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[会议论文]

Compressive and flexural behaviour of concrete filled steel tubes after exposure to standard fire

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author:

Han, LH (Han, LH.) [1] | Huo, JS (Huo, JS.) [2] | Wang, YC (Wang, YC.) [3]

Indexed by:

CPCI-S

Abstract:

This paper describes a series of new compression and bending tests carried out on concrete filled steel tubes (CFST) after exposure to the ISO-834 standard fire. Previously developed theoretical models are used to predict the post-fire load versus deformation relationships of CFST stub columns and beams. The predicted curves of load versus deformation are in good agreement with the new test results. The previously developed formulas are used to calculate the composite section residual ultimate strength under axial compression or flexural bending and the composite section residual flexural stiffness. In these formulas, the ambient temperature compression resistance, bending moment capacity and initial flexural stiffness of the composite section should be calculated using an existing design code. In this paper, these formulas are applied to the new test data to assess the suitability of using one of the following design codes: AIJ-1997, ATSC-LRFD-1999, BS5400-1979, DBJ13-51-2003 and EC4-1994.

Keyword:

beams bending moment capacity composite columns flexural stiffness hollow sections post-fire residual strength

Community:

  • [ 1 ] Fuzhou Univ, Coll Civil Engn & Architecture, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • 韩林海

    [Han, LH]Fuzhou Univ, Coll Civil Engn & Architecture, Fuzhou 350002, Peoples R China

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Source :

PROCEEDINGS OF THE EIGHTH INTERNATIONAL SYMPOSIUM ON STRUCTURAL ENGINEERING FOR YOUNG EXPERTS, VOLS 1 AND 2

Year: 2004

Page: 572-579

Language: English

Cited Count:

WoS CC Cited Count: 1

30 Days PV: 5

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