不同类型单层球面网壳动力时程分析  

The Dynamic Analysis of Different Types of Single-Layer Spherical Latticed Shell

作　　者：吴军强[1] 李海旺[1] 

机构地区：[1]太原理工大学建筑工程学院,太原030024

出　　处：《安徽师范大学学报（自然科学版）》2014年第4期347-351,共5页Journal of Anhui Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(50878137);山西省科技攻关项目(20080321086);山西省归国留学基金项目(2009-26)

摘　　要：本文利用ansys有限元软件,以60m跨的凯威特、施威德勒、联方型单层球面网壳为研究对象,研究其弹塑性动力失稳情况.设计时考虑材料几何非线性效应,钢材选为双线性弹性材料模型.采用增大地震峰值加速度的方法,通过选用四条地震波和一条人工地震波,对不同网壳结构的整体稳定性和抗震性能进行了讨论.并对不同网壳的抗震性能及地震波的选取提出了建议.With the help of the finite element software ANSYS,the paper studied the dynamic instability of the 60m span＇s Kewitte,Schwedler,Lamella single-layer spherical latticed shell.In designing,the geometric nonlinearity effect of material was considered,thus the bilinear elastic material model was chosen as the steel material.By using the method of increasing the peak acceleration of the earthquake and choosing four different seismic waves and an artificial wave,the paper discussed the overall stability and seismic performance of different latticed shell structures and put forward some suggestions on the seismic performance and the choosing of the seismic waves of different latticed shell structures.

关 键 词：ANSYS有限元软件 单层球面网壳 弹塑性 地震峰值加速度 

分 类 号：TU330.1[建筑科学—结构工程]