CN101818543A - Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete - Google Patents

Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete Download PDF

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Publication number
CN101818543A
CN101818543A CN 201010185937 CN201010185937A CN101818543A CN 101818543 A CN101818543 A CN 101818543A CN 201010185937 CN201010185937 CN 201010185937 CN 201010185937 A CN201010185937 A CN 201010185937A CN 101818543 A CN101818543 A CN 101818543A
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China
Prior art keywords
square steel
strength concrete
stirrup
steel pipe
tubular column
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Pending
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CN 201010185937
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Chinese (zh)
Inventor
丁兴发
周林超
余志武
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Central South University
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Central South University
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Priority to CN 201010185937 priority Critical patent/CN101818543A/en
Publication of CN101818543A publication Critical patent/CN101818543A/en
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Abstract

The invention relates to a square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, which comprises a square steel tube, a stirrup, vertical ribs and high-strength concrete, wherein at least three vertical ribs are arranged in the square steel tube along the axial direction of the square steel tube; the stirrup is a single ring or spirochete, and is arranged along the axial direction of the vertical ribs; the stirrup is tangent to the inner surface of the square steel tube and is fixedly connected with the vertical ribs; and the high-strength concrete is cast in the square steel tube. The invention has the advantages of high bearing force, good stretchability, convenient construction, low cost, high bending resistant bearing force and bending resistant rigidity, and can replace the traditional square steel tubular columns with high-strength concrete, structural steel high-strength concrete columns and round steel tubular columns with high-strength concrete, shorten construction period and improve safety performance of buildings.

