CN102535747A - Multi-cavity concrete-filled steel tube column with angle bars bonded and welded at corners and reinforcing cages arranged in cavities and construction method of multi-cavity concrete-filled steel tube column - Google Patents

Multi-cavity concrete-filled steel tube column with angle bars bonded and welded at corners and reinforcing cages arranged in cavities and construction method of multi-cavity concrete-filled steel tube column Download PDF

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Publication number
CN102535747A
CN102535747A CN2011104600735A CN201110460073A CN102535747A CN 102535747 A CN102535747 A CN 102535747A CN 2011104600735 A CN2011104600735 A CN 2011104600735A CN 201110460073 A CN201110460073 A CN 201110460073A CN 102535747 A CN102535747 A CN 102535747A
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China
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steel tube
cavity
steel
reinforcing cage
concrete
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CN2011104600735A
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曹万林
王智慧
惠存
董宏英
张建伟
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Beijing University of Technology
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Beijing University of Technology
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Abstract

The invention provides a multi-cavity concrete-filled steel tube column with angle bars bonded and welded at corners and reinforcing cages arranged in cavities. The multi-cavity concrete-filled steel tube column comprises multi-cavity steel pipes (1), concrete (2), the angle bars (3) and the reinforcing cages (4), and is formed by bonding and welding the angle bars (3) at the corners outside a common multi-cavity concrete-filled steel tube column and additionally arranging the reinforcing cages (4) into the cavities of the common multi-cavity concrete-filled steel tube column. The angle bars are formed by rolling section steel; no weld joint is formed at any corner, so that the ductility is high, and the defect of the fragile welding at a corner of the multi-cavity concrete-filled steel tube column is overcome; only the corners are reinforced, so that steel material is saved, and the cost is reduced; and the reinforcing cages restrain the concrete in the cavities, and can restrain the concrete in the cavities together with the multi-cavity steel pipes in a combined manner, so that the pressure-resistant capability and the ductility of the concrete are improved. Therefore, the multi-cavity concrete-filled steel tube column provided by the invention has the advantages that the seismic performance of the structure of the multi-cavity concrete-filled steel tube column is improved; damage on the structure or a component due to the tearing of the weld joint of a steel plate at the bottom of the structure of the multi-cavity concrete-filled steel tube column is delayed or avoided; and the performance of the material is utilized fully.

