地震作用下框架结构的弹塑性反应分析  

Elasto-Plastic Response Analysis for Frame Structures under Earthquake Excitation

作　　者：赵锋雷[1] 吴晓涵[1] 骆剑峰[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》2007年第6期10-14,共5页Structural Engineers

摘　　要：根据弹塑性有限元理论,运用基于AutoCAD的二次开发结构分析软件NosaCad,建立框架结构空间三维杆系模型和平面杆系模型,并分别在双向地震波和单向地震波作用下对框架结构进行弹塑性反应分析,获得各层层间位移角和顶层水平位移时程曲线,并对两组结果进行比较。通过对模型的计算,得到框架结构在地震作用下出现塑性铰的先后顺序以及结构的薄弱环节。Using elasto-plastic finite element analysis theory for reinforced concrete frame structures and NosaCad structural analysis software that is the secondary development software based on AutoCAD, the spatial three-dimensional truss system model and two-dimensional truss system model were established. Based on the analysis of the elasto-plastic response for corresponding truss system model under two-dimensional and one-dimensional earthquake excitation, the interbedded displacement angle and horizontal displacement-time curve were obtained, and two sets of data were compared. Through the analysis of the model, the sequence of appearance of plastic hinges in the frame structure under earthquake excitation was got, and the weak links of the frame structure was also learned.

关 键 词：框架结构 弹塑性反应分析 层间位移角 塑性铰 

分 类 号：TU313[建筑科学—结构工程]