某多跨不等高厂房改造结构动力时程分析

该厂房需要结构改造，柱间需增设轻型薄腹钢梁来设置吊顶．利用SAP2000建立一榀框架模型，对该厂房按现状及改造后两种工况进行动力时程分析，探究其在两种工况下的动力特性，研究结构的顶点位移反应和增设牛腿处节点位移反应的影响．并对其进行静力弹塑性分析，分析结构的塑性铰的发展和分布．分析表明，改造结构使厂房的横向结构体系抗震变形得到控制，为类似工程的改造设计提供了参考．

Dynamic Time - History Analysis of a Multi - span Factory Building with Different Heights

In order to improve the use of certain multi - span factory buildings, it needs to add technical requirements to set up thin belly girders to set ceiling. The dynamic time history analysis was carried out in this paper to study the seismic behavior of the structure under different seismic waves using SAP2000. The displace- ment of top vertex and node at the additional corbel were discussed. The pushover analysis, development and distribution of plastic hinge were discussed. The result shows that the transverse deformation of the structure with earthquake is under control. And the structural transformation can provide as references for the similar engineer- ing.