空间钢框架结构的非线性全过程分析  

A FULL RANGE NONLINEAR ANALYSIS FOR SPACE STEEL FRAMES

作　　者：舒兴平[1] 沈蒲生[1] 

机构地区：[1]湖南大学土木系

出　　处：《工程力学》1997年第3期36-43,共8页Engineering Mechanics

基　　金：湖南省自然科学基金

摘　　要：本文采用有限变形理论及内力屈服面塑性流动理论对空间钢框架的极限承载力进行了弹塑性大变形全过程分析。理论与算例都表明，本文方法精度较高，而计算又不过于复杂。Based on the virtual work increment equation for the three dimensional continuum and stress-resultant yield surface plastic rule, the updated Lagrangian formulation is developed, and a new type of geometric stiffness matrix is presented. The numerical examples verify that the theoretical method derived in this paper has very high precision and efficiency.

关 键 词：框架 屈服面 极限承载力 空间框架 弹塑性 

分 类 号：TU323.502[建筑科学—结构工程] TU391.02