摘要
为了研究土与结构相互作用对储罐地震响应的影响,基于Haroun-Housner模型,将地基土考虑为平动和转动的弹簧阻尼体系,将储罐结构体系简化为三质点四自由度力学模型,来研究储罐的地震响应受地基土弹性的影响。分析结果表明:与刚性基础相比,考虑土与结构的相互作用时储罐的基底剪力、倾覆力矩和晃动波高均有放大效应,且与储液高度与半径比相关,为获得理想的地震响应储液高度与半径比存在优化取值区间。
In order to study the effects of soil-structure interaction on the seismic responses of tanks and tank structural systems,based on Haroun-Housner model,the translational and rotational spring damper system considered for the foundation soil is simplified to be three-mass mechanical model with four-degrees-of-freedom to study the seismic responses of tanks influenced by elastic foundation soil.Results show that： the base shear and overturning moment,sloshing wave height of tanks when considering soil-structure interaction compared to those with rigid base are amplified.The amplifying effects are associated with the reservoir liquid height to radius ratio.In order to obtain the ideal seismic responses of storage tanks,there is an optimization segment for the reservoir height to radius ratio.
出处
《地震工程与工程振动》
CSCD
北大核心
2010年第3期141-146,共6页
Earthquake Engineering and Engineering Dynamics
基金
辽宁省教育厅科技基金资助项目(2009A151)
关键词
储罐
土与结构相互作用
基底剪力
倾覆力矩
晃动波高
storage-tanks
soil and structure interaction
base shear
overturning moment
sloshing wave height