Description

Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete
Technical field
The present invention relates to a kind of high-strength concrete column, be meant a kind of square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete especially; Belong to the building structural element technical field.
Background technology
High-strength concrete has advantages such as intensity height, the little and good endurance of distortion, can adapt to the modern project structure to stride greatly, heavy duty, towering development and bear the needs of severe environmental conditions, concrete high the reinforcement is the important trend of modern concrete structural development.In high-level structure, adopt the high-strength concrete frame column, can effectively reduce the pillar cross section, increase the usable floor area in house.
Superior performance makes the range of application of high-strength concrete constantly enlarge: abroad, strength grade of concrete has been applied to C100, is up to C130.But high-strength concrete also has its fatal weakness, and promptly the ductility of high-strength concrete is very poor, is easy to generate brittle fracture, and the ductility of plain concrete significantly reduces with the raising of concrete strength.The structure of external a large amount of employing high-strength concretes all is non-seismic region, and the area of China 80% belongs to the district that provides fortification against earthquakes (more than 6 degree), particularly the concentrated city overwhelming majority of highrise building is in the district that provides fortification against earthquakes, and part is in high earthquake intensity area, should not adopt High Strength Concrete Structures." the Code for design of concrete structures GB50010-2002 " of China regulation: when fortification intensity is 9 when spending, strength grade of concrete should not surpass C60, and when fortification intensity is 8 when spending, strength grade of concrete is directly above C70.These prescribed limits the application of high-strength concrete in the highrise building of earthquake zone, therefore research prevents the method for high-strength concrete brittle fracture, makes full use of the advantage of high-strength concrete, has important significance for theories and practical value.
In high-strength concrete column, adds shaped steel, form the shaped steel high-strength concrete column and will obviously improve the ductile performance of high-strength concrete column, but the shaped steel high-strength concrete column that adopts usually in the present engineering there is following deficiency:
1. bearing capacity is not improved.Because shaped steel is positioned at the center of profile steel concrete column, so shaped steel can not produce effectively constraint to concrete; And profile steel concrete column can not be provided with compound stirrup, so the constraint that the high-strength concrete in the shaped steel high-strength concrete column is subjected to is very little, and bearing capacity is the simple superposition of shaped steel, vertical muscle and concrete longitudinal stress.
2. steel reinforced concrete relates to shaped steel, vertical muscle, stirrup and concrete, and working procedure is more.
High-strength concrete is carried out external constraint, form round steel pipe high-strength concrete column or square steel pipe steel high strength concrete pole and also will obviously improve the ductile performance of high-strength concrete, but the round steel pipe high-strength concrete column or the square steel pipe steel high strength concrete pole that adopt usually in the present engineering there are following shortcoming and defect:
1. though the steel pipe in the round steel pipe high-strength concrete is good to the high-strength concrete binding effect, but the round steel pipe high-strength concrete is because the characteristics of circular cross-section, its bending rigidity and anti-bending bearing capacity are lower, and round steel pipe high-strength concrete node construction complexity has limited its application simultaneously.
2. square steel pipe high-strength concrete site operation is convenient, but the steel pipe before ultimate bearing capacity of the steel pipe in the square steel pipe high-strength concrete is poor to the high-strength concrete binding effect, promptly work independently basically, its ultimate bearing capacity is essentially the simple superposition of square steel pipe and high-strength concrete bearing capacity, behind ultimate bearing capacity, steel pipe is better to the high-strength concrete binding effect, has improved concrete ductility.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art and a kind of bearing capacity height is provided, ductility is good, easy construction, and cost is low, the square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete that anti-bending bearing capacity and bending rigidity are big.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention comprises square steel pipe, stirrup, vertical muscle, high-strength concrete, and described vertical muscle is at least three and be axially disposed within the described square steel pipe along described square steel pipe; Described stirrup is single annulus or conveyor screw, and described stirrup is along the axial setting of described vertical muscle, and described stirrup is tangent with described square steel pipe inner surface and fixedly connected with described vertical muscle; Built high-strength concrete in the described square steel pipe.
Among the present invention, described stirrup and described vertical muscle adopt spot welding or colligation to fix.
Among the present invention, be 30~80mm along the spacing between the axial adjacent two annulus stirrups that are provided with of described vertical muscle; The spirochetal pitch of described stirrup is 30~80mm.
Among the present invention, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between (1: 3)~(3: 1).
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, its square steel pipe mainly bears moment of flexure, secondly is a power, steel duct ring-shaped stirrup restraint and high-strength concrete is mainly born a power, and ring-shaped stirrup only provides horizontal effect of contraction to core concrete.
The effect that square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention brought is:
1. bearing capacity height, ductility are good.The concrete of square steel pipe across corner plays effect of contraction, and internally tangent ring-shaped stirrup plays effect of contraction to the concrete at middle part, and square steel pipe also can be born outer moment of flexure in carrying mechanical axis power, and square steel pipe and interior confined concrete are divided the work clearly.
2. easy construction.Square steel pipe can weld at the construction field (site), and annular stirrup or spiral stirrup can be taked to fix with the mode of inner 4 vertical muscle spot welding or colligation, and the construction of post itself and node is relative simple.
3. good economical benefit.Under the same cross-sectional steel ratio, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete bearing capacity, ductile performance and round steel pipe high-strength concrete column are more approaching, and easy construction, but therefore economical with materials, improve speed of application.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete is compared with round steel pipe high-strength concrete column, square steel pipe high-strength concrete column and shaped steel high-strength concrete column, has the following advantages:
1. compare with the shaped steel high-strength concrete column with the square steel pipe high-strength concrete column, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete has improved the bearing capacity and the ductility of high-strength concrete column, the concrete of square steel pipe across corner plays effect of contraction, and the inscribed circle stirrup plays effect of contraction to the concrete at middle part.
2. compare with the round steel pipe high-strength concrete column, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete bearing capacity and ductility are suitable substantially, and anti-bending bearing capacity and bending rigidity are big.
3. compare with the shaped steel high-strength concrete column, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete has solved stirrup and great in constructing amount, the concrete shake that cause too much are set have smash problems such as difficulty and template consumption are big.
4. compare with the round steel pipe high-strength concrete column, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete has solved the complicated difficulty of round steel pipe high strength concrete column reinforcing joint construction.
In sum, bearing capacity height of the present invention, ductility is good, easy construction, cost is low, and anti-bending bearing capacity and bending rigidity are big, alternative existing square steel pipe high-strength concrete column, shaped steel high-strength concrete column, round steel pipe high-strength concrete column shorten construction period, improve the security performance of building.
Description of drawings
Fig. 1 is a structural profile schematic diagram of the present invention.
Fig. 2 is a structural plan of the present invention schematic diagram.
Fig. 3 is the structural representation of the skeleton of the specific embodiment one.
Fig. 4 is the structural representation of the skeleton of the specific embodiment two.
Among Fig. 1,2,3,4,1--indulges muscle, 2--stirrup, 3-high-strength concrete, 4--square steel pipe.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
Referring to accompanying drawing 1,2,3, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention comprises square steel pipe 4, stirrup 2, vertical muscle 1, high-strength concrete 3, and described vertical muscle 1 is at least three and be axially disposed within the described square steel pipe 4 along described square steel pipe 4; Described stirrup 2 is single annulus, and described stirrup 2 is along the axial setting of described vertical muscle 1, and the spacing between the adjacent two annulus stirrups is 30~80mm, and described stirrup 2 is tangent and adopt spot welding or colligation to fix with described vertical muscle 1 with described square steel pipe 4 inner surfaces; Built high-strength concrete 3 in the described square steel pipe, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between (1: 3)~(3: 1).
Embodiment 2
Referring to accompanying drawing 1,2,4, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention comprises square steel pipe 4, stirrup 2, vertical muscle 1, high-strength concrete 3, and described vertical muscle 1 is at least three and be axially disposed within the described square steel pipe 4 along described square steel pipe 4; Described stirrup 2 is a conveyor screw, and described stirrup 2 is along the axial setting of described vertical muscle 1, and described spirochetal pitch is 30~80mm, and described stirrup 2 is tangent and adopt spot welding or colligation to fix with described vertical muscle 1 with described square steel pipe 4 inner surfaces; Built high-strength concrete 3 in the described square steel pipe, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between (1: 3)~(3: 1).

