弹塑性梁柱变截面刚度的模拟  

Stiffness Simulation of Elastic-Plastic ofBeam-Column with Varying Section

作　　者：方志[1] 祝彦知[1] 宋启根[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]东南大学土木工程学院,江苏南京210096

出　　处：《河南科技大学学报（自然科学版）》2004年第4期67-70,共4页Journal of Henan University of Science And Technology:Natural Science

摘　　要：利用幂函数模拟的变截面法建立了描述弹塑性梁柱截面刚度变化规律的简化数学力学模型,并分析了荷载作用下塑性梁柱截面刚度沿长度分布的变化规律。与ChenWF的理论结果比较,证明了此模型的正确性。此模型在一定程度上揭示了梁柱塑性区的内在变化规律,且其结果具有直观性和截面刚度计算的简单性。A simplified mathematic-mechanical model for nonlinear analysis of beam-column is presented, using the varying section method of power function to simulate the distributing rule of the section stiffness of plastic beam-column in its longness and its validity is proved. This model to a certain extent unveils the inner distributional regularity of the plastic beam-column,with legible results and character of simple calculation. It can be regarded as a basic model for researching the elastic-plastic beam-column frame.

关 键 词：弹塑性梁柱 变截面 刚度 非线性 幂函数模拟 

分 类 号：TU323[建筑科学—结构工程] TU313