水资源与水工程学报2013，Vol.24Issue(4)：71-73,3.
轴心受压钢柱火灾后稳定承载力研究
Study on stability bearing capacity of steel column under axial compression after fire
摘要
Abstract
The section of steel column under axial compression presents the state of heterogeneous mechanics and its load condition changes after experiencing fire damage.Taking H-section steel column under axial compression commonly used in engineering for study object,in order to study the residual load bearing capacity after fire and consider the strength change of the material after high temperature and the influence of non-uniform temperature field on material properties and the stiffness degradation of member section,the eccentric effect of steel column under axial compression exposure to one-side fire was analyzed by using the method of equivalent section.The paper proposed calculation methods of the eccentricity and additional moment and further given a formula of residual bearing capacity of the column after fire.The rationality of the calculation methods was verified by the analysis of a calculation example.The method can be used not only to calculate the stability bearing capacity of steel column exposed to one-side fire under axial compression after fire,but also to provide new ideas for similar studies.关键词
轴心受压钢柱/火灾后/稳定承载力/非均质材料/等效截面法Key words
steel column under axial compression/ after fire/ stability bearing capacity/ heterogeneous material/ equivalent section method分类
建筑与水利引用本文复制引用
陈建锋,周天华,孙彬生..轴心受压钢柱火灾后稳定承载力研究[J].水资源与水工程学报,2013,24(4):71-73,3.基金项目
中国博士后科学基金资助(2011M501428) （2011M501428）
中央高校基本科研业务费专项资金(CHD2012TD012) （CHD2012TD012）
