Vol. 6, No. 2, pp. 788-802 (2010)
THERMAL RESPONSE TO FIRE OF UNIFORMLY INSULATED
STEEL MEMBERS: BACKGROUND AND VERIFICATION OF THE
FORMULATION RECOMMENDED BY CHINESE CODE CECS200
Guo-qiang Li 1,2 and Chao Zhang 2,*
1 Sate Key Laboratory for Disaster Reduction in Civil Engineering, 1239 Siping Road, Shanghai, China
2 College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 2 June 2009; Revised: 27 July 2009; Accepted: 10 August 2009
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ABSTRACT
Currently, Chinese technical code for fire safety of steel structures in buildings (CECS200) is being revised. This paper intends to give the background of the recommended formulation in CECS200 for temperature calculation of uniformly insulated steel members. Analytical formulations recommended by other codes including EC3, ECCS, SFPE handbook, etc.., and FE method are used for comparison and verification. Theoretical derivation of the exact analytical formulations is also given. Two boundary conditions at the fire-insulation interface have been discussed in the derivation. By investigating the steel temperature of three insulated sections with different section factors which are protected by typical fire protection materials, the formulation recommended by CECS200 is proved to be reasonable and simple for engineering usage.
KEYWORDS
Fire resistance, uniformly insulated steel members, 1D model, temperature calculation, analytical formulations, FEM
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