【摘要】 稳定性能是单层网壳结构设计的主要控制因素,动力稳定是单层网壳稳定性能的重要组成部分.本文利用非线性有限元理论对点支承两向叉筒单层网壳在地震荷载作用下的动力稳定性进行了分析.在数值分析过程中,利用比例法调整地震作用的峰值加速度,采用B-R准则判定结构的动力稳定临界荷载.通过分析对点支承两向叉筒单层网壳的动力稳定特性有了较全面的了解.更多还原

【Abstract】 The stability behavior of single layer lattice shell structures is the main controlling factor for their structural design,and the dynamic stability is a primary part of the stability behavior.In this paper,based on nonlinear finite element theory,the dynamic stability of the point-supported single layer intersected cylindrical latticed shell structures under the earthquake load is analyzed.In the numerical analysis,the proportional method is used to adjust the acceleration value of the earthquake load,and the B-R rule is used to determine the dynamic stability critical load of the structure.Through the analysis,the behavior of the point-supported single layer intersected cylindrical latticed shell structure is investigated,and some suggestions to their structural design are presented.更多还原