基于OpenSees的加固震损RC柱拟静力试验数值模拟  

Numerical Simulation for the Pseudo-static Test of Strengthened RC Columns with Earthquake-damage Based on OpenSees

作　　者：尹帅锋 胡克旭[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《结构工程师》2015年第2期145-151,共7页Structural Engineers

基　　金：国家科技支撑计划课题(2009BAJ28B02)

摘　　要：采用基于纤维模型的OpenSees非线性有限元软件,对新型混凝土材料加固的预震损RC柱低周反复加载试验进行了数值模拟分析,采用改进的Park-Ang双参数损伤模型对构件损伤进行计算和材料性能折减,并将模拟结果同试验结果进行了比较分析。结果表明,使用考虑损伤的OpenSees模型能够有效地对构件进行加固后的承载力及受力性能分析。对于模拟中存在的一些问题,通过分析试验给出其主要原因。In this seismically damaged paper, the nonlinear finite element analysis software, OpenSees, was used to analyze the columns strengthened with the new concrete material （NCM）. Theseismic damage was presented by reducing the material properties according to the modified Park-Ang damage formulation. Analysis resultswere compared with the testing measurements. The comparison indicates that the OpenSees model considering earthquake damage can effectively increase the capacity NCM. Some remaining problems with the simulation were and seismic performance of members strengthened with eventually analyzed and the main causeswere analyzed.

关 键 词：加固RC框架柱 拟静力试验 损伤 OPENSEES 数值模拟 

分 类 号：TU375.3[建筑科学—结构工程]