双层储罐结构的地震局部动力效应研究  

STUDY ON LOCAL DYNAMIC EFFECT OF TWO-COMPARTMENT LIQUID TANK UNDER SEISMIC FORCE

作　　者：曲淑英[1] 曲乃泗[2] 杨春秋[2] 

机构地区：[1]烟台大学土木工程系,烟台264005 [2]大连理工大学工程力学系,大连116023

出　　处：《机械强度》2002年第3期455-457,共3页Journal of Mechanical Strength

基　　金：国家自然科学基金 (1 0 1 4 2 0 0 1 );山东省自然科学基金 (Y2 0 0 0F0 1 )资助项目~~

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。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.

关 键 词：地震作用 局部动力效应 双层储罐结构 质量惯性力 

分 类 号：TH113[机械工程—机械设计及理论] O317[理学—一般力学与力学基础]