双层储罐结构的地震局部动力效应研究

英文篇名：STUDY ON LOCAL DYNAMIC EFFECT OF TWO-COMPARTMENT LIQUID TANK UNDER SEISMIC FORCE
中文刊名：机械强度
英文刊名：Journal of Mechanical Strength
作者：曲淑英 ; 曲乃泗 ; 杨春秋
英文作者：QU Shuying (Department of Civil Engineering ; Yantai University ; Yantai 264005 ; China) QU Naisi YANG Chunqiu (Department of Engineering Mechanics ; Dalian University of Technology ; Dalian 116023 ; China)
中文关键词：地震作用 ; 局部动力效应 ; 双层储罐结构 ; 质量惯性力
英文关键词：Seismic force ; Local dynamic effect ; Two-compartment liquid tank ; Mass inertial force
出版日期：2002-09-30
机构：烟台大学土木工程系,大连理工大学工程力学系,大连理工大学工程力学系烟台264005 ,大连116023 ,大连116023
年：2002
期：03
出版单位：机械强度

摘要

对层间及内罐同时储液的双层圆柱壳储罐的地震作用进行理论分析。在考虑壳皮单元及附连水的局部动力效应影响的情况下 ,推导回转壳壳皮单元的局部动力效应和回转壳附连水的局部动力效应计算公式 ,同时对双层圆柱壳的刚度阵、质量阵考虑了剪切变形的影响 ,给出动水压力分布规律和动载荷下的动力特性 ,并用这种方法对一个双层圆柱壳储罐的节点动位移、动内力等进行计算。研究发现 ,储罐的局部动力效应正比于节点加速度和单元连续质量 ;由于附连水质量的影响 ,储罐的局部动力效应较其他结构更为显著。这些结论对工程设计是非常有益的
The local dynamic effect of two-compartment liquid tank, which simultaneously reserve liquid at layer-to-layer and internal tank, under seismic force has been theoretically analyzed. The local dynamic formulas of shell cortical units and attached-water for rotatory shell are derived. The dynamic hydraulic pressure contribution and dynamic characteristic under dynamic loading are obtained after shear distortion of stiffness matrices and mass matrices of two-compartment cylindrical shell is considered. By using the method the nodal displacement and unitary dynamic internal force for two-compartment liquid tank under seismic force are calculated. It could be found that local dynamic effect of reserve tank is directly proportional to nodal acceleration and continuous mass of unit. The local dynamic effect of reserve tank is more obvious than that of other types of structures owing to attached-water. Some useful results are obtained. These are beneficial to engineering design.

引文

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