隔震桥梁地震反应速度控制型实时子结构试验

英文篇名：Real-time substructure hybrid test system for earthquake response of isolated bridge using velocity control
中文刊名：华中科技大学学报(自然科学版)
英文刊名：Journal of Huazhong University of Science and Technology(Nature Science Edition)
作者：袁涌 ; 熊世树 ; 朱宏平
英文作者：Yuan Yong Xiong Shishu Zhu Hongping(College of Civil Engineering and Mechanics ; Hubei Key Laboratory of Control Structure ; Huazhong University of Science and Technology ; Wuhan 430074 ; China)
中文关键词：隔震橡胶支座 ; 实时子结构拟动力试验 ; 速度相关性 ; 高阻尼
英文关键词：rubber bearing isolator ; real-time substructure hybrid loading test ; velocity-dependent ; high-damping
出版日期：2008-08-15
机构：华中科技大学土木工程与力学学院;控制结构湖北省重点试验室;
年：2008
期：08
出版单位：华中科技大学学报(自然科学版)

摘要

研究速度控制型实时子结构拟动力试验系统,并通过试验直接考察在地震中天然橡胶支座(NR)、高阻尼隔震橡胶支座(HDR)和超高阻尼隔震橡胶支座(HDR-S)等速度相关型隔震支座对桥梁的减隔震效果.速度控制型实时子结构拟动力试验系统实现实时子结构试验的速度控制,在试验过程中充分地考虑到加载速度对拟动力试验结果的影响,高精度地模拟了隔震桥梁的地震反应.试验结果证明,对于速度相关型试验试件这种试验系统拥有足够的精度.通过对比3种不同隔震橡胶支座的试验结果,证明了超高阻尼隔震橡胶支座对隔震桥梁结构具有优良的隔震减震效果.
The real-time substructure hybrid test system which based on velocity loading concept was developed to verify the isolation effects of nature rubber(NR),high-damping rubber(HDR) and super-high-damping rubber(HDR-S) bearing isolators in bridge structure.The rubber bearing isolators have velocity-dependent performance,and heavily depend on rate of loading.Compared with 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 was confirmed.Compared with test results of the nature rubber and high-damping rubber bearing,the excellent isolation effect of super-high-damping rubber bearing to the total bridge structural system associated with the characteristics of the input seismic ground motion was also directly confirmed.

引文

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