工字形截面楔形单元弹性稳定单元刚度矩阵的推导与探讨  

Element Stiffness Matrix of Elastic Stability for I - Tapered Element

作　　者：王俊平[1] 陈进[1] 罗小青[1] 梁怀庆[1] 

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650224

出　　处：《昆明理工大学学报（理工版）》2003年第1期117-122,共6页Journal of Kunming University of Science and Technology(Natural Science Edition)

摘　　要：推导了工字形截面薄壁楔形构件的稳定计算中的单元刚度矩阵,通过分析对比得出在楔形构件的稳定计算中,如果是弯扭失稳,则必须采用楔形单元矩阵。本文推导出的楔形杆件在任意荷载下的弹性稳定单元刚度矩阵,可用其直接形成总刚度矩阵,解算楔形杆的稳定问题。Element stiffness matrix which is applied in stability calculation of I - section thin - wall tapered member is deduced. By analysis and contrast, the conclusion is obtained: in the stability calculation of tapered member , if the buckling is the lateral - torsional buckling, it must use the tapered element matrix to solve the stability problem.

关 键 词：工字形截面 弹性稳定 楔形构件 单元刚度矩阵 稳定计算 

分 类 号：TU311.2[建筑科学—结构工程]