• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索

Author:

Tan, Qing-Hua (Tan, Qing-Hua.) | Gardner, Leroy (Gardner, Leroy.) | Han, Lin-Hai (Han, Lin-Hai.) | Song, Tian-Yi (Song, Tian-Yi.)

Indexed by:

EI Scopus SCIE

Abstract:

The post-fire performance of concrete-filled stainless steel tubular (CFSST) columns subjected to an entire loading-fire history, including four characteristic phases: (i) ambient temperature loading, (ii) heating, (iii) cooling with constant external loads, and (iv) post-fire loading, is investigated in this paper. Sequentially coupled thermal-stress analyses are performed using ABAQUS to establish the temperature field and structural response of CFSST columns. To improve the precision of the finite element analysis (FEA) models, the influence of moisture on the thermal conductivity and specific heat of the concrete in the heating and cooling phases is considered by using subroutines. Existing fire and post-fire test data on CFSST columns are used to validate the FEA modelling. Comparisons between FEA and test results indicate that the accuracy of the model is acceptable; the FEA model is then extended to simulate CFSST columns subjected to the four characteristic phases. The behaviour of the CFSST columns during the four characteristic phases is explained by analysis of the temperature distribution, load versus axial deformation relations, failure modes and internal force redistribution. The excellent post-fire performance of CFSST columns is examined in comparison with traditional concrete-filled carbon steel tubular (CFST) columns with the same total cross-sectional area. The residual strength index is studied with respect to a series of parametric analyses. It is found that the residual strength of CFSST columns is higher than that of CFST columns after the same fire exposure, and that the diameter of the stainless steel tube, slenderness, heating time ratio and load ratio have a significant influence on the residual strength index.

Keyword:

Fire safety engineering Post-fire Concrete-filled stainless steel tubular (CFSST) columns Residual strength Finite element analysis (FEA) modelling

Author Community:

  • [ 1 ] [Tan, Qing-Hua]Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha, Peoples R China
  • [ 2 ] [Gardner, Leroy]Imperial Coll London, Dept Civil & Environm Engn, London, England
  • [ 3 ] [Han, Lin-Hai]Tsinghua Univ, Dept Civil Engn, Beijing, Peoples R China
  • [ 4 ] [Song, Tian-Yi]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China

Reprint Author's Address:

  • [Han, Lin-Hai]Tsinghua Univ, Dept Civil Engn, Beijing, Peoples R China

Show more details

Related Keywords:

Source :

THIN-WALLED STRUCTURES

ISSN: 0263-8231

Year: 2020

Volume: 149

6 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:115

Cited Count:

WoS CC Cited Count: 30

SCOPUS Cited Count: 32

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

Online/Total:1428/10611683
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.