CN103924739A - Box-type steel bone-confined concrete column with round steel draw bars and fabrication method of column - Google Patents

Box-type steel bone-confined concrete column with round steel draw bars and fabrication method of column Download PDF

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Publication number
CN103924739A
CN103924739A CN201410140902.5A CN201410140902A CN103924739A CN 103924739 A CN103924739 A CN 103924739A CN 201410140902 A CN201410140902 A CN 201410140902A CN 103924739 A CN103924739 A CN 103924739A
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CN
China
Prior art keywords
box
round steel
reinforcing bar
shaped reinforcing
steel
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Pending
Application number
CN201410140902.5A
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Chinese (zh)
Inventor
曹万林
武海鹏
牛海成
徐萌萌
杨光
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Beijing University of Technology
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Beijing University of Technology
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Priority to CN201410140902.5A priority Critical patent/CN103924739A/en
Publication of CN103924739A publication Critical patent/CN103924739A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a steel bone concrete column, and particularly relates to a box-type steel bone-confined concrete column with round steel draw bars. The box-type steel bone-confined concrete column with the round steel draw bars comprises a box-type steel bone, the round steel draw bars, longitudinal reinforcement, a composite stirrup and concrete, wherein the round steel draw bars are connected with steel plates at two opposite edges of the box-type steel bone through bolts in the middles of the steel plates in a sectioning manner, so that the calculated length of each edge steel plate of the box-type steel bone is effectively reduced, the buckling deformation of each edge steel plate is constrained, and meanwhile, the inspection capability of internal concrete of the steel bone is enhanced by existence of the round steel draw bars. The round steel draw bars are arranged at intervals, so that the pouring quality of the concrete is ensured when the edge steel plates of the box-type steel bone are constrained. Therefore, the concrete disclosed by the invention has the relatively high strength and the good elastic-plastic deformation capacity, and the formed steel bone concrete column has the relatively high bearing capacity, ductility and energy-dissipating capacity.

