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

Fa-xing Ding; De-ren Lu; Y. Bai; Qi-shi Zhou; Ming Ni; Zhi-wu Yu; Guo-shuai Jiang

doi:10.1016/j.tws.2015.10.018

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

Fa-xing Ding, De-ren Lu, Y. Bai, Qi-shi Zhou, Ming Ni, Zhi-wu Yu, Guo-shuai Jiang

Civil & Environmental Engineering

Research output: Contribution to journal › Article › Research › peer-review

102 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	443-453
Number of pages	11
Journal	Thin-Walled Structures
Volume	98
DOIs	https://doi.org/10.1016/j.tws.2015.10.018
Publication status	Published - 2016

Keywords

Stirrup confinement
Square concrete-filled steel tubular stub
column
Experimental study
Confinement effect
Ultimate load-bearing capacity
Ductility

Access to Document

10.1016/j.tws.2015.10.018

Cite this

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

abstract = "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.",

keywords = "Stirrup confinement, Square concrete-filled steel tubular stub, column, Experimental study, Confinement effect, Ultimate load-bearing capacity, Ductility",

author = "Fa-xing Ding and De-ren Lu and Y. Bai and Qi-shi Zhou and Ming Ni and Zhi-wu Yu and Guo-shuai Jiang",

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journal = "Thin-Walled Structures",

issn = "0263-8231",

publisher = "Elsevier",

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TY - JOUR

T1 - Comparative study of square stirrup-confined concrete-filled steel tubular stub columns under axial loading

AU - Ding, Fa-xing

AU - Lu, De-ren

AU - Bai, Y.

AU - Zhou, Qi-shi

AU - Ni, Ming

AU - Yu, Zhi-wu

AU - Jiang, Guo-shuai

N1 - cited By 5

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Stirrup confinement

KW - Square concrete-filled steel tubular stub

KW - column

KW - Experimental study

KW - Confinement effect

KW - Ultimate load-bearing capacity

KW - Ductility

U2 - 10.1016/j.tws.2015.10.018

DO - 10.1016/j.tws.2015.10.018

M3 - Article

SN - 0263-8231

VL - 98

SP - 443

EP - 453

JO - Thin-Walled Structures

JF - Thin-Walled Structures

ER -