Description

The bight is pasted in the leg steel chamber reinforcing cage multi-cavity body steel core concrete column and the practice is set
Technical field
The present invention is provided with the reinforcing cage multi-cavity body steel core concrete column and the practice in a kind of bight subsides leg steel chamber, is mainly used in the energy dissipation and damping control field in the building structure.
Background technology
Society is in progress, and people's living standard is also improving constantly, and various forms of buildings emerge in an endless stream, and satisfy the building of different functions of use and also arise at the historic moment.The emerge in multitude of especially high-rise, super highrise building, this just needs the construction that new theory and new technology support this type building.Rectangular steel-tube concrete column and concrete-filled circular steel tube column are because the restriction of himself size and processing technology; Can not infinitely satisfy the needs of engineering; Under this prerequisite, multi-cavity body encased structures also just produces thereupon, and its multi-cavity body steel pipe is to be joined by steel plate to be welded.
Multi-cavity body concrete filled steel tube is made up of multi-cavity body steel pipe and two kinds of materials of concrete, because the effect of cavity inner concrete, the stability of steel pipe wallboard improves a lot, and delays or has avoided the too early generation cripling of steel pipe wallboard; Steel pipe is to the effect of contraction of its core concrete simultaneously; Make concrete be in the stress state of high complexity, thereby concrete intensity is improved, plasticity and toughness properties improve; The combination of two kinds of materials has remedied shortcoming separately, makes its material property obtain giving full play to.
In the huge post pressurized of multi-cavity body concrete filled steel tube performance test, find also to exist the some shortcomings part in the multi-cavity body encased structures function admirable.Encased structures destroys and generally all occurs in its bottom under severe earthquake action, and it is bent that local drum takes place the cavity wallboard easily; Cavity wallboard bearing capacity descends, and causes cavity bight weld seam to be torn, and inner concrete effect of contraction is weakened; The core concrete of the outside convex camber corresponding site of steel plate is serious crisp broken, and this moment, its superstructure possibly also not reach surrender, and the performance of material is not fully exerted; Caused the serious waste of material, a large amount of earthquake phenomenons have also proved this point.
In the huge post pressurized of multi-cavity body concrete filled steel tube performance test, through whether the contrast test of reinforcing cage is set, finding to be provided with in the cavity reinforcing cage has tangible contribution to improving bearing of component and ductility.Reinforcing cage has formed constraint to the cavity inner concrete, and reinforcing cage and multi-cavity body steel pipe have the compound constant effect to the cavity inner concrete, thereby have improved concrete anti-pressure ability and ductility.
Summary of the invention
Technical problem to be solved by this invention is: improve the anti-seismic performance of multi-cavity body encased structures, delay or avoid giving full play to the performance of material because encased structures bottom steel plate welding seams is torn the destruction that causes structure or member.In order to address this problem, to the present invention proposes in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post and the practice are set.
The technical scheme that the present invention adopts is:
The bight is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it comprises multi-cavity steel tube 1, is filled in the interior concrete 2 of multi-cavity steel tube, pastes the angle steel 3 that is welded in bight, the multi-cavity steel tube outside and places the reinforcing cage 4 in the multi-cavity steel tube; The corner that angle steel 3 pastes the bight that is welded in the multi-cavity steel tube concrete post according to actual needs and needs to strengthen; Reinforcing cage 4 is arranged in the cavity of multi-cavity steel tube concrete post according to calculating or structure needs.
Directly paste weldering rolling angle iron 3 for 90 ° of angles,, then curve respective angles and paste weldering with steel plate for non-90 ° of angles; Paste the leg steel should put in the basis and with its anchoring, anchorage length should meet designing requirement.
Said multi-cavity steel tube concrete column section shape can be combined by circle, triangle, rectangle.
Said multi-cavity steel tube concrete column section is shaped as circular and the square-section is combined to form the table tennis bat tee section or is combined to form the fusiformis cross section by rectangle and triangular-section.
Said angle steel 3 welds for pasting with multi-cavity steel tube 1 type of attachment, and the steel of angle steel adopt Q235, and thickness is 1/3~1/2 of multi-cavity steel tube steel plate thickness; Weld seam should meet the respective design requirement.Angle steel is a shaped steel, rolling forming, and the bight does not have weld seam, and ductility is good, can overcome the drawback of multi-cavity steel tube concrete post bight fragility welding, and just optionally strengthen in the bight, can save steel, reduces cost.
Connect angle steel 3 height above ground level or flooring that paste weldering and be preferably 1/3h, h is the height of multi-cavity steel tube concrete post.
Said reinforcing cage 4 is made up of vertical muscle and ring-shaped stirrup, according to calculating or structure requirement setting.
The preparation method that reinforcing cage multi-cavity steel tube concrete post is set in the leg steel chamber is pasted in the bight, and its making step is following:
