筒承式群仓水平地震作用分析及简化计算  

Horizontal earthquake action of cylindrical group-silos supported by cylinder

作　　者：滕锴 姜伟 王命平[3] 

机构地区：[1]中国网通(集团)有限公司青岛分公司,青岛266071 [2]青岛东亿实业总公司,青岛266101 [3]青岛理工大学土木工程学院,青岛266033

出　　处：《青岛理工大学学报》2007年第5期14-18,65,共6页Journal of Qingdao University of Technology

基　　金：国家建设部研究开发项目(05-K1-35)

摘　　要：对钢筋混凝土筒承式群仓建立串联多质点体系简化计算模型,采用Baruch法对有限元计算的模态矩阵进行修正,利用振型分解反应谱法计算192个模型的水平地震作用分布及基底剪力.分析钢筋混凝土筒承式群仓水平地震作用分布和基底剪力的影响因素.综合各种影响因素,回归得到筒承式群仓底部剪力法中的基本振型指数的简化计算公式,进而可以得到筒承式群仓水平地震作用及基底剪力的简化计算方法—改进的基底剪力法.：Simplified model of cylindrical group-silos is established and modified by the Baruch Method. The horizontal earthquake action and the shear force of bottom of 192 calculative models are calculated by Modal Analysis Method. According to the results, diversified influencing factors of the horizontal earthquake action and the shear force of bottom which are resemble that of the natural vibration characteristics will be discussed. Analyzing various influencing factors, the regress formula of foundational modal exponential can be obtained. Then, a simple and practical calculation method of the horizontal earthquake action and the shear force of bottom of cylindrical group-silos supported by cylinder can be achieved to improved Equivalent Base Shear Method.

关 键 词：筒承式群仓 水平地震作用 基底剪力 

分 类 号：TU249.9[建筑科学—建筑设计及理论]