单层柱面网壳的自振特性和地震响应分析

Dynamic Analysis of the Free Vibrations and Seismic Responses of the Single-Layered Cylindrical Grid Shell

分析了网壳跨度、长度、矢跨比、支座刚度和网格尺寸对单斜杆型单层柱面网壳结构自振特性的影响 ,计算了这种网壳在不同方向地震作用下的动力响应 .

It is analyzed how the span,length,ratio of the height to the span,stiffness of supports,size of the grids,influence the free vibrations of the structure of the single layered cylindrical grid shell made of single diagonal rods.The seismic responses of this grid shell to earthquakes from different directions are calculated.A discussion is presented to deal with the rules of frequency changes of the shell's free vibrations.