水下公路隧道结构地震响应分析
|
摘要
为了研究水下公路隧道在水平地震动和竖直地震动作用下结构的安全可靠性,采用快速拉格朗日时域有限差分法进行时程分析,并利用大型岩土软件FLAC3D对某浅埋软土地基水下公路隧道进行数值模拟计算。结果表明:双向地震荷载作用下,隧道结构水平残余位移为15.0mm,竖直残余位移为31.0mm,隧道结构顶板和底板之间的水平相对位移、竖直相对位移较小;隧道结构整体应力、内力变化较小,应力幅度最大波动5%;结构自振频率为约0.65Hz。总体上,隧道结构产生剪切、拉伸破坏和共振的概率较小,隧道结构抗震性能较好,结构安全可靠。这些认识可为同类隧道的设计提供参考。
In order to research the safety reliability of underwatertunnel subjected to the horizontal and vertical earthquake,Fast Lagrangian Analysis of Continua was used for seismic time history analysis and the large-scale geotechnical software FLAC3D was adopted for a shallow soft clay ground underwatertunnel's numerical calculation.The results indicate that the tunnel residual horizontal displacement is 15.0 mm,and vertical displacement is 31.0 mm,but it generates small relative horizontal and vertical displacement;the whole stress and internal force change a little,and the maximum stress amplitude is 5% ;and the natural frequency of tunnel is 0.65 Hz.Overall,the probability of shear,tensile and resonance failure of tunnel is small,and it is safty and reliability.This conclusion can be used for the design of the same type of tunnel.
In order to research the safety reliability of underwatertunnel subjected to the horizontal and vertical earthquake,Fast Lagrangian Analysis of Continua was used for seismic time history analysis and the large-scale geotechnical software FLAC3D was adopted for a shallow soft clay ground underwatertunnel's numerical calculation.The results indicate that the tunnel residual horizontal displacement is 15.0 mm,and vertical displacement is 31.0 mm,but it generates small relative horizontal and vertical displacement;the whole stress and internal force change a little,and the maximum stress amplitude is 5% ;and the natural frequency of tunnel is 0.65 Hz.Overall,the probability of shear,tensile and resonance failure of tunnel is small,and it is safty and reliability.This conclusion can be used for the design of the same type of tunnel.
引文
[1]国胜兵,赵毅,赵跃堂,等.地下结构在竖向和水平地震荷载作用下的动力分析[J].地下空间,2002,22(4):314-319.(Guo Shengbing,Zhao Yi,Zhao Yuetang,et al.The dynamical analysis of underground structure subjected to horizontal and vertical seism[J].Underground Space,2002,22(4):314-319.(in Chinese))
[2]国胜兵,王明洋,赵跃堂,等.爆炸地震波作用下地下结构动力响应数值分析[J].世界地震工程,2004,20(4):137-143.(Guo Shengbing,Wang Mingyang,Zhao Yuetang,et al.Dynamic numerical analysis of underground structures under action of explosion seismic wave[J].World Earthquake Engineering,2002,22(4):314-319.(in Chinese))
[3]王国波,杨林德,马险峰,等.地铁车站结构三维地震响应及土非线性分析[J].地下空问与工程学报,2008,4(2):234-237.(Wang Guobo,Yang Linde,Ma Xianfeng,et al.Analysis of three-dimensional seismie response of subway station structure and non-linear characteristic of soil[J].Chinese Journal of Underground Space and Engineering,2008,4(2):234-237.(in Chinese))
[4]唐益群,栾长青,张曦,等.地铁振动荷载作用下隧道土体变形数值模拟[J].地下空间与工程学报,2008,4(1):105-110.(Tang Yiqun,Luan Changqing,Zhang Xi,et al.Numerical simulation of saturated soft clay’s deformation around tunnel under subway vibrational loading[J].Chinese Journal of Underground Space and Engineering,2008,4(1):105-110.(in Chinese))
[5]李建波,陈健云,李静,等.软土浅埋地铁车站地震响应的多因素影响分析[J].地下空间与工程学报,2009,5(2):395-401,405.(Li Jianbo,Chen Jianyun,Li Jing,et al.Multi-factor Influencing Analysis on the seismic responses of subway station[J].Chinese Journal of Underground Space and Engineering,2009,5(2):395-401,405.(in Chinese))
[6]中华人民共和国交通部.公路隧道设计规范[S].北京:人民交通出版社,2004.(The Ministry of Communications of the People’s Republic of China.Code for design of road tunnel[S].Beijing:China Communications Press,2004.(in Chinese))
[7]中华人民共和国交通部.公路工程抗震设计规范[S].北京:人民交通出版社,1989.(The Ministry of Communications of the People’s Republic of China.Specifications of earthquake resistant design for highway engineering[S].Beijing:China Communications Press,1989.(in Chinese))
[8]张友峰,袁海平.FLAC3D在地震边坡稳定性分析中的应用[J].江西理工大学学报,2008,29(5):23-26.(Zhang Youfeng,Yuan Haiping.The application of FLAC3D to the analysis of slope stability in earthquake[J].Journalof Jiangxi University Of Science And Technology,2008,29(5):23-26.(in Chinese))
[9]彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2008.(Peng Wenbing.The practical course of FLAC3D[M].Beijing:China Machine Press,2008.(in Chinese))
[10]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008.(Chen Yumin Xu Dingping.The basis and project cases of FLAC/FLAC3D[M].Beijing:China Waterpower Press,2008.(in Chinese))
[11]Itasca Consulting Group Inc.Fast Language Analysis of Continua in3Dimensions User’s Manual[M/OL].4th ed.Minneapolis:Itasca Consulting Group Inc,2009[2010-03-03].http://www.itascacg.com/flac3d/updates.php#.
