公路盾构隧道地震响应的反应位移法分析
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摘要
以某越江公路盾构隧道为工程背景,在利用成层反射理论分析场地地震波特性的基础上,采用反应位移法研究了公路盾构隧道的动力响应特性,其中:盾构隧道衬砌结构环向和纵向接头采用弹性铰模拟,天然地层作用在隧道结构上的剪切力和强制位移由成层反射理论动力分析程序DYNEQ获得。研究表明:由剪切力和强制位移引起的地震附加内力规律基本相当;地震作用下,衬砌结构最大变形部位和最大内力出现位置相对常时状态都发生了显著变化。计算结果可供类似工程参考。
Under the precondition of analyzing seismic wave characteristics by taking advantage of layered reflection theory,based on a cross-river highway shield tunnel,the corresponding dynamic properties of highway shield tunnel were studied by using response displacement method.The cylindrical and longitudinal bolts of the lining were simulated by using elastic hinges,and shear force and compulsory displacement of the tunnel structure in natural ground were obtained by dynamic analysis program DYNEQ using layered reflection theory.The results show that(1) the regularities of secondary lining internal forces caused by shear force and compulsory displacements agree well;(2) the positions of the maximum deformation and the maximum internal force in earthquake have significant changes relative to usual.The results can offer a reference to similar projects.
Under the precondition of analyzing seismic wave characteristics by taking advantage of layered reflection theory,based on a cross-river highway shield tunnel,the corresponding dynamic properties of highway shield tunnel were studied by using response displacement method.The cylindrical and longitudinal bolts of the lining were simulated by using elastic hinges,and shear force and compulsory displacement of the tunnel structure in natural ground were obtained by dynamic analysis program DYNEQ using layered reflection theory.The results show that(1) the regularities of secondary lining internal forces caused by shear force and compulsory displacements agree well;(2) the positions of the maximum deformation and the maximum internal force in earthquake have significant changes relative to usual.The results can offer a reference to similar projects.
引文
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[9]边金,陶连金,张印涛,等.地下结构抗震设计方法的比较与分析[J].现代隧道技术,2008,45(6):50-54.BIAN Jin,TAO Lianjin,ZHANG Yintao,et al.Comparison and Analysis of the Aseismic Design Methodsfor Underground Structures[J].Modern TunnellingTechnology,2008,45(6):50-54.
[10]HE Chuan,KOIZUMI A.Study on Seismic Behavior andSeismic Design Methods in Transverse Direction of ShieldTunnels[J].Structural Engineering and Mechanics,2001,11(6):651-662.
[2]晏启祥,马婷婷,何川,等.盾构隧道抗震分析近似解析解及其应用[J].西南交通大学学报,2010,45(3):341-345.YAN Qixiang,MA Tingting,HE Chuan,et al.Approximate Analytical Solution of Aseismic Analysis ofShield Tunnel and Its Application[J].Journal ofSouthwest Jiaotong University,2010,45(3):341-345.
[3]林皋.地下结构抗震分析综述:下[J].世界地震工程,1990,5(3):1-10.LIN Gao.Summary of Seismic Analysis of UndergroundStructures(II)[J].World Earthquake Engineering,1990,5(3):1-10.
[4]于翔,陈启亮,赵跃堂,等.地下结构抗震研究方法及其现状[J].解放军理工大学学报,2000,1(5):63-69.YU Xiang,CHEN Qiliang,ZHAO Yuetang,et al.TheStatus Quo and Methods of Antiseismic Research ofUnderground Structure[J].Journal of PLA University ofScience and Technology,2000,1(5):63-69.
[5]刘晶波,王文晖,赵冬冬.地下结构横截面抗震设计分析方法综述[J].施工技术,2010,39(6)91-95.LIU Jingbo,WANG Wenhui,ZHAO Dongdong.Review ofMethods for Seismic Design and Analysis of UndergroundStructure Cross-section[J].Construction Technology,2010,39(6):91-95.
[6]铁科院西南分院.以反应位移法为基础的盾构隧道地震内力计算法[J].隧道译丛,1991(4):42-52.Southwest Branch College of China Academy of Railway.Seismic Internal Force Calculation of Shield Tunnel Basedon the Response Displacement Method[J].Journal ofTunnel Translations,1991(4):42-52.
[7]川岛一彦.地下构筑物の耐震设计[M].日本:鹿岛出版会,1994.KAZUHIKO K.Seismic Design of Underground Structures[M].Japan:Kashima Publishing Company,1994.
[8]黄先锋.地下结构的抗震计算-位移响应法[J].铁道建筑,1999(6):3-6.HUANG Xianfeng.Aseismic Calculation of UndergroundStructures:Response Displacement Method[J].RailwayEngineering,1999(6):3-6.
[9]边金,陶连金,张印涛,等.地下结构抗震设计方法的比较与分析[J].现代隧道技术,2008,45(6):50-54.BIAN Jin,TAO Lianjin,ZHANG Yintao,et al.Comparison and Analysis of the Aseismic Design Methodsfor Underground Structures[J].Modern TunnellingTechnology,2008,45(6):50-54.
[10]HE Chuan,KOIZUMI A.Study on Seismic Behavior andSeismic Design Methods in Transverse Direction of ShieldTunnels[J].Structural Engineering and Mechanics,2001,11(6):651-662.
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