Mechanical Properties of Stirrups Confinement Concrete- Filled Round- Ended Steel Tubular Stub Short Columns Under Axial Compression

doi:10.3969/j.issn.1000-565X.2014.11.017

Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (11): 113-120.doi: 10.3969/j.issn.1000-565X.2014.11.017

• Architecture & Civil Engineering • Previous Articles Next Articles

Mechanical Properties of Stirrups Confinement Concrete- Filled Round- Ended Steel Tubular Stub Short Columns Under Axial Compression

Fu Lei¹ Ding Fa- xing¹ Gu Li- xiong² Gong Yong- zhi¹

1.School of Civil Engineering,Central South University,Changsha 410075,Hunan,China; 2.School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2014-05-23 Revised:2014-07-18 Online:2014-11-25 Published:2014-11-17
Contact: 龚永智(1978-)，男，博士，副教授，主要从事结构加固与改造研究． E-mail:gyzh@yahoo.cn
About author:付磊(1985-)，男，博士，主要从事钢－混凝土组合结构研究．E-mail:fulei19862008@126．com
Supported by:
国家科技支撑计划项目(2011BAJ09B02);新世纪优秀人才支持计划项目(NCET-11-0508)

Abstract

Abstract:

In order to improve the mechanical properties of confinement concrete- filled round- ended steel tubular (CFRT) stub columns,this paper adopts the way of welding stirrups to enhance the constraint effect on core con- crete.Then,the ABAQUS software is employed to analyze the finite element parameters of the 3D solid of stirrups confinement concrete- filled round- ended steel tubular (SCFRT) stub columns in four constraint ways,and the way of bidirectional butt joint stirrups is found to be the best.Finally,two sets of CFRT stub columns and two sets of SCFRT stub columns are investigated by experiments.It is found that the experimental results accord well with the simulation ones,which demonstrates that the way of bidirectional butt joint stirrups is rational.

Key words: concrete- filled steel tube column, round- ended steel tube, axially- compressed short column, mechani- cal property, finite element

CLC Number:

TU398

Fu Lei Ding Fa- xing Gu Li- xiong Gong Yong- zhi. Mechanical Properties of Stirrups Confinement Concrete- Filled Round- Ended Steel Tubular Stub Short Columns Under Axial Compression[J]. Journal of South China University of Technology (Natural Science Edition), 2014, 42(11): 113-120.

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Mechanical Properties of Stirrups Confinement Concrete- Filled Round- Ended Steel Tubular Stub Short Columns Under Axial Compression

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