Description

Band round steel pull bar box-shaped reinforcing bar confined concrete post and the practice
Technical field
The present invention relates to a kind of band round steel pull bar box-shaped reinforcing bar confined concrete post and the practice, be mainly used in the energy dissipation field in building structure.
Background technology
Steel reinforced concrete structure refers to configure the combined structure system of reinforcing bar in ordinary reinforced concrete structure.In steel reinforced concrete structure, reinforcing bar can be divided into two kinds of real abdomen formula and open web types.Real abdomen formula steel reinforced concrete member has good anti-seismic performance, and the anti-seismic performance of open web type steel reinforced concrete member and ordinary reinforced concrete member are basic identical.Therefore, in earthquake resistant structure, adopt at present real abdomen formula steel reinforced concrete member more.Real abdomen formula reinforcing bar can form or directly adopt rolled section steel by the Plate Welding system of spelling.
Research shows, in the situation that the certain structure of configuration requires flexible reinforcing bar, steel and the collaborative work of concrete energy in steel reinforced concrete structure, until the bearing capacity that reaches capacity; Steel reinforced concrete structure combines the two advantage of steel work and reinforced concrete structure.Compared with steel work, it has larger rigidity and damping, is conducive to the distortion of control structure; External wrapping concrete can play reinforcing bar corrosion and the effect that improves structure fire resistance performance of preventing; External wrapping concrete also can prevent reinforcing bar cripling, reinforcing bar intensity is fully used, saving steel.Compare with reinforced concrete structure, reinforcing bar has improved bearing capacity and the ductility of structure, is conducive to reduce sectional dimension of members, is conducive to structural seismic; The reinforcing bar structural system that own formation can independent bearing before concrete casting in steel reinforced concrete, can bear construction live load and dead load, without temporary supporting is set, in multi-rise building, needn't wait for after concrete reaches some strength and constructing again, can shorten the construction period.
In structure design, because architectural design needs, the sectional dimension of post is restricted sometimes, in the time adopting combined steel and concrete column, often joins steel rate to improve its bearing capacity and ductility by improving cross section.As built-in box-shaped reinforcing bar profile steel concrete column, reinforcing bar material from neutral axis away from, larger moment of inertia can be provided, but in the time that the reinforcing bar length of side is long or steel plate thickness is thinner, when box reinforcing bar steel plate bears larger radial pressure, unstability easily occurs, and reinforcing bar declines to concrete restriction ability, then whole profile steel concrete column depression of bearing force.Therefore,, in the time that the box-type section reinforcing bar length of side is long or steel plate thickness is thinner, should adopt effective measures to retrain its bending deformation, to improve bearing capacity and the ductility of whole concrete column.
Summary of the invention
Technical problem to be solved by this invention is: the bearing capacity and the ductility that improve built-in box shaped steel bone confined concrete post, delay or avoid the reduction of the stiffness of structural member, bearing capacity and the ductility that cause due to box reinforcing bar limit steel plate flexing, give full play to the performance of material, simultaneously constructability.In order to address this problem, the present invention proposes band round steel pull bar box-shaped reinforcing bar confined concrete post and the practice.
The technical solution used in the present invention is:
This band round steel pull bar box-shaped reinforcing bar confined concrete post, comprises box-shaped reinforcing bar 1, round steel pull bar 2, longitudinal reinforcement 3, compound stirrup 4, concrete 5; Round steel pull bar 2 connects with relative both sides steel plate segment section bolt in steel plate of box-shaped reinforcing bar 1 respectively, equal height place both direction round steel pull bar 2 is respectively along 1/2~2/3 diametral distance that highly misplaces, longitudinal reinforcement 3 is arranged in reinforcing bar outside along post limit, and configure compound stirrup 4 and retrain longitudinal reinforcement 3 and inner concrete 5, compound stirrup 4 along level configurations between neighbouring two constraint batten plates.
Described band round steel pull bar box-shaped reinforcing bar confined concrete post is rectangle or square-section.
Described box-shaped reinforcing bar 1 is welded by high strength steel plate, and cross sectional shape is box-shaped, is the form of remaining silent, and at middle part, limit, cross section, the hole of passing for round steel pull bar 2 is set.
Described round steel pull bar 2 is strength round steel, evenly arranges along high, and diameter is not less than box-shaped reinforcing bar 1 limit steel plate thickness, and neighbouring two round steel clearance between tiebars are less than 1/2 of box-shaped reinforcing bar 1 edge lengths, and at end mantle fiber.
Described longitudinal reinforcement 3 is high tensile reinforcement, evenly configures along post limit.
Described compound stirrup 4 is high tensile reinforcement, is composited by the two limb stirrups of rectangle and the two limb stirrups of hexagon, and suspension column position reduces spacing and encrypts layout, and other positions are evenly arranged.
Described concrete 5 is high-strength concrete, and strength grade of concrete is greater than C50.
According to technical scheme of the present invention, this band round steel pull bar box-shaped reinforcing bar confined concrete post, its making step is as follows:
1) prefabrication welding box-shaped reinforcing bar 1, and punch along high at limit steel plate middle part;
2) setting circle reinforcing pull rod 2 and outside the steel plate of the limit of box-shaped reinforcing bar 1 nutting, apply pretightning force;
3) reinforcing bar member prefabrication being welded is transported to behind on-the-spot and location, colligation longitudinal reinforcement 3 and compound stirrup 4;
4) formwork supporting plate concrete perfusion 5, carry out maintenance;
5), when concrete reaches after intensity, form band round steel pull bar box-shaped reinforcing bar confined concrete post.
The present invention can obtain following beneficial effect:
The present invention adopts round steel pull bar that the limit steel plate of box-shaped reinforcing bar has been carried out to effective drawknot, reduce the calculated length of limit steel plate, retrain the bending deformation of limit steel plate, the existence of round steel pull bar simultaneously makes reinforcing bar strengthen the concrete restriction ability in its inside, makes box-shaped reinforcing bar bring into play the effect that is better than square steel pipe in concrete-filled steel square tubular column; Longitudinally distribution reinforcement and compound stirrup have a good restriction ability to its inside concrete is same, with the inner concrete of reinforcing bar double constraints, and compound stirrup is arranged between neighbouring round steel pull bar, to played the effect of assistant reinforcement confined concrete without round steel rod section branch mailbox shaped steel bone limit steel plate; Round steel pull bar interval is arranged, in having retrained box reinforcing bar limit steel plate, has been ensured concrete pouring quality; To sum up several respects factor, the concrete in the present invention has higher intensity and good ability of elastic-plastic deformation, and the combined steel and concrete column of formation has higher bearing capacity, ductility and energy dissipation capacity.
The present invention adopts the form of external wrapping concrete, has good fire-resistant, corrosion resistance than steel core concrete column, is conducive to reduce old of maintenance in use procedure.
Brief description of the drawings
Fig. 1 is band round steel pull bar box-shaped reinforcing bar confined concrete post stereogram;
Fig. 2 is band round steel pull bar box-shaped reinforcing bar confined concrete column section figure;
Wherein: 1-box-shaped reinforcing bar, 2-round steel pull bar, 3-longitudinal reinforcement, 4-compound stirrup, 5-concrete.
Detailed description of the invention
Below in conjunction with instantiation, the present invention will be further described:
Embodiment
As shown in Figure 1 and Figure 2, this band round steel pull bar box-shaped reinforcing bar confined concrete post, comprises box-shaped reinforcing bar 1, round steel pull bar 2, longitudinal reinforcement 3, compound stirrup 4, concrete 5; It is on built-in box-shaped combined steel and concrete column basis, to set up round steel pull bar to form.
According to technical scheme of the present invention, this band round steel pull bar box-shaped reinforcing bar confined concrete post, its making step is as follows:
1) prefabrication welding box-shaped reinforcing bar 1, and punch along high at limit steel plate middle part;
2) setting circle reinforcing pull rod 2 and outside the steel plate of the limit of box-shaped reinforcing bar 1 nutting, apply pretightning force;
3) reinforcing bar member prefabrication being welded is transported to behind on-the-spot and location, colligation longitudinal reinforcement 3 and compound stirrup 4;
4) formwork supporting plate concrete perfusion 5, carry out maintenance;
5), when concrete reaches after intensity, form band round steel pull bar box-shaped reinforcing bar confined concrete post.
Be more than exemplary embodiments of the present invention, enforcement of the present invention is not limited to this.

