钢筋混凝土柱低周反复试验数值分析的参数研究

英文篇名：Parameter research on numerical analysis of low-cyclic loading test of RC columns
中文刊名：土木工程学报
英文刊名：China Civil Engineering Journal
作者：解琳琳 ; 叶献国 ; 种迅 ; 蒋庆
英文作者：Xie Linlin1 Ye Xianguo1 ; 2 Chong Xun1 ; 2 Jiang Qing1(1.Hefei University of Technology ; Hefei 230009 ; China ; 2.Anhui Provincial Civil Structural and Material Laboratory ; Hefei 230009 ; China)
中文关键词：本构关系 ; 基于力的梁柱单元 ; 低周反复荷载 ; 滞回反应 ; 能量耗散系数
英文关键词：constitutive model ; nonlinear-beam-column element ; low cyclic and reciprocal loading ; hysteresis response ; energy dissipation coefficient
出版日期：2012-07-15
机构：合肥工业大学;安徽土木工程结构与材料省级实验室;
年：2012
期：S1
出版单位：土木工程学报

摘要

为较好研究钢筋混凝土柱抗震性能的数值模拟方法,本文通过合理选取材料本构关系,采用有限元软件OpenSees中由纤维截面建立的基于力的梁柱单元对课题组2根及清华大学4根钢筋混凝土柱低周反复加载试验试件进行数值模拟,并与试验结果进行对比。结果表明,采用基于力的纤维截面梁柱单元能够较好地模拟低周反复荷载作用下柱的滞回反应以及耗能特性;基于修正的Kent-Park方法计算的受约束混凝土本构关系参数能较好地体现柱的受力特征。
In order to study the numerical simulation method of the seismic performance of reinforced concrete column,numerical simulation of 2 column specimens and 4 columns of Tsinghua University under low cyclic and reciprocal load are carried out by the use of nonlinear-beam-column element based on fiber model in finite software OpenSees in this paper.The comparison of simulated results and experimental results indicates that nonlinear-beam-column element can be efficiently used to simulate the hysteresis response and the characteristic of energy dissipation of columns,and the constitutive model of confined concrete based on modified Kent-Park method can reflect mechanical characteristics of columns.

引文

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