Comparative study of square stirrup-confined concrete-filled steel tubular stub columns under axial loading

被引：84

作者：

Ding, Fa-xing ^{[1
]}

Lu, De-ren ^{[1
]}

Bai, Yu ^{[2
]}

Zhou, Qi-shi ^{[1
,3
]}

Ni, Ming ^{[1
]}

Yu, Zhi-wu ^{[1
]}

Jiang, Guo-shuai ^{[1
]}

机构：

[1] Cent S Univ, Sch Civil Engn, Changsha 410075, Hunan, Peoples R China

[2] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[3] Natl Engn Lab High Speed Railway Construct, Changsha 410075, Hunan, Peoples R China

来源：

THIN-WALLED STRUCTURES | 2016年 / 98卷

基金：

中国国家自然科学基金;

关键词：

Stirrup confinement; Square concrete-filled steel tubular stub column; Experimental study; Confinement effect; Ultimate load-bearing capacity; Ductility; EXPERIMENTAL BEHAVIOR; DUCTILITY; STRENGTH;

D O I：

10.1016/j.tws.2015.10.018

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents a comparative study and a 3D finite element (FE) model of square stirrup-confined concrete-filled steel tubular (stirrup-confined CFT) stub columns. The FE results agreed well with the experimental results. The results indicated that: (1) The ultimate load-bearing capacity of CFT stub columns with internal studs was no improvement; (2) All three forms of stirrup confinement effectively reduced local bucking of the steel tube, and the cross ties was optimal, followed by spiral stirrups; (3) With the same overall steel ratio, the behavior of the square stirrup-confined CFT stub columns was considerably higher than in the square CFT stub columns. (C) 2015 Published by Elsevier Ltd.

引用

页码：443 / 453

页数：11

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