Claims (8)

1. band round steel pull bar box-shaped reinforcing bar confined concrete post, is characterized in that: it comprises box-shaped reinforcing bar (1), round steel pull bar (2), longitudinal reinforcement (3), compound stirrup (4), concrete (5); Round steel pull bar (2) connects with relative both sides steel plate segment section bolt in steel plate of box-shaped reinforcing bar (1) respectively, equal height place both direction round steel pull bar (2) is respectively along 1/2~2/3 diametral distance that highly misplaces, longitudinal reinforcement (3) is arranged in reinforcing bar outside along post limit, and configure compound stirrup (4) constraint longitudinal reinforcement (3) and inner concrete (5), compound stirrup (4) along level configurations between neighbouring two round steel pull bars (2).
2. band round steel pull bar box-shaped reinforcing bar confined concrete post according to claim 1, is characterized in that: its cross sectional shape is rectangle or square.
3. band round steel pull bar box-shaped reinforcing bar confined concrete post according to claim 1, it is characterized in that: box-shaped reinforcing bar (1) is welded by high strength steel plate, cross sectional shape is box-shaped, is the form of remaining silent, and at middle part, limit, cross section, the hole of passing for round steel pull bar (2) is set.
4. band round steel pull bar box-shaped reinforcing bar confined concrete post according to claim 1, it is characterized in that: round steel pull bar (2) is strength round steel, evenly arrange along high, diameter is not less than box-shaped reinforcing bar (1) limit steel plate thickness, neighbouring two round steel clearance between tiebars are less than 1/2 of box-shaped reinforcing bar (1) edge lengths, and at end mantle fiber.
5. band round steel pull bar box-shaped reinforcing bar confined concrete post according to claim 1, is characterized in that: longitudinal reinforcement (3) is high tensile reinforcement, evenly configures along post limit.
6. band round steel pull bar box-shaped reinforcing bar confined concrete post according to claim 1, is characterized in that: compound stirrup (4) is high tensile reinforcement, is composited by the two limb stirrups of rectangle and the two limb stirrups of hexagon.
7. band round steel pull bar box-shaped reinforcing bar confined concrete post according to claim 1, is characterized in that: concrete (5) strength grade is greater than C50.
8. according to the preparation method with round steel pull bar box-shaped reinforcing bar confined concrete post described in claim 1-7 any one, it is characterized in that, step is as follows:
1) prefabrication welding box-shaped reinforcing bar (1), and punch along high at limit steel plate middle part;
2) setting circle reinforcing pull rod (2) and outside the limit steel plate of box-shaped reinforcing bar (1) nutting, apply pretightning force;
3) reinforcing bar member prefabrication being welded is transported to behind on-the-spot and location, colligation longitudinal reinforcement (3) and compound stirrup (4);
4) formwork supporting plate concrete perfusion (5), carry out maintenance;
5), when concrete (5) maintenance is after 28 days, form band round steel pull bar box-shaped reinforcing bar confined concrete post.
CN201410140902.5A 2014-04-10 2014-04-10 Box-type steel bone-confined concrete column with round steel draw bars and fabrication method of column Pending CN103924739A (en)

