框架结构的三维地震弹塑性分析

英文篇名：The Elasto-plastic Analysis for Frame Structure Under Three-dimensional Earthquake Excitation
中文刊名：工程建设与设计
英文刊名：Construction & Design for Project
作者：朱慧
英文作者：ZHU Hui (Department of Building Engineering ; College of Civil Engineering ; Tongji University ; Shanghai 200092 ; China)
中文关键词：框架结构 ; 地震弹塑性分析 ; 层间位移角
英文关键词：Frame structure ; Elasto-plastic seismic response ; interbedded displacement angle
出版日期：2010-09-20
机构：同济大学土木工程学院;
年：2010
期：09
出版单位：工程建设与设计

摘要

利用弹塑性有限元理论和基于AutoCAD的二次开发结构分析软件NosaCad,引入变刚度梁单元和弹簧模型柱单元,建立框架结构空间三维杆系模型,并分别在双向地震波和单向地震波作用下的框架结构进行了弹塑性反应时程分析,得到了结构的自振周期、各层层间位移角和顶层水平位移曲线,并对两组结果进行比较。通过对框架结构的计算,得到框架结构在地震作用下结构的薄弱环节。
Using the Elasto-plastic finite element theory and NosaCad structural analysis software that is the secondary development software of AutoCAD,spatial three dimensional truss system model was established.This system adopts the beam element with varied stiffness in different regions and column element with spring model.Based on the analysis of the time-history elasto-plastic response for truss system model under two-dimensional and one-dimensional earthquake excitation,the interbedded displacement angle and horizontal displacement curve were obtained,and two sets of data were compared.Through the analysis of the model,the weak links of the frame structure was got.

引文

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