高强等边角钢轴压杆局部-整体相关屈曲分析  

Local-overall Interaction Buckling Analysis of High-strength Steel Equal Angle Members under Axial Compression

作　　者：李清扬[1] 冯圆圆[1] 刘远鹏[2] 李颖[3] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北工程大学建筑设计研究院,河北邯郸056038 [3]河北工程大学成人教育学院,河北邯郸056038

出　　处：《河南科技大学学报（自然科学版）》2016年第6期61-65,71,共6页Journal of Henan University of Science And Technology:Natural Science

基　　金：河北省自然科学基金项目(E2010001012)

摘　　要：采用ANSYS有限元软件,考虑初始缺陷和双重非线性,对25根高强等边角钢轴压杆的局部-整体相关屈曲进行了数值分析,得到其局部-整体相关屈曲的极限承载力。分析了不同的肢件宽厚比及屈服强度对局部-整体相关屈曲的极限承载力的影响,利用相关屈曲法推导了高强等边角钢轴压杆的相关屈曲建议公式。分析结果表明:相关屈曲建议公式具有合理性,可为今后的工程设计提供参考。By using the finite-element software ANSYS,the local-overall interaction bucklings of 25 highstrength steel equal angle members under axial compression were analyzed. Considering the initial imperfections and double nonlinearities,the ultimate bearing capacity of local-overall interaction buckling uctimate bearing capacity was obtained. The effect of different width-thickness ratio of the angle leg and yield strength on the ultimate bearing capacity of local-overall interaction buckling was analyzed. By using the approach of interactive buckling,the interactive buckling formulas were obtained for the high-strength steel equal angle members under axial compression. The rationality of the formulas is proved which can provides a reference for future engineering design.

关 键 词：高强等边角钢 轴压杆 局部-整体相关屈曲 极限承载力 有效屈服强度法 相关屈曲法 

分 类 号：TU392.1[建筑科学—结构工程]