[2]国胜兵,王明洋,赵跃堂,等.爆炸地震波作用下地下结构动力响应数值分析[J].世界地震工程,2004,20(4):137-143.(Guo Shengbing,Wang Mingyang,Zhao Yuetang,et al.Dynamic numerical analysis of underground structures under action of explosion seismic wave[J].World Earthquake Engineering,2002,22(4):314-319.(in Chinese))
[3]王国波,杨林德,马险峰,等.地铁车站结构三维地震响应及土非线性分析[J].地下空问与工程学报,2008,4(2):234-237.(Wang Guobo,Yang Linde,Ma Xianfeng,et al.Analysis of three-dimensional seismie response of subway station structure and non-linear characteristic of soil[J].Chinese Journal of Underground Space and Engineering,2008,4(2):234-237.(in Chinese))
[4]唐益群,栾长青,张曦,等.地铁振动荷载作用下隧道土体变形数值模拟[J].地下空间与工程学报,2008,4(1):105-110.(Tang Yiqun,Luan Changqing,Zhang Xi,et al.Numerical simulation of saturated soft clay’s deformation around tunnel under subway vibrational loading[J].Chinese Journal of Underground Space and Engineering,2008,4(1):105-110.(in Chinese))
[5]李建波,陈健云,李静,等.软土浅埋地铁车站地震响应的多因素影响分析[J].地下空间与工程学报,2009,5(2):395-401,405.(Li Jianbo,Chen Jianyun,Li Jing,et al.Multi-factor Influencing Analysis on the seismic responses of subway station[J].Chinese Journal of Underground Space and Engineering,2009,5(2):395-401,405.(in Chinese))
[6]中华人民共和国交通部.公路隧道设计规范[S].北京:人民交通出版社,2004.(The Ministry of Communications of the People’s Republic of China.Code for design of road tunnel[S].Beijing:China Communications Press,2004.(in Chinese))
[7]中华人民共和国交通部.公路工程抗震设计规范[S].北京:人民交通出版社,1989.(The Ministry of Communications of the People’s Republic of China.Specifications of earthquake resistant design for highway engineering[S].Beijing:China Communications Press,1989.(in Chinese))
[8]张友峰,袁海平.FLAC3D在地震边坡稳定性分析中的应用[J].江西理工大学学报,2008,29(5):23-26.(Zhang Youfeng,Yuan Haiping.The application of FLAC3D to the analysis of slope stability in earthquake[J].Journalof Jiangxi University Of Science And Technology,2008,29(5):23-26.(in Chinese))
[9]彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2008.(Peng Wenbing.The practical course of FLAC3D[M].Beijing:China Machine Press,2008.(in Chinese))
[10]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008.(Chen Yumin Xu Dingping.The basis and project cases of FLAC/FLAC3D[M].Beijing:China Waterpower Press,2008.(in Chinese))
[11]Itasca Consulting Group Inc.Fast Language Analysis of Continua in3Dimensions User’s Manual[M/OL].4th ed.Minneapolis:Itasca Consulting Group Inc,2009[2010-03-03].http://www.itascacg.com/flac3d/updates.php#.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心