气柜加肋壳体结构的抗震弹塑性性能分析  

Elastic-plastic Seismic Analysis of Gasholder Stiffened Shell

作　　者：贾冬云[1] 高展 王涛[1] 刘健文 JIA Dongyun;GAO Zhan;WANG Tao;LIU Jianwen(School of Civil Engineering and Architecture,Anhui University of Technology,Ma＇anshan 243032,China)

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2018年第2期167-172,共6页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省自然科学基金项目(1708085ME126);安徽工业大学研究生创新研究基金项目(2017060)

摘　　要：运用均布加载、倒三角形加载、基本振型加载等方式对气柜结构进行静力弹塑性分析,合理选择8条地震波,运用动力时程分析法对气柜加肋壳体进行动力弹塑性分析。对比静力与动力弹塑性分析结果表明,采用基本振型加载方式得到气柜结构的顶点位移最大。采用此加载方式对气柜结构在初始应力条件下的动力弹塑性性能进行分析,依据分析数据拟合罕遇地震下气柜结构的顶点位移计算公式,采用ANSYS计算结果验证了计算公式的有效性。Static elastic-plastic analysis of gasholder structure is carried out by means of uniform loading, inverted triangle loading and basic-vibration-mode loading. 8 seismic waves were reasonably selected and dynamic time history analysis was employed to fulfill the dynamic elastic-plastic analysis of it. By comparing the results of static and dynamic elastoplastic analysis, it is shown that the maximum roof displacement is obtained by using the basic- vibration-mode loading. With this loading mode, the dynamic elastoplastic performance of gasholder structure under initial stress is analyzed. According to the analysis data, the calculating formula of the roof displacement of gasholder structure under rare earthquake is fitted. The validity of the formula is verified by ANSYS calculations.

关 键 词：气柜 加肋壳体 抗震性能 弹塑性分析 顶点位移 

分 类 号：TU392.6[建筑科学—结构工程]