| 大跨度斜拉桥抗震性能分析与减震控制研究 |
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| 引用本文： | 肖开乾,徐怀兵,刘敏,徐振清.大跨度斜拉桥抗震性能分析与减震控制研究[J].自然灾害学报,2020(1):57-63. |
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| 作者姓名： | 肖开乾 徐怀兵 刘敏 徐振清 |
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| 作者单位： | 武汉市市政建设集团有限公司;北京科技大学土木与资源工程学院;哈尔滨工业大学土木工程学院;智性科技南通有限公司 |
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| 基金项目： | 国家自然科学基金面上项目(51678198);十三五重点研发计划(2016YFC0701102);湖北省交通运输科技项目计划(2016600207)~~ |
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| 摘 要： | 本文以香溪河大桥为工程背景,利用大型有限元软件ANSYS建立该斜拉桥的有限元模型,进行地震作用下的动力非线性时程分析,并以COMBIN37单元模拟非线性粘滞阻尼器,研究了粘滞阻尼器参数对桥梁抗震性能的影响规律,并确定了合理的阻尼器参数取值。并对未设置与设置粘滞阻尼器的桥梁结构地震响应进行数值分析与比较,分析结果表明:合理设置粘滞阻尼器,可以有效降低桥梁结构关键部位在地震作用下的位移响应,并对结构内力也有一定的降低。本文研究结果为大跨度斜拉桥振动控制分析及工程应用具有重要的指导意义。
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| 关 键 词： | 大跨度斜拉桥 有限元模型 非线性时程分析 粘滞阻尼器 地震响应 抗震性能 |
Seismic performance analysis and vibration control study of one cable-stayed bridge |
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| XIAO Kaiqian,XU Huaibing,LIU Min,XU Zhenqing.Seismic performance analysis and vibration control study of one cable-stayed bridge[J].Journal of Natural Disasters,2020(1):57-63. |
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| Authors: | XIAO Kaiqian XU Huaibing LIU Min XU Zhenqing |
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| Institution: | (Wuhan Municipal Construction Group Co.,Ltd.,Wuhan 430056,China;School of Civil and Resource Engineering,University of Science&Technology Beijing,Beijing 100083,China;School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Zhixing Science and Technology Nantong Co.,Ltd.,Nantong 226010,China) |
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| Abstract: | Based on the Xiangxi river bridge,the finite element model of the bridge is established by using the finite element software ANSYS,and the nonlinear dynamic performance is performed on the basis of the time-history analysis.The nonlinear viscous damper is simulated with the COMBIN37 element to study the effect of the damper on the seismic performance of the bridge.The influence of damper parameters on the structural response is discussed,and reasonable parameters are determined.Comparing the dynamic responses of the bridge without the viscous dampers and those with the installation of the viscous dampers,the analysis results show that the reasonable installation of the viscous dampers can effectively reduce the displacement response of the key parts of the structure under the earthquake excitation and also improve the internal forces of the structure. |
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| Keywords: | cable-stayed bridge with long-span finite element model nonlinear time history analysis viscous damper response subjected to earthquake seismic performance |
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