Comparative study of square stirrup-confined concrete-filled steel tubular stub columns under axial loading
Comparative study of square stirrup-confined concrete-filled steel tubular stub columns under axial loading
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轴压方箍筋约束钢管混凝土短柱对比研究
DOI：
10.1016/j.tws.2015.10.018
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发表时间：
2016-01-01
影响因子：
6.4
通讯作者：
Jiang, Guo-shuai
中科院分区：
文献类型：
--
作者：
Ding, Fa-xing;Lu, De-ren;Jiang, Guo-shuai
本文对方箍筋约束钢管混凝土短柱进行了对比研究并建立了三维有限元模型。有限元计算结果与实验结果吻合较好。结果表明：(1)加装内钉的CFT短柱的极限承载力没有提高；(2) 3种箍筋约束形式均能有效降低钢管局部屈曲，其中交叉箍筋最优，螺旋箍筋次之；(3)在总钢比相同的情况下，方形箍筋约束CFT短柱的受力性能明显高于方形CFT短柱。(C) 2015年Elsevier Ltd.出版
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.