核电结构PCS水箱液动压力分析等效模型

发布时间：2018-01-29 06:08

  本文关键词： PCS水箱 Housner模型 液动压力 等效质量-弹簧模型　出处：《地震工程学报》2017年05期 　论文类型：期刊论文

【摘要】：中国核电厂抗震设计规范推荐采用的Housner模型不适用于复杂形状核电储液结构的流固耦合分析。对于AP1000和CAP1400核电站屏蔽厂房顶部非能动安全壳冷却系统重力水箱(简称PCS水箱),基于圆柱形水箱的Housner等效质量-弹簧模型,通过引入水箱体积修正参数,提出PCS水箱的三维等效质量-弹簧模型。采用有限元软件ADINA建立水箱结构流固耦合整体有限元模型以进行模态分析,计算分析PCS水箱和对应环形水箱在不同尺寸和液体深度条件下的液体晃动自振特性。对比整体有限元模型与三维等效质量-弹簧模型计算结果发现,提出的PCS水箱三维等效质量-弹簧模型能给出其内液体晃动各阶振型的液动压力合理估计值,适用于具有复杂形状的PCS水箱液动压力分析。本文的等效模型方法可推广应用于其他复杂形状水箱的液动压力分析。
[Abstract]:The Housner model recommended in the code for seismic design of nuclear power plants in China is not suitable for fluid-solid coupling analysis of nuclear power storage structures with complex shapes. For shielding buildings of AP1000 and CAP1400 nuclear power plants. Top passive containment cooling system gravity tank (. PCS water tank for short. Based on the Housner equivalent mass-spring model of cylindrical water tank, the parameters are modified by introducing the volume of water tank. Three-dimensional equivalent mass-spring model of PCS water tank is presented. The fluid-solid coupling integral finite element model of water tank structure is established by using finite element software ADINA to carry out modal analysis. The natural vibration characteristics of liquid sloshing in PCS water tank and corresponding annular water tank under different sizes and liquid depths are calculated and analyzed, and the results are compared between the global finite element model and the three-dimensional equivalent mass-spring model. The three-dimension equivalent mass-spring model of the PCS tank can give reasonable estimates of the hydrodynamic pressure of the liquid sloshing modes in the tank. The equivalent model method in this paper can be extended to the hydrodynamic pressure analysis of other water tanks with complex shapes.
【作者单位】： 北京工业大学建筑工程学院;中国地震局地球物理研究所;
【基金】：国家自然科学基金资助项目(51421005,51408255) 国家科技重大专项资助项目(2013ZX06002001)
【分类号】：TM623
【正文快照】： 0引言以浙江三门和山东海阳的核电站为依托,我国积极推进第三代AP1000型核电站的国产化,以CAP1400型先进压水堆为代表的自主设计核电项目也处于研究攻关时期。CAP1400型压水堆核电机组是具有我国自主知识产权的装机容量为140万kW级的非能动大型先进压水堆核电机组。该核电项目，

本文编号：1472741