1), pastes leg steel 3 in bight, multi-cavity steel tube 1 outside;
2) in the cavity of the multi-cavity steel tube 1 of multi-cavity steel tube concrete post, reinforcing cage 4 is set, and positions;
3) concrete perfusion 2, carry out maintenance, be after the shaping in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set.
According to technical scheme of the present invention, the bight is pasted and in the leg steel chamber its preparation method of reinforcing cage multi-cavity steel tube concrete post to be set and to be:
1) as required, pastes leg steel 3 in bight, multi-cavity steel tube 1 outside;
2) reinforcing cage 4 is set in the cavity of multi-cavity steel tube concrete post, and correctly locatees;
3) concrete perfusion 2, carry out maintenance, be after the shaping in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set.
The present invention can obtain following beneficial effect:
Reinforcing cage 4 is set in the cavity of multi-cavity steel tube concrete post, cooperates, concrete 2 is formed the compound constant effect, improve the compression bearing and the ductility of member with multi-cavity steel tube 1.
Leg steel 3 is pasted in bight at the multi-cavity steel tube concrete post as required, and angle steel is a shaped steel, rolling forming; The bight does not have weld seam, and ductility is good, can overcome the drawback of multi-cavity steel tube concrete post bight fragility welding; And just optionally strengthen in the bight, can save steel, practice thrift cost.
Description of drawings
Fig. 1 is provided with reinforcing cage multi-cavity steel tube concrete post (type one) floor map in the bight subsides leg steel chamber;
Fig. 2 is provided with reinforcing cage multi-cavity steel tube concrete post (type two) floor map in the bight subsides leg steel chamber;
Wherein: the 1-multi-cavity steel tube, the 2-concrete, the 3-angle steel, the 4-reinforcing cage,
The specific embodiment
Below in conjunction with instantiation the present invention is further specified:
Embodiment 1
As shown in Figure 1, in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set and comprises multi-cavity steel tube 1, concrete 2, angle steel 3 and reinforcing cage 4.It is at the bight, the outside of common multi-cavity steel tube concrete post subsides leg steel 3 that the reinforcing cage multi-cavity steel tube concrete post and the practice are set in the bight subsides leg steel chamber, adds reinforcing cage 4 in the chamber;
Angle steel 3 height above ground level or flooring that paste weldering are preferably 1/3h (h is the height of multi-cavity steel tube concrete post); Just strengthen the plastic hinge territory of steel core concrete column; Delay or avoid the destruction of concrete filled steel tube column bottom, improve its seismic bearing capacity and energy dissipation capacity;
Paste the size of leg steel 3, should confirm according to actual test specimen.Single limb length of general angle steel be preferably that institute's welding steel tube edge that pastes grows 1/3, the steel plate thickness of angle steel should multi-cavity steel tube steel plate thickness 1/3~1/2, weld seam should meet the respective design requirement.
In the bight subsides leg steel chamber in the present embodiment reinforcing cage multi-cavity steel tube concrete post being set can make as follows:
1), makes welding multi-cavity steel tube 1 according to actual conditions;
2) select the appropriate location to paste leg steel 3 in the multi-cavity steel tube bight, directly paste the weldering rolling angle iron,, then curve respective angles and paste weldering with steel plate for non-90 ° of angles for 90 ° of angles;
3) reinforcing cage 4 is set in cavity, reinforcing cage 4 should be pressed close to the multi-cavity steel tube inwall;
4) concreting 2 in multi-cavity steel tube 1 is after the moulding in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set.
Embodiment 2
As shown in Figure 2, in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set and comprises multi-cavity steel tube 1, concrete 2, angle steel 3 and reinforcing cage 4.It is at the bight, the outside of common multi-cavity steel tube concrete post subsides leg steel 3 that the reinforcing cage multi-cavity steel tube concrete post and the practice are set in the bight subsides leg steel chamber, adds reinforcing cage 4 in the chamber;
Angle steel 3 height above ground level or flooring that paste weldering are preferably 1/3h (h is the height of multi-cavity steel tube concrete post); Just strengthen the plastic hinge territory of steel core concrete column; Delay or avoid the destruction of concrete filled steel tube column bottom, improve its seismic bearing capacity and energy dissipation capacity;
Paste the size of leg steel 3, should confirm according to actual test specimen.Single limb length of general angle steel be preferably that institute's welding steel tube edge that pastes grows 1/3, the steel plate thickness of angle steel should multi-cavity steel tube steel plate thickness 1/3~1/2, weld seam should meet the respective design requirement.
In the bight subsides leg steel chamber in the present embodiment reinforcing cage multi-cavity steel tube concrete post being set can make as follows:
1), makes welding multi-cavity steel tube 1 according to actual conditions;
2) select the appropriate location to paste leg steel 3 in the multi-cavity steel tube bight, directly paste the weldering rolling angle iron,, then curve respective angles and paste weldering with steel plate for non-90 ° of angles for 90 ° of angles;
3) reinforcing cage 4 is set in cavity, reinforcing cage 4 should be pressed close to multi-cavity steel tube 1 inwall;
4) concreting 2 in multi-cavity steel tube 1 is after the moulding in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set.
More than be exemplary embodiments of the present invention, enforcement of the present invention is not limited thereto.

