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author：

Zhu, Y. (Zhu, Y..) [1] | Cai, S. (Cai, S..) [2] | Xu, Y. (Xu, Y..) [3] | Xiong, C. (Xiong, C..) [4] (Scholars：熊传祥) | Zhang, C. (Zhang, C..) [5] (Scholars：章灿林) | Chen, Y. (Chen, Y..) [6] (Scholars：陈誉) | Chen, W. (Chen, W..) [7] | Lin, X. (Lin, X..) [8]

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Scopus

Abstract：

This　paper　presents　experimental　investigations　on　axial　mechanical　properties　of　circular　concrete-filled　stainless　steel　tube　(CFSST)　columns　after　exposure　to　temperature　and　sliding.　A　total　of　117　CFSST　specimens　were　tested　under　axial　compression　loading　with　four　factors　(i.e.,　tube　thickness,　temperature,　duration,　and　concrete　compressive　strength)　considered.　Test　results　indicated　that　the　initial　stiffness　of　circular　CFSST　short　columns　was　degenerated　due　to　high-temperature　sliding.　Circular　CFSST　specimens　exhibited　a　50.9%　lowest　residual　strength　at　1000　℃.　The　influence　of　high-temperature　duration　on　the　residual　strength　of　circular　CFSST　short　columns　was　limited.　The　residual　strength　of　specimens　was　positively　correlated　with　the　thickness　and　concrete　compressive　strength.　All　circular　CFSST　columns　after　exposure　to　temperature　and　sliding　experienced　an　outward　local　buckling　under　axial　compression.　In　addition,　the　parameters　formulae　of　residual　strength　for　circular　CFSST　columns　after　exposure　to　temperature　and　sliding　are　proposed,　which　achieve　sufficient　accuracy.　The　research　could　offer　valuable　references　for　strengthening　circular　CFSST　columns　after　fire.　©　2023

Keyword：

Circular CFSST Composite columns Initial stiffness Residual strength

Community：

  • [ 1 ] [Zhu Y.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Cai S.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Xu Y.]Zijin School of Geology and Mining, Fuzhou University, Fuzhou, 350116, China
  • [ 4 ] [Xiong C.]Zijin School of Geology and Mining, Fuzhou University, Fuzhou, 350116, China
  • [ 5 ] [Zhang C.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 6 ] [Zhang C.]International and Hong Kong, Macao and Taiwan Joint Laboratory of Structural Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 7 ] [Chen Y.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 8 ] [Chen Y.]International and Hong Kong, Macao and Taiwan Joint Laboratory of Structural Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 9 ] [Chen W.]International and Hong Kong, Macao and Taiwan Joint Laboratory of Structural Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 10 ] [Chen W.]Chinese National Engineering Research Centre for Steel Construction (Hong Kong Branch), The Hong Kong Polytechnic University, Hong Kong
  • [ 11 ] [Chen W.]Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
  • [ 12 ] [Lin X.]Fujian Haofa Construction Development Co., Ltd., Fuzhou, 350200, China

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Source ：

Structures

ISSN： 2352-0124

Year： 2023

Volume： 57

3 . 9

JCR@2023

3 . 9 0 0

JCR@2023

JCR Journal Grade：1

CAS Journal Grade：2

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 2

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

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30 Days PV： 0

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