reinforcement cage, spiral reinforcement cage is placed in to square steel pipe 1 center, the central axis of spiral reinforcement cage overlaps with square steel pipe 1 central axis, core concrete 4 is filled up to square steel pipe 1 inner space, form built-in spiral-stirrup square steel tube concrete column.
Built-in spiral-stirrup square steel tube concrete column, built-in spiral stirrup is to the constraint to spiral stirrup to the concrete between the constraint of core concrete, square steel pipe and spiral stirrup of the constraint of core concrete, square steel pipe, three's synergy, can effectively suppress steel plate generation cripling, improve bearing capacity and the ductility of concrete-filled steel square tubular column, given full play to the performance of material, made that built-in spiral-stirrup square steel tube concrete column has that bearing capacity is high, good working ductility, anti-seismic performance are superior, the feature of easy construction, good economy performance.
Claims (6)
1. built-in spiral-stirrup square steel tube concrete column, comprise square steel pipe, spiral stirrup, longitudinal reinforcement and core concrete, it is characterized in that: at spiral stirrup inwall, longitudinal reinforcement is set and forms spiral reinforcement cage, spiral reinforcement cage is placed in square steel pipe center, and core concrete fills up square steel pipe inner space.
2. built-in spiral-stirrup square steel tube concrete column according to claim 1, is characterized in that: described longitudinal reinforcement colligation or be welded on spiral stirrup inwall, the quantity of longitudinal reinforcement is no less than 4.
3. built-in spiral-stirrup square steel tube concrete column according to claim 1, is characterized in that: described square steel pipe inner wall surface is 30-50mm to the minimum range of spiral stirrup external surface.
4. built-in spiral-stirrup square steel tube concrete column according to claim 1, it is characterized in that: described spiral stirrup adopts HPB300 or the HRB335 reinforcing bar cold bending that diameter is 6～12mm to process, and longitudinal reinforcement adopts HRB335 or the HRB400 reinforcing bar that diameter is 10～16mm.
5. built-in spiral-stirrup square steel tube concrete column according to claim 1, is characterized in that: described square steel pipe adopts Q235 steel, Q345 steel, Q390 steel or Q420 steel to make.
6. built-in spiral-stirrup square steel tube concrete column according to claim 1, is characterized in that: described core concrete adopts ordinary concrete or high performance concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310605884.9A CN103615071A (en) | 2013-11-25 | 2013-11-25 | Concrete-filled square steel tubular column with built-in spiral stirrup |
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| CN201310605884.9A CN103615071A (en) | 2013-11-25 | 2013-11-25 | Concrete-filled square steel tubular column with built-in spiral stirrup |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967210A (en) * | 2014-04-12 | 2014-08-06 | 北京工业大学 | Square steel pipe waste concrete core spiral hoop stiffening composite column with T-shaped ribbed stiffeners |
| 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 |
| CN104746766A (en) * | 2015-03-25 | 2015-07-01 | 韦翔宇 | Spring damping column |
| CN105133790A (en) * | 2015-08-28 | 2015-12-09 | 风范绿色建筑（常熟）有限公司 | High-strength square steel tube concrete pillar |
| CN105201144A (en) * | 2015-10-19 | 2015-12-30 | 广西大学 | Tree ring type high-strength concrete filled square steel tube column equipped with multiple spiral stirrups |
| CN105672574A (en) * | 2016-03-30 | 2016-06-15 | 广西大学 | Annual ring type reinforced high-strength concrete circular column |
| CN105672573A (en) * | 2016-03-30 | 2016-06-15 | 广西大学 | High-strength concrete column with combined spiral hoops and square steel pipes |
| CN105863164A (en) * | 2016-03-30 | 2016-08-17 | 广西大学 | High-strength concrete square column with bundled spiral stirrups |