Claims (8)

1. the bight is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it is characterized in that: it comprises multi-cavity steel tube (1), is filled in the interior concrete (2) of multi-cavity steel tube, pastes the angle steel (3) that is welded in bight, the multi-cavity steel tube outside and places the reinforcing cage (4) in the multi-cavity steel tube; The corner that angle steel (3) pastes the bight that is welded in the multi-cavity steel tube concrete post and needs to strengthen; Reinforcing cage (4) is arranged in the cavity of multi-cavity steel tube concrete post.
2. bight according to claim 1 is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it is characterized in that: directly paste weldering rolling angle iron (3) for 90 ° of angles, for non-90 ° of angles, then curve respective angles with steel plate and paste weldering; Paste the leg steel should put in the basis and with its anchoring.
3. bight according to claim 1 is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it is characterized in that: the concrete column cross sectional shape is combined by circle, triangle, rectangle.
4. bight according to claim 2 is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it is characterized in that: the concrete column cross sectional shape is combined to form the table tennis bat tee section or is combined to form the fusiformis cross section by rectangle and triangular-section for circular and square-section.
5. bight according to claim 1 is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set; It is characterized in that: angle steel (3) welds for pasting with multi-cavity steel tube (1) type of attachment; The steel of angle steel adopt Q235, and thickness is 1/3~1/2 of multi-cavity steel tube steel plate thickness.
6. bight according to claim 1 is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it is characterized in that: angle steel (3) height above ground level or flooring that connects usefulness is preferably 1/3h, and h is the height of multi-cavity steel tube concrete post.
7. bight according to claim 1 is pasted in the leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set, and it is characterized in that: said reinforcing cage (4) is made up of vertical muscle and circle or ring-shaped stirrup.
8. the preparation method that reinforcing cage multi-cavity steel tube concrete post is set in the leg steel chamber is pasted in bight according to claim 1, and it is characterized in that: its making step is following:
1), pastes leg steel (3) in bight, multi-cavity steel tube (1) outside;
2) in the cavity of the multi-cavity steel tube (1) of multi-cavity steel tube concrete post, reinforcing cage (4) is set, and positions;
3) concrete perfusion (2) carries out maintenance, is after the shaping in the bight subsides leg steel chamber reinforcing cage multi-cavity steel tube concrete post is set.
CN2011104600735A 2011-12-31 2011-12-31 Multi-cavity concrete-filled steel tube column with angle bars bonded and welded at corners and reinforcing cages arranged in cavities and construction method of multi-cavity concrete-filled steel tube column Pending CN102535747A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103122676A (en) * 2012-12-04 2013-05-29 北京工业大学 Corner-reinforced steel tube concrete composite column and manufacturing method thereof
CN103184782A (en) * 2013-04-09 2013-07-03 广西大学 L-shaped steel concrete special-shaped column of supporting angle steel framework
CN103615072A (en) * 2013-11-25 2014-03-05 广西大学 Steel-encased concrete steel column with built-in spiral stirrup
CN103741882A (en) * 2014-01-15 2014-04-23 北京工业大学 Multi-cavity concrete filled steel tubular column with reinforcement cage and implementation method
CN104594651A (en) * 2015-01-13 2015-05-06 金陵科技学院 Framework post corner protector
CN111962768A (en) * 2020-09-11 2020-11-20 广东工业大学 Multi-cavity composite material concrete special-shaped column

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CN1837527A (en) * 2006-04-06 2006-09-27 黄昱元 Profiled angle steel reinforced concrete structure, structure and member combination
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CN101824878A (en) * 2010-04-16 2010-09-08 北京工业大学 Multi-cavity steel tube concrete superposed column and preparation method thereof
CN202627325U (en) * 2011-12-31 2012-12-26 北京工业大学 Concrete column with angle irons welded on corners and reinforcing cage and multi-cavity steel pipe arranged in cavity

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Publication number Priority date Publication date Assignee Title
JPH0470436A (en) * 1990-07-12 1992-03-05 Ohbayashi Corp Mold form for precast concrete pillar
CN1837527A (en) * 2006-04-06 2006-09-27 黄昱元 Profiled angle steel reinforced concrete structure, structure and member combination
CN101235661A (en) * 2008-03-10 2008-08-06 沈阳建筑大学 Carbon fiber-reinforced plastic steel reinforced-steel tube concrete combination column
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103122676A (en) * 2012-12-04 2013-05-29 北京工业大学 Corner-reinforced steel tube concrete composite column and manufacturing method thereof
CN103122676B (en) * 2012-12-04 2016-05-25 北京工业大学 Bight reinforced steel pipe concrete superposed column and the practice
CN103184782A (en) * 2013-04-09 2013-07-03 广西大学 L-shaped steel concrete special-shaped column of supporting angle steel framework
CN103184782B (en) * 2013-04-09 2016-08-10 广西大学 The L-shaped steel reinforced concrete special-shaped columns of supporting role's steel skeleton
CN103615072A (en) * 2013-11-25 2014-03-05 广西大学 Steel-encased concrete steel column with built-in spiral stirrup
CN103741882A (en) * 2014-01-15 2014-04-23 北京工业大学 Multi-cavity concrete filled steel tubular column with reinforcement cage and implementation method
CN103741882B (en) * 2014-01-15 2016-08-17 北京工业大学 A kind of band steel reinforcement cage Multicarity steel core concrete column and implementation
CN104594651A (en) * 2015-01-13 2015-05-06 金陵科技学院 Framework post corner protector
CN111962768A (en) * 2020-09-11 2020-11-20 广东工业大学 Multi-cavity composite material concrete special-shaped column

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Application publication date: 20120704