原子能科学技术2013，Vol.47Issue(6)：947-951,5.DOI:10.7538/yzk.2013.47.06.0947
质量-弹簧模型在储液容器抗震分析中的应用
Application of Mass-spring Model in Seismic Analysis of Liquid Storage Tank
摘要
Abstract
There are many tanks for storing liquid in nuclear power plant.When seismic analysis is performed,swaying of liquid may change the mechanical parameters of those tanks,such as the center of mass and the moment of inertia,etc.,so the load due to swaying of liquid can't be neglected.Mass-spring model is a simplified model to calculate the dynamic pressure of liquid in tank under earthquake,which is derived by the theory of Housner and given in the specification of seismic analysis of Safety-Related Nuclear Structures and Commentary-4-98 (ASCE-4-98 for short hereinafter).According to the theory of Housner and ASCE-4-98,the mass-spring 3-D FEM model for storage tank and liquid in it was established,by which the force of stored liquid acted on liquid storage tank in nuclear power plant under horizontal seismic load was calculated.The calculated frequency of liquid swaying and effect of liquid convection on storagetank were compared with those calculated by simplified formula.It is shown that the results of 3-D FEM model are reasonable and reliable.Further more,it is more direct and convenient compared with description in ASCE-4-98 when the mass-spring model is applied to 3-D FEM model for seismic analysis,from which the displacement and stress distributions of the plate-shell elements or the 3-D solid finite elements can be obtained directly from the seismic input model.关键词
质量-弹簧模型/储液容器/三维/抗震分析Key words
mass-spring model/ liquid storage tank/ 3-D/ seismic analysis分类
能源科技引用本文复制引用
刘嘉一,白欣然,李晓轩..质量-弹簧模型在储液容器抗震分析中的应用[J].原子能科学技术,2013,47(6):947-951,5.基金项目
国家科技重大专项资助项目(2011ZX06004-004) （2011ZX06004-004）
