大跨度斜撑转换结构的抗震性能分析  

Seismic Performance Analysis onLarge Span BraceTransfer Structure

作　　者：郭昌奇 沈小璞[1] 储晓路 

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230022

出　　处：《安徽建筑大学学报》2015年第3期13-17,共5页Journal of Anhui Jianzhu University

基　　金：住房城乡建设部科学技术计划项目(K2012403)

摘　　要：对大跨度斜撑转换层结构,通过改变转换层以下柱子的截面尺寸和转换层层高来改变转换层与其上下层的侧向刚度,利用有限元软件SAP2000进行反应谱法分析,得到结构的周期比、层间位移角、顶点位移等指标,并将这些指标进行分析比较,得出最优设计方案。分析表明,转换层层高越高,结构的抗震性能越好,对应的设计方案最优。最后,对最优设计方案进行Push-over分析,了解结构在大震下的抗震性能。To obtain the optimal design scheme of large-span structure with braced conversion layer, the section sizes of pillars under the conversion layer and the height of conversion layer were changed to gain different lateral stiffness between the conversion layer and adjacent layers, and the response spectrum analysis was adopted based on the finite element software SAP2000 to obtain the indices including the cycle ratio, interlayer displacement angle and top displacement , and the comparison of the indices were analyzed. It was concluded that the higher the conversion layer is, the better the seismic performance of the structure corresponding of the design scheme would be. Finally, the PUSH-OVER analysis of the optimal design scheme was conducted to acquaint the seismic performance of the structure under major earthquake.

关 键 词：大跨度斜撑转换层 结构抗震性能分析 

分 类 号：TU411.01[建筑科学—岩土工程]