基于应变和比能双控的钢结构损伤模型

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (7) : 218-222.

论文

基于应变和比能双控的钢结构损伤模型

徐龙河1，杨冬玲1，李忠献2

作者信息 +

Strain and Energy Ratio Based Damage Model of Steel Structures

XU Longhe1, YANG Dongling1, LI Zhongxian2

Author information +

文章历史 +

摘要

损伤模型是对经历地震后结构的剩余承载力进行定量评价的重要工具。本文提出了一个基于等效塑性应变和比能双控的损伤模型，从材料的角度出发，考虑了三轴应力对地震作用下结构性能的影响，可用于空间结构强震作用下的非线性分析。应用该模型对一个九层的benchmark结构进行了地震倒塌模拟分析，结果显示基于应变与比能双控的损伤模型能够很好地评估强震下钢结构竖向构件及层的损伤发展过程。

Abstract

Damage model is an important tool to evaluate quantitatively residual strength of a structure after seismic excitations. From the point of view material, a damage model based on equivalent plastic strain and energy ratio is proposed in this paper, which considers structural behavior under triaxial stress, and it can be used to do the nonlinear analysis of 3-D structures under earthquakes. A nine-story benchmark model structure is built and the damage model is used to evaluate the collapse process of steel frame quantitatively, the results indicate that this damage model can evaluate the process of damage of vertical members and structure effectively.

导出引用

徐龙河;杨冬玲;李忠献. 基于应变和比能双控的钢结构损伤模型[J]. 振动与冲击, 2011, 30(7): 218-222

XU Longhe;YANG Dongling;LI Zhongxian. Strain and Energy Ratio Based Damage Model of Steel Structures[J]. Journal of Vibration and Shock, 2011, 30(7): 218-222