近断层脉冲型地震动作用下黏滞阻尼器和双调谐质量阻尼器对曲线高墩刚构桥减震控制  

Control Law of Seismic Reduction of Curved High Pier Rigid Frame Bridge Based on Viscous Damper and Double Tuned Mass Damper

作　　者：肖波 郑永瑞 王洪国 许维炳[1] 陈彦江[1] 王少剑 XIAO Bo;ZHENG Yong-rui;WANG Hong-guo;XU Wei-bing;CHEN Yan-jiang;WANG Shao-jian(Beijing Key Laboratory of Earthquake Resistant and Structural Diagnosis, Beijing University of Technology, Beijing 100124, China;Changchun Municipal Engineering Design and Research Institute, Changchun 130012, China;Shandong Expressway Linzao-Zaomu Highway Co., Ltd., Zaozhuang 277100, China)

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点实验室,北京100124 [2]长春市市政工程设计研究院,长春130012 [3]山东高速临枣至枣木公路有限公司,枣庄277100

出　　处：《科学技术与工程》2021年第25期10931-10939,共9页Science Technology and Engineering

基　　金：国家自然科学基金青年科学基金(51908015,51978021);国家重点研发计划(2017YFC1500604);北京工业大学基础研究基金(004000546318524);北京市教委科技计划(KM201910005020)。

摘　　要：为研究黏滞阻尼器(viscous damper,VD)和双调谐质量阻尼器(double tuned mass damper,DTMD)对曲线高墩刚构桥的减震控制效果,基于OpenSees建立某曲线高墩刚构桥的非线性分析模型,选取三条近断层脉冲型地震动对其进行动力时程分析。分别探究了VD的阻尼系数和阻尼指数,以及DTMD的上下层结构的阻尼比、质量比、频率比等阻尼器参数对其在曲线高墩刚构桥中的减震效果影响规律。结果表明:在分析的阻尼系数、阻尼指数变化范围内,VD对曲线高墩刚构桥墩顶位移减震率在9.42%~15.28%范围内,近断层脉冲型地震动作用下黏滞阻尼器对曲线高墩刚构桥的减震效果不佳。设计较优的DTMD控制下曲线高墩刚构桥的结构内力减震效果在45%左右,结构位移加速度在55%~75%范围内,DTMD可用于曲线高墩刚构桥减震控制中。In order to study the effect of viscous damper(VD)and double tuned mass damper(DTMD)on the seismic control of curved high-pier rigid frame bridges,a nonlinear analysis model of a curved high-pier rigid frame bridge was established based on OpenSees.The fault pulse-type ground motion was used to analyze its dynamic time history.The damping coefficient and damping index of VD,as well as the damping ratio,mass ratio,frequency ratio and other damper parameters of the upper and lower structures of DTMD were investigated on the effect of the damping effect on the curved high-pier rigid frame bridge.The results show that within the analysis of the variation range of the damping coefficient and damping index,the damping rate of VD on the displacement of the top of the curved high-pier rigid frame bridge is in the range of 9.42%~15.28%.Under impulsive ground motion near fault,the effect of the shock absorber on the curved high-pier rigid frame bridge is not good.Under the control of the better designed DTMD,the internal vibration damping effect of the curved high-pier rigid frame bridge is about 45%,and the structural displacement acceleration is in the range of 55%~75%.DTMD can be used in the seismic control of the curved high-pier rigid frame bridge.

关 键 词：曲线刚构桥 减震控制 时程分析 双调谐质量阻尼器(DTMD) 

分 类 号：U441[建筑科学—桥梁与隧道工程]