基于FSI效应AP1000屏蔽厂房重力水箱的模态分析

第44卷第1期2019年2月　广西大学学报(自然科学版)Journal of Guangxi University(Nat Sci Ed)Vol.44No.1Feb.2019 收稿日期:2018?11?08;修订日期:2019?01?09 基金项目:国家自然科学基金面上项目(51778394)

通讯作者:田石柱(1962 ),男,河北黄骅人,苏州科技大学教授,工学博士,博士生导师;E?mail:tianshizhu@mail.

https://www.360docs.net/doc/7615645755.html,三 引文格式:张程,田石柱.基于FSI 效应AP1000屏蔽厂房重力水箱的模态分析[J].广西大学学报(自然科学版),2019,44(1):33?40.doi:10.13624/https://www.360docs.net/doc/7615645755.html,ki.issn.1001?7445.2019.0033基于FSI 效应AP1000屏蔽厂房

重力水箱的模态分析

张程1,田石柱*1,2

(1.苏州科技大学土木工程学院,江苏苏州215011;2.江苏省结构工程重点实验室,江苏苏州215011)

摘要:为了研究AP1000屏蔽厂房PCS 重力水箱中考虑水体与结构相互作用时水箱结构固有特性,基于液固耦合理论分析方法,首先针对重力水箱特殊的结构形式分别建立不同水位高度下的理论分析模型和FEM 数值模型,对比分析不同方法同水位高度下PCS 重力水箱中水的晃动频率的差异性,然后对不同水位高度下水箱中水体的晃动模态进行分析,最后对水箱耦合系统结构振动模态变化进行探究三研究结果得出:等效圆柱水箱和等效环形水箱计算得到的晃动频率相差不大,且FEM 法得到的水的晃动频率比理论方法小;水晃动频率随着水位升高而增大,结构的振动频率则相反三

关键词:PCS 重力水箱;液固耦合(FSI);模态;晃动频率

中图分类号:TU352.1+1 文献标识码:A 文章编号:1001?7445(2019)01?0033?08

Modal analysis of gravity water tank for AP1000shielded building based on FSI effect

ZHANG Cheng 1,TIAN Shi?zhu *1,2

(1.School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China;2.Jiangsu Key Laboratory of Structure Engineering,Suzhou 215011,China)Abstract :To study the inherent characteristics of the tank structure in the PCS gravity water tank of AP1000shielded building,with the interaction between water and structure,theoretical analysis model and FEM numerical model at different water level heights are established based on the theoretical analysis method of fluid structure https://www.360docs.net/doc/7615645755.html,paring the difference of shaking frequency of water in PCS gravity water tank in the same water level with different methods,then the sloshing mode of water in the water tank under different water levels is analyzed.Finally,the vibration modal of tank coupled system are studied.The results show that the sloshing frequencies that calculated by the equivalent cylindrical tank and the equivalent annular tank are much the same,and the water sloshing frequency which obtained by the FEM method is smaller than the