Seismic performance evaluation of VCFPB isolated storage tank using real-time hybrid simulation  

作　　者：Hong Yue Tang Zhenyun Li Zhenbao Du Xiuli 

机构地区：[1]The Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology,Beijing 100124,China [2]Daxing District Commission of Housing and Urban-Rural Development,Beijing 102600,China

出　　处：《Earthquake Engineering and Engineering Vibration》2022年第2期501-515,共15页地震工程与工程振动（英文刊）

基　　金：Scientific Research Fund of Institute of Engineering Mechanics,China Earthquake Administration under Grant No.2018D03;the National Natural Science Foundation of China under Grant Nos.51608016 and 51421005。

摘　　要：Variable curvature friction pendulum bearings(VCFPB)effectively reduce the dynamic response of storage tanks induced by earthquakes.Shaking table testing is used to assess the seismic performance of VCFPB isolated storage tanks.However,the vertical pressure and friction coefficient of the scaled VCFPB in the shaking table tests cannot match the equivalent values of these parameters in the prototype.To avoid this drawback,a real-time hybrid simulation(RTHS)test was developed.Using RTHS testing,a 1/8 scaled tank isolated by VCFPB was tested.The experimental results showed that the displacement dynamic magnification factor of VCFPB,peak reduction factors of the acceleration,shear force,and overturning moment at bottom of the tank,were negative exponential functions of the ratio of peak ground acceleration(PGA)and friction coefficient.The peak reduction factors of displacement,acceleration,force and overturning moment,which were obtained from the experimental results,are compared with those calculated by the Housner model.It can be concluded that the Housner model is applicable in estimation of the acceleration,shear force,and overturning moment of liquid storage tank,but not for the sliding displacement of VCFPBs.

关 键 词：liquid storage tank base isolation variable curvature friction pendulum bearing seismic performance real-time hybrid simulation test 

分 类 号：TU352.11[建筑科学—结构工程]