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设置黏滞阻尼器的纵飘斜拉桥地震响应简化分析方法

史俊 徐略勤 鲁小罗

史俊, 徐略勤, 鲁小罗. 设置黏滞阻尼器的纵飘斜拉桥地震响应简化分析方法[J]. 应用数学和力学, 2019, 40(12): 1335-1344. doi: 10.21656/1000-0887.400045
引用本文: 史俊, 徐略勤, 鲁小罗. 设置黏滞阻尼器的纵飘斜拉桥地震响应简化分析方法[J]. 应用数学和力学, 2019, 40(12): 1335-1344. doi: 10.21656/1000-0887.400045
SHI Jun, XU Lueqin, LU Xiaoluo. A Simplified Analysis Method for Seismic Responses of Floating-System Cable-stayed Bridges With Viscous Dampers[J]. Applied Mathematics and Mechanics, 2019, 40(12): 1335-1344. doi: 10.21656/1000-0887.400045
Citation: SHI Jun, XU Lueqin, LU Xiaoluo. A Simplified Analysis Method for Seismic Responses of Floating-System Cable-stayed Bridges With Viscous Dampers[J]. Applied Mathematics and Mechanics, 2019, 40(12): 1335-1344. doi: 10.21656/1000-0887.400045

设置黏滞阻尼器的纵飘斜拉桥地震响应简化分析方法

doi: 10.21656/1000-0887.400045
基金项目: 国家重点研发计划(重点专项子课题)(2016YFC0802206-3);重庆市人工智能技术创新重大主题专项重点研发项目(cstc2017rgzn-zdyfX0029);重庆市技术创新与应用示范(社会民生类重点研发)项目(cstc2018jscx-mszdX0084);重庆市研究生科研创新项目(CYS19244)
详细信息
    作者简介:

    史俊(1994—),男,硕士生(E-mail: shijuncqjtu@163.com);徐略勤(1983—),男,副教授,博士,博士生导师(通讯作者. E-mail: xulueqin@163.com).

  • 中图分类号: U442.5+5

A Simplified Analysis Method for Seismic Responses of Floating-System Cable-stayed Bridges With Viscous Dampers

Funds: The National Key R&D Program of China(2016YFC0802206-3)
  • 摘要: 针对纵飘体系斜拉桥现有黏滞阻尼器参数设计方法的不足,提出了更为快捷有效的分析方法.首先基于钟摆原理,采用双质点模型简化模拟纵飘斜拉桥的动力响应特征;然后基于能量耗散等效原理,提出了黏滞阻尼器的等效线性模型;最后基于结构动力学原理,建立了设置黏滞阻尼器的纵飘斜拉桥地震响应简化分析方法.在此基础上,针对某主跨392 m的纵飘斜拉桥建立了全桥分析模型,在正弦波作用下,对比分析了全桥模型、双质点简化模型数值解和解析解的计算误差.结果表明:双质点模型数值解计算结果精度较高,可以代替全桥模型的有限元计算结果;解析解与双质点数值解计算结果吻合良好,验证了双质点模型简化分析方法在理论上的可靠性;在不同地震动特性和体系周期下,三者计算误差均满足工程精度要求,表明该简化分析方法具有良好的适用性,可为阻尼器参数优化提供更简便的模型.
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出版历程
  • 收稿日期:  2019-01-20
  • 刊出日期:  2019-12-01

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