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CN201410140902.5A CN103924739A (en) 2014-04-10 2014-04-10 Box-type steel bone-confined concrete column with round steel draw bars and fabrication method of column

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CN201410140902.5A CN103924739A (en) 2014-04-10 2014-04-10 Box-type steel bone-confined concrete column with round steel draw bars and fabrication method of column

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049765A (en) * 2016-07-29 2016-10-26 中国建筑第二工程局有限公司 Stirrup framework
CN108643696A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 The wooden railing of high-strength environment-friendly modeling
CN108643697A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 High-strength plastic wood railing
CN108643707A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 Fire prevention high-strength plastic wood stud
CN108643708A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 Outdoor moulds wood stud
CN108643709A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 Mould wood stud
CN111364803A (en) * 2020-03-21 2020-07-03 广州华景建设有限公司 Lateral movement resistant garden pavilion and construction method thereof

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JP2008169691A (en) * 2008-03-25 2008-07-24 Okumura Corp Connecting structure for column and pile
CN101748861A (en) * 2010-01-05 2010-06-23 沈阳建筑大学 Polyvinyl chloride (PVC) pipe reinforced concrete and steel pipe concrete laminated member
CN201835440U (en) * 2010-09-30 2011-05-18 广东杭萧钢构有限公司 Anti-deformation concrete steel pipe column
CN202509685U (en) * 2012-04-01 2012-10-31 东华理工大学 Steel skeleton concrete hybrid structure of high-density polyethylene (HDPE) pipe
CN102912935A (en) * 2012-06-11 2013-02-06 华南理工大学 Rectangular steel pipe concrete column provided with restrictive pull rods and stiffening belts

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Publication number Priority date Publication date Assignee Title
JPH0220764A (en) * 1988-07-06 1990-01-24 Nkk Corp Construction method for square stressed concrete pole
JPH08193421A (en) * 1995-01-13 1996-07-30 Ando Corp Deformation prevention device for column of filling type steel pipe concrete construction and construction method for column of filling/covering type steel pipe concrete construction
CN100353016C (en) * 2005-12-28 2007-12-05 北京工业大学 Square section concrete short pillar hiden with 'slant strength nucleocenter beam' and mfg. method thereof
CN1818276A (en) * 2006-03-08 2006-08-16 哈尔滨工业大学 Ribbed concrete column with built-in high-strength or super-strength concrete core column
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049765A (en) * 2016-07-29 2016-10-26 中国建筑第二工程局有限公司 Stirrup framework
CN108643696A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 The wooden railing of high-strength environment-friendly modeling
CN108643697A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 High-strength plastic wood railing
CN108643707A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 Fire prevention high-strength plastic wood stud
CN108643708A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 Outdoor moulds wood stud
CN108643709A (en) * 2018-04-18 2018-10-12 安徽昊森新材料科技有限公司 Mould wood stud
CN111364803A (en) * 2020-03-21 2020-07-03 广州华景建设有限公司 Lateral movement resistant garden pavilion and construction method thereof
CN111364803B (en) * 2020-03-21 2021-11-05 广州华景建设有限公司 Lateral movement resistant garden pavilion and construction method thereof

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Application publication date: 20140716