既有结构的动力有限元建模方法研究

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英文篇名：STUDY OF THE DYNAMIC FINITE ELEMENT MODELING METHOD FOR EXISTING STRUCTURES 中文刊名：低温建筑技术 英文刊名：Low Temperature Architecture Technology 作者：冷巧娟 ; 钱江 ; 张熠 ; 雷拓 ; 梁姗姗 英文作者：LENG Qiao-juan1 ; QIAN Jiang1 ; ZHANG Yi1 ; LEI Tuo1 ; LIANG Shan-shan2(1.State Key Lab for Disaster Reduction in Civil Engineering ; Tongji University ; Shanghai 200092 ; China ; 2.Industrial Design Institute of Guangxi Zhuang Autonomous Region ; Guangxi Nanning 530022 ; China) 中文关键词：既有结构 ; 有限元分析 ; 基频变化率 英文关键词：existing structure ; finite element analysis ; fundamental frequency change rate 出版日期：2010-08-28 机构：同济大学土木工程防灾国家重点试验室;广西壮族自治区工业设计院; 年：2010 期：08 出版单位：低温建筑技术

摘要

针对存在性能退化的既有结构,提出了同时考虑单元刚度变化和单元材料阻尼比变化的损伤建模方式。以三层钢筋混凝土框架结构为例,进行有限元建模分析。计算不同构件发生破坏时该结构的基频变化率。计算结果表明:各构件的损伤对结构的影响是不同的;同时考虑构件刚度和构件阻尼比变化能够更真实的反应既有结构的动力特性。提出的同时考虑刚度和阻尼变化的建模方法可为进行既有结构的计算机仿真分析及研究既有结构的抗震性能提供依据。
The damage modeling method for existing structures considering the changes in element stiffness and element material damping ratio simultaneously is developed.Then the fundamental frequency change rates of 3-storey reinforced concrete frame with different damage situation are calculated.The results show that the fundamental frequency change rate can reflect the damage degree of members and structures.The modeling method which considers the changes in element stiffness and element material damping ratio simultaneously provides basis for simulation analysis of the existing structures.

引文

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