Overall Stability Design of Restrained H Section Steel Columns under Axial Load in Fire
WANG Pei jun,LI Guo qiang and WANG Yong chang
DOI:10.11835/j.issn.1674-4764.2009.04.007
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2009,Pages 31-36
- Abstract
The effects of the restraint stiffness ratio, the axial load ratio and the column slenderness on the buckling temperature and failure temperature of a restrained H section steel column under axial load in fire were studied with a calibrated finite element method (FEM) model. And the calculation methods of buckling temperature and failure temperature were proposed. The effect of the restraint stiffness ratio on the buckling temperature and failure temperatures could be expressed with an exponent curve while polynomial functions was appropriate for the effects of the axial load ratio and the column slenderness. The results of the proposed method were in good agreement with those by FEM method and on the safe side.