Claims (4)

1. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete comprises square steel pipe, stirrup, vertical muscle, high-strength concrete, it is characterized in that: described vertical muscle is at least three and be axially disposed within the described square steel pipe along described square steel pipe; Described stirrup is single annulus or conveyor screw, and described stirrup is along the axial setting of described vertical muscle, and described stirrup is tangent with described square steel pipe inner surface and fixedly connected with described vertical muscle; Built high-strength concrete in the described square steel pipe.
2. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 1 is characterized in that: described stirrup and described vertical muscle adopt spot welding or colligation to fix.
3. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 2 is characterized in that: along the spacing between the axial adjacent two annulus stirrups that are provided with of described vertical muscle is 30~80mm; The spirochetal pitch of described stirrup is 30~80mm.
4. according to any described square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of claim 1-3, it is characterized in that: the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between (1: 3)~(3: 1).
CN 201010185937 2010-05-28 2010-05-28 Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete Pending CN101818543A (en)

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CN 201010185937 CN101818543A (en) 2010-05-28 2010-05-28 Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete

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Application Number Priority Date Filing Date Title
CN 201010185937 CN101818543A (en) 2010-05-28 2010-05-28 Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003042A (en) * 2010-10-26 2011-04-06 天津大学 Spiral-stirrup square steel tube concrete column and manufacturing method thereof
CN102619303A (en) * 2012-04-14 2012-08-01 中南大学 Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement
CN103615072A (en) * 2013-11-25 2014-03-05 广西大学 Steel-encased concrete steel column with built-in spiral stirrup
CN103615071A (en) * 2013-11-25 2014-03-05 广西大学 Concrete-filled square steel tubular column with built-in spiral stirrup
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
WO2016041236A1 (en) * 2014-09-17 2016-03-24 华南理工大学 High-strength regenerative mixed steel pipe concrete axial-compression column with internal local restraint, and construction process
WO2016041237A1 (en) * 2014-09-17 2016-03-24 华南理工大学 High-strength regenerative mixed steel pipe concrete anti-shock column with internal local restraint, and construction process
CN109252621A (en) * 2018-11-22 2019-01-22 福泉市发隆钢构有限公司 A kind of high load bearing stength steel core concrete column

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JPH0941489A (en) * 1995-07-28 1997-02-10 Sumitomo Metal Ind Ltd Concrete filled steel pipe column and manufacture thereof
JP2000282563A (en) * 2000-01-01 2000-10-10 Daiwa House Ind Co Ltd Steel encased reinforced concrete structure with thickened steel-pipe used and its execution method
JP2002242366A (en) * 2001-02-22 2002-08-28 Kajima Corp Concrete-filled steel tube column, the column, and column connecting structure
CN2837420Y (en) * 2003-10-29 2006-11-15 润弘精密工程事业股份有限公司 Cylinder spiral reinforcement cage of square column
CN1987012A (en) * 2006-12-22 2007-06-27 哈尔滨工业大学 Steel tube binding type steel high strength concrete pole
CN1987013A (en) * 2006-12-22 2007-06-27 哈尔滨工业大学 Steel tube binding steel rib high strength concrete pole
CN101328751A (en) * 2008-05-23 2008-12-24 合肥工业大学 Fiber composite material steel reinforced concrete structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2042688U (en) * 1988-04-21 1989-08-16 王能东 Spraying tooth brush
JPH0941489A (en) * 1995-07-28 1997-02-10 Sumitomo Metal Ind Ltd Concrete filled steel pipe column and manufacture thereof
JP2000282563A (en) * 2000-01-01 2000-10-10 Daiwa House Ind Co Ltd Steel encased reinforced concrete structure with thickened steel-pipe used and its execution method
JP2002242366A (en) * 2001-02-22 2002-08-28 Kajima Corp Concrete-filled steel tube column, the column, and column connecting structure
CN2837420Y (en) * 2003-10-29 2006-11-15 润弘精密工程事业股份有限公司 Cylinder spiral reinforcement cage of square column
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003042A (en) * 2010-10-26 2011-04-06 天津大学 Spiral-stirrup square steel tube concrete column and manufacturing method thereof
CN102619303A (en) * 2012-04-14 2012-08-01 中南大学 Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement
CN102619303B (en) * 2012-04-14 2015-01-14 中南大学 Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement
CN103615072A (en) * 2013-11-25 2014-03-05 广西大学 Steel-encased concrete steel column with built-in spiral stirrup
CN103615071A (en) * 2013-11-25 2014-03-05 广西大学 Concrete-filled square steel tubular column with built-in spiral stirrup
WO2016041236A1 (en) * 2014-09-17 2016-03-24 华南理工大学 High-strength regenerative mixed steel pipe concrete axial-compression column with internal local restraint, and construction process
WO2016041237A1 (en) * 2014-09-17 2016-03-24 华南理工大学 High-strength regenerative mixed steel pipe concrete anti-shock column with internal local restraint, and construction process
US10087629B2 (en) * 2014-09-17 2018-10-02 South China University Of Technology Seismic steel tubular column with internal local restraint and filled with high-strength compound concrete containing normal-strength demolished concrete lumps and construction process of such column
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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
CN109252621A (en) * 2018-11-22 2019-01-22 福泉市发隆钢构有限公司 A kind of high load bearing stength steel core concrete column

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Open date: 20100901