单层球面网壳的动力分析

Dynamic Analysis on Single-Layer Spherical Latticed Shell

运用有限元分析软件ANSYS计算分析了网壳跨度、矢跨比、支座刚度和网格尺寸对凯威特型单层球面网壳结构自振特性的影响.得出了正放四角锥型单层球面网壳结构的自振频率变化规律和抗震设计的有关结论.

Based on the calculations with ANSYS,it is analyzed how span,rise-span ratio,stiffness of supports and size of grids influence the performance of natural vibrations of single-layer Kiewitt spherical latticed shells.Concluded are the variation rules of natural vibration frequencies and the aseismatic design of positive four-angle conical latticed domes.