摘要
采用解析法研究"翼缘-卷边"截面的畸变屈曲,采用翼缘和卷边并联抵抗弯曲荷载的模型,提出卷边截面的等效抗弯刚度计算公式。采用解析法分析了Z形和C形截面轴压时的屈曲,得到了局部屈曲和畸变屈曲的临界应力、屈曲系数及其对应的半波长。并提出了精度良好,大部分情况下是略偏安全的计算公式。
It was analyzed the distortional buckling of the flange-lip section in closed form solution .Through modelling the flange-lip section as a parallel system resisting bending loads , it was also proposed formulas to calculate the equivalent bending rigidity of the lip .Using the analytic methods , the bucklings of Z and C sections under axial loading were investigated .The critical stresses of local and distortional bucklings , buckling factors , together with buckling wave-length.Approximate formulas with excellent accuracy were proposed .
出处
《工业建筑》
CSCD
北大核心
2013年第12期38-44,共7页
Industrial Construction
基金
国家十二五支撑计划(2012BAJ13B00)
关键词
局部屈曲
畸变屈曲
冷弯型钢
local buckling
distortional buckling
cold-formed section steel
