倒挂结构的地震作用计算分析

Calculation and analysis of seismic action of inverted structure

倒挂结构由于质量上移,地震作用引起的效应增大;按现有整体分析计算程序,计算各层重力荷载代表值(质量)的分布时,倒挂结构的竖向构件拉力未统计到各层重力荷载代表值(质量)中,造成地震作用引起的效应偏小。根据上述存在的问题,对各层重力荷载代表值(质量)的分布进行调整,重新计算各层水平地震作用,计算出调整前后各层水平地震作用的比值,对现有整体分析计算程序计算的各层水平地震作用进行调整,以满足结构的实际受力状态。

The effect earthquake action increases due to the upward movement of mass of hanged structure;according to the existing overall analysis and calculation program,when calculation the mass distribution of each layer,The tension vertical members of hanged structure is not counted in the mass of each layer,The effect caused by action increases is slightly smaller.according to the problems mentioned above,in this paper,the mass distribution of each layer is adjusted,Recalculating horizontal seismic action of each layer,The ratio of horizontal seismic action of each layer before and after adjustment is calculated,Adjustment of Horizontal earthquake action of each layer calculated by the existing overall analysis and calculation program,To satisfy the actual stress state of the structure.