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author:

Han, L.-H. (Han, L.-H..) [1] | Lin, X.-K. (Lin, X.-K..) [2] | Wang, Y.C. (Wang, Y.C..) [3]

Indexed by:

Scopus

Abstract:

This paper provides new test data of cyclic behavior of repaired concrete-filled steel tubular (CFST) columns after exposure to fire, the fire-damaged CFST columns being strengthened by wrapping the original columns by concrete and a thin-walled steel tube. The test parameters included the cross-section type (circular, square and rectangular), and the axial load level (0, 0.3, 0.6). It was found that all the test specimens behaved in a ductile manner and testing proceeded in a smooth and controlled way. Based on the experiment measurements, the ultimate lateral strength, flexural stiffness, dissipated energy and ductility of the columns are analyzed and compared. The test results indicate that the ultimate lateral strength and flexural stiffness of concrete-filled hollow structural columns decrease after exposure to fire, however, the ductility of the columns was not adversely affected due to the fire exposure. The test results also indicate that the strength and stiffness of the fire-damaged columns can be restored over the original level of the specimens. © 2006 Elsevier Ltd. All rights reserved.

Keyword:

Composite columns; Concrete; Cyclic load; Ductility; Fire; Hollow sections; Post-fire; Repairing; Residual strength; Seismic design

Community:

  • [ 1 ] [Han, L.-H.]Department of Civil Engineering, Tsinghua University, Beijing, 100084, China
  • [ 2 ] [Han, L.-H.]Key Laboratory of Structural Engineering and Vibration, China Education Ministry, Beijing, 100084, China
  • [ 3 ] [Lin, X.-K.]College of Civil Engineering and Architecture, Fuzhou University, Gongye Road 523, Fuzhou, Fujian, Province, 350002, China
  • [ 4 ] [Wang, Y.C.]School of Mechanical, Aerospace and Civil Engineering (MACE), University of Manchester, PO Box 88, Manchester, M60 1QD, United Kingdom

Reprint 's Address:

  • [Han, L.-H.]Department of Civil Engineering, Tsinghua University, Beijing, 100084, China

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Source :

Thin-Walled Structures

ISSN: 0263-8231

Year: 2006

Issue: 10

Volume: 44

Page: 1063-1076

0 . 6 9 4

JCR@2006

5 . 7 0 0

JCR@2023

JCR Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 38

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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