SH波作用下山岭隧道洞口段结构动力响应研究
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摘要
基于弹性波动理论,将山岭隧道洞口段简化为单面边坡模型,考虑波在洞口边坡的反射效应,推导垂直入射SH波作用下隧道轴线上的位移场分布,并将隧道简化为三维薄壁壳结构,以得到在该位移场作用下隧道结构的动力响应。针对上述分析结果开展山岭隧道洞口段振动台模型试验,以验证理论模型的合理性,并综合分析得到如下结论:将隧道结构动力响应看作横截面与纵向响应的叠加,隧道结构横截面发生剪切变形,两侧拱肩与拱脚为抗震的薄弱环节,变形效应沿轴向缓慢增加,此响应为平行隧道结构横截面传播的SH波作用所致;隧道结构纵向发生水平剪切变形,变形效应沿隧道轴向逐渐减弱,洞口处产生较大刚性位移,在施工缝存在的情况下,隧道结构在洞口附近易沿施工缝产生错台现象,此响应为沿轴向传播的SH波所致。此规律表明,隧道结构的纵向抗震设计同样值得关注。
The portal section of mountain tunnels was simplified into a slope with single free face based on the theory of elastic wave. The effect of wave reflection was considered to deduce the solution of free field ground motion on the axis of tunnel under incident SH wave. The 3D shell theory was employed to provide earthquakeinduced strains. Shaking table tests were conducted for the portal section of tunnel to validate the theoretical solution. The dynamic response of lining was regarded as the superposition of the ones in cross section and in axial direction. The shearing deformation occurs in the cross section of tunnel under action of SH wave propagating parallel to the cross section. The arch spandrel and arch springing can be seen as the weak parts in seismic design of lining structure. As the distance to the tunnel portal increases, the deformation effect increases slightly. The shearing deformation occurs in longitudinal direction under the action of SH wave propagating parallel to the axial direction of tunnel. The deformation effect is gradually weakened. The dislocation occurs easily at the position of construction joint of tunnel portal due to longitudinal SH wave. Therefore the seismic design in longitudinal direction of tunnel is also worthy of consideration.
引文
[1]崔光耀,王明年,林国进,等.汶川地震区典型公路隧道衬砌震害类型统计分析[J].中国地质灾害与防治学报,2011,22(1):122–127.(CUI Guangyao,WANG Mingnian,LIN Guojin,et al.Statistical analysis of earthquake damage types of typical highway tunnel lining structure in Wenchuan seismic disastrous area[J].Chinese Journal of Geological Hazard and Control,2011,22(1):122–127.(in Chinese))
    [2]李天斌.汶川特大地震中山岭隧道变形破坏特征及影响因素分析[J].工程地质学报,2008,16(6):742–750.(LI Tianbin.Failure characteristics and influence factor analysis of mountain tunnels at epicenter zones of great Wenchuan earthquake[J].Journal of Safety and Environment,2008,16(