60°角钢轴心受压构件肢件宽厚比限值的研究  

Study of limit value of width-to-thickness ratio of axial compression limb member of 60-degree angle steel

作　　者：程华虎[1] 管明文[2] 黄模佳[1] 

机构地区：[1]南昌大学建筑工程学院,江西南昌330031 [2]江西省电力设计院,江西南昌330096

出　　处：《合肥工业大学学报（自然科学版）》2015年第5期643-647,720,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51268043;11172122);江西省研究生创新专项资金资助项目(YC2013-B014);江西省赣鄱英才555工程资助项目

摘　　要：文章针对60°角钢局部稳定受力性能的问题,以薄壁构件稳定理论为基础,采用Rayleigh-Ritz法进行60°角钢轴心受压构件局部稳定的理论分析,得到60°角钢肢件的临界屈曲应力。根据"等稳定"准则推导出适合于60°角钢肢件宽厚比限值的表达式,与相应的设计方法和计算公式进行了对比分析。并且通过采用有限元分析软件ANSYS对60°角钢进行屈曲分析,验证了60°角钢宽厚比限值表达式的正确性。For the problem of the mechanical performance of local stability of 60-degree angle steel, the theoretical analysis of local stability of axial compression member of 60-degree angle steel is conducted by adopting the method of Rayleigh-Ritz based on the stability theory of thin-walled member, and the critical buckling stress of 60-degree angle steel limb member is obtained. The expression formula suit- able for limit value of width-to-thickness ratio of 60-degree angle steel limb member is deduced accord- ing to the equal stability criterion and then compared with the corresponding design approaches and calculation formulas. And the buckling analysis of 60-degree angle steel is made by using the finite el- ement analysis software ANSYS so as to validate the correctness of the expression formula of limit value of width-to-thickness ratio of 66-degree angle steel.

关 键 词：60°角钢 轴心受压 局部稳定 宽厚比限值 有限元分析 

分 类 号：TU391[建筑科学—结构工程]