Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated frame structures
作者机构：Key Laboratory of Earthquake Engineering and Engineering VibrationInstitute of Engineering MechanicsChina Earthquake AdministrationHarbin 150080China Key Laboratory of Earthquake Disaster Mitigation(Ministry of Emergency Management)Harbin 150080China School of Civil EngineeringTianjin UniversityTianjin 300072China
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2023年第17卷第3期
页 面：350-367页
核心收录：
学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 0814[工学-土木工程]
基 金：This study was sponsored by the Scientific Research Fund of the Institute of Engineering Mechanics,China Earthquake Administration(No.2019EEEVL0302) the Open Fund of State Key Laboratory of Disaster Reduction in Civil Engineering(No.SLDRCE18-03) the National Natural Science Foundation of China(Grant No.51978463).
主 题：three-dimensional isolation rocking behavior rocking constraint device replaceable damping component sinusoidal test
摘 要：A new rocking constraint device(RCD)is developed for three-dimensional(3D)base-isolated frame structures by connecting a custom-designed cylinder pair to provide vertical damping with replaceable damping components installed outside the cylinders when the superstructure undergoes translational motion,and rocking constraint capacity when the superstructure is susceptible to rocking.Theoretical formulas for calculating the damping and rocking constraint stiffness of the RCD are proposed.Two series of sinusoidal loading tests are conducted at different loading frequencies and amplitudes to verify the damping and rocking constraint performance of the RCD.The test results show that the cylinder without orifices on its piston can provide the desired damping with a replaceable damping component,and that the RCD can effectively suppress rocking.Although the vertical stiffness of an individual cylinder is affected by the location of the replaceable damping component and loading frequency,the average vertical stiffness of the two cylinders,which determines the rocking constraint stiffness of the RCD,is independent of the two factors.Comparisons of the test and theoretical results indicate that the errors of the proposed formulas for calculating the damping and rocking constraint stiffness of the RCD do not exceed 12.9%and 11.0%,respectively.
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