橡胶隔震支座对桥梁隔震性能的实时子结构拟动力实验研究

英文篇名：Study on the Isolation Effects of Bridge Rubber Isolators through the Developed Real-time Substructure Hybrid Test System
中文刊名：华中科技大学学报(城市科学版)
英文刊名：Journal of Huazhong University of Science and Technology(Urban Science Edition)
作者：袁涌 ; 熊世树 ; 朱昆
英文作者：YUAN Yong a ; b ; XIONG Shi-shu a ; b ; ZHU Kun a ; b(a.School of Civil Engineering and Mechanics ; b.Hubei Key Laboratory of Control Structure ; HUST ; Wuhan 430074 China)
中文关键词：实时子结构拟动力实验 ; 速度相关性 ; 橡胶隔震支座 ; 高阻尼
英文关键词：real-time hybrid loading test ; velocity-dependent ; rubber bearing isolator ; high damping
出版日期：2008-03-15
机构：华中科技大学土木工程与力学学院,华中科技大学土木工程与力学学院,华中科技大学土木工程与力学学院华中科技大学控制结构湖北省重点实验室,湖北武汉430074,华中科技大学控制结构湖北省重点实验室,湖北武汉430074,华中科技大学控制结构湖北省重点实验室,湖北武汉430074
年：2008
期：01
出版单位：华中科技大学学报(城市科学版)

摘要

通过开发的速度控制型实时子结构拟动力实验系统,研究天然橡胶支座(NR)、高阻尼橡胶隔震支座(HDR)和超高阻尼橡胶隔震支座(HDR-S)等速度相关型隔震支座对桥梁的隔震减震效果。基于速度控制的实时子结构拟动力实验系统,通过速度控制实现对橡胶隔震支座的实时拟动力加载,可以在实验过程中充分考虑到隔震支座的速度相关性对实验结果的影响,精确地模拟地震中隔震桥梁结构的地震反应。实验结果证明此系统对速度相关型隔震支座有足够的实验精度。通过对比3种不同性能的隔震橡胶支座的实验结果,验证了在不同地震条件下超高阻尼橡胶隔震支座对桥梁结构的隔震优越性。
The real-time substructure hybrid test system which based on the velocity loading concept was developed to verify the isolation effects of nature rubber,high-damping rubber and super-high-damping rubber bearing isolators in bridge structure.The rubber bearing isolators have velocity-dependent performance,and heavily depend on the rate of loading.Compared with the conventional test system,the developed test system considered the velocity-dependent performance of specimens,and controlled the tests procedure with velocity concept.Basing on the test results,the test system accuracy is confirmed.Compared with the test results of the nature rubber and high-damping rubber bearing,the best isolation effect of super-high-damping rubber bearing to the total bridge structural associated with the characteristics of the input seismic ground motion is also directly confirmed.

引文

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