| CN114182882A (en) * | 2021-12-10 | 2022-03-15 | 厦门工学院 | Steel pipe externally-wrapped assembled concrete column, structure and construction method thereof |
| CN115306078A (en) * | 2022-09-19 | 2022-11-08 | 山东建筑大学 | Spiral stirrup reinforced steel pipe concrete structure |
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| JP2010106600A (en) * | 2008-10-31 | 2010-05-13 | Sumitomo Metal Ind Ltd | Column with reinforced concrete-filled steel tube structure |
| CN101818543A (en) * | 2010-05-28 | 2010-09-01 | 中南大学 | Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete |
| CN102003042A (en) * | 2010-10-26 | 2011-04-06 | 天津大学 | Spiral-stirrup square steel tube concrete column and manufacturing method thereof |
| CN102031846A (en) * | 2010-12-28 | 2011-04-27 | 哈尔滨工业大学 | End-opened inclined rib rectangular steel tube confined concrete column |
| CN102677824A (en) * | 2012-05-17 | 2012-09-19 | 天津大学 | Special-shaped composite concrete-filled steel tube column matched with spiral stirrups and making method of special-shaped composite concrete-filled steel tube column |
| CN202969252U (en) * | 2012-12-04 | 2013-06-05 | 长安大学 | Square concrete filled steel tubular column based on carbon fiber ribs |
| CN103132651A (en) * | 2013-01-15 | 2013-06-05 | 盐城工学院 | Textile reinforced concrete (TRC) tube restraining reinforced concrete column |
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2013
- 2013-11-25 CN CN201310605884.9A patent/CN103615071A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010106600A (en) * | 2008-10-31 | 2010-05-13 | Sumitomo Metal Ind Ltd | Column with reinforced concrete-filled steel tube structure |
| CN101818543A (en) * | 2010-05-28 | 2010-09-01 | 中南大学 | Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete |
| CN102003042A (en) * | 2010-10-26 | 2011-04-06 | 天津大学 | Spiral-stirrup square steel tube concrete column and manufacturing method thereof |
| CN102031846A (en) * | 2010-12-28 | 2011-04-27 | 哈尔滨工业大学 | End-opened inclined rib rectangular steel tube confined concrete column |
| CN102677824A (en) * | 2012-05-17 | 2012-09-19 | 天津大学 | Special-shaped composite concrete-filled steel tube column matched with spiral stirrups and making method of special-shaped composite concrete-filled steel tube column |
| CN202969252U (en) * | 2012-12-04 | 2013-06-05 | 长安大学 | Square concrete filled steel tubular column based on carbon fiber ribs |
| CN103132651A (en) * | 2013-01-15 | 2013-06-05 | 盐城工学院 | Textile reinforced concrete (TRC) tube restraining reinforced concrete column |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967210A (en) * | 2014-04-12 | 2014-08-06 | 北京工业大学 | Square steel pipe waste concrete core spiral hoop stiffening composite column with T-shaped ribbed stiffeners |
| 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 |
| CN104746766A (en) * | 2015-03-25 | 2015-07-01 | 韦翔宇 | Spring damping column |
| CN105133790A (en) * | 2015-08-28 | 2015-12-09 | 风范绿色建筑（常熟）有限公司 | High-strength square steel tube concrete pillar |
| CN105201144A (en) * | 2015-10-19 | 2015-12-30 | 广西大学 | Tree ring type high-strength concrete filled square steel tube column equipped with multiple spiral stirrups |
| CN105672574A (en) * | 2016-03-30 | 2016-06-15 | 广西大学 | Annual ring type reinforced high-strength concrete circular column |
| CN105672573A (en) * | 2016-03-30 | 2016-06-15 | 广西大学 | High-strength concrete column with combined spiral hoops and square steel pipes |
| CN105863164A (en) * | 2016-03-30 | 2016-08-17 | 广西大学 | High-strength concrete square column with bundled spiral stirrups |
| CN114182882A (en) * | 2021-12-10 | 2022-03-15 | 厦门工学院 | Steel pipe externally-wrapped assembled concrete column, structure and construction method thereof |
| CN115306078A (en) * | 2022-09-19 | 2022-11-08 | 山东建筑大学 | Spiral stirrup reinforced steel pipe concrete structure |
| CN115306078B (en) * | 2022-09-19 | 2023-11-21 | 山东建筑大学 | Spiral stirrup reinforced steel pipe concrete structure |
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Application publication date: 20140305 |