任意形状薄壁钢截面双轴压弯恢复力分析  

RESTORING FORCE ANALYSIS OF STEEL THIN WALLED SECTIONS SUBJECTED TO CYCLIC BIAXIAL BENDING WITH AXIAL LOAD

作　　者：张晋勋[1,2] 沈聚敏[1,2] 

机构地区：[1]北京城建集团 [2]清华大学

出　　处：《工业建筑》1998年第6期26-29,共4页Industrial Construction

摘　　要：为适应高耸结构非线性分析的需要，将任意形状薄壁钢截面划分成适当数目的薄壁直边，通过建立薄壁边截面的面内弯矩及轴力与相应变形之间的广义本构关系合成整个截面的双轴压弯恢复力模型。A multi dimensional restoring force model is proposed for thin walled steel sections subjected to cyclic biaxial bending with axial load.The tangent stiffness matrix of the cross section is constructed on the basis of the tangent stiffness matrix of every edge section of the thin walled section.The latter is constructed on the basis of a two surface plasticity model with nonassociated flow rule.

关 键 词：截面 弹塑性分析 多维恢复力模型 薄壁钢 

分 类 号：TU392.1[建筑科学—结构工程] TU313