Housner模型在隔震储罐计算中的适用性研究  

Applicability of Housner model in storage tank isolated by FPB

作　　者：洪越 唐贞云[1] 李振宝[1] HONG Yue;TANG Zhenyun;LI Zhenbao(The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《世界地震工程》2020年第4期1-7,共7页World Earthquake Engineering

基　　金：国家自然科学基金项目(51978016)。

摘　　要：隔震储罐的抗震性能分析中,底部剪力和隔振层位移是两个重要指标。Housner模型是储罐抗震设计中常用的液体简化模型,其在计算储罐底部剪力时有良好的准确性,并被广泛验证,但是对于隔振层变形的计算效果鲜有研究。运用实时子结构试验方法,对四条地震激励下的不同摩擦系数的摩擦摆隔震储罐进行了试验研究,并通过Housner模型代替试验储罐对各个工况进行了仿真。分析结果表明:地震荷载作用下,Housner模型用于储罐底部剪力计算时准确性较高,与实验结果相比平均误差仅为11%。但是在隔振层滑移位移的计算中与实验结果差距较大,平均误差为22%,最大误差超过30%。In the seismic performance analysis of the isolated tank,the shear force and the displacement of the isolator are two important indexes.Housner model is a commonly used simplified liquid model in the seismic design of tank.It has good accuracy in calculating the shear force and has been widely verified.In this paper,the real-time hybrid simulation method is used to study the tank isolated by friction pendulum bearing(FPB)with different friction coefficients under four seismic excitations.And the Housner model is used to replace the test tank to simulate each case.The results show that the Housner model is accurate in the calculation of shear force,and the average error is only 11%compared with the experimental results.However,in the calculation of the sliding displacement of FPB,there is a big gap with the experimental results.The average error is 22%,and the maximum error is more than 30%.

关 键 词：Housner模型 摩擦摆 隔震 储罐 子结构试验 

分 类 号：TU317[建筑科学—结构工程]