大跨度斜撑转换结构的抗震性能分析

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。

Seismic Performance Analysis on Large Span Brace Transfer Structure

we use the way of hybrid truss to design large-span brace transfer structure. Its above and below is changed by the section size of column under the transformation layer, and the lateral stiffness of the transformation layer is changed by the transformation layer height to study the effect of the lateral stiffness changes on the seismic performance of brace transfer structure. The seismic performance of brace transfer structure is reflected by cycle than, interlayer displacement angle, lateral stiffness and bearing capacity ratio. The optimal design of brace transfer structure is determined by the above indicators. We have Push - over analysis on the optimal design scheme, To understand the structural seismic performance under major earthquakes.