摘要
采用通用有限元软件ABAQUS对空心薄壁方钢管混凝土轴压柱局部屈曲性能进行了分析,并将计算结果与试验结果进行比较,结果表明二者基本吻合。为方便判断构件是否发生局部屈曲,提出了屈强系数的概念。在此基础上,分别考虑了不同参数变化对构件局部屈曲性能的影响,并确定出了空心薄壁方钢管混凝土柱局部屈曲时宽厚比限值为60 235/fy。
ABAQUS software is used to perform nonlinear finite element analysis of local buckling behavior of thin-walled hollow concrete-filled rectangular steel tube under axial compression, and the calculated lood-deformation curves are in good agreement with those of tests. The concept of the buckling-strength coefficient to determine whether the local buckling occurs in the member is put forward. By considering the effect of different parameters, the limiting value of width-to-thickness ratio is identified as 60 √235/fy.
出处
《建筑结构》
CSCD
北大核心
2010年第1期19-22,14,共5页
Building Structure
关键词
空心方钢管混凝土
薄壁
轴压
局部屈曲
宽厚比
屈强系数
hollow concrete-filled rectangular steel tube
thin-walled
axial compression
local buckling
width-to-thickness ratio
buckling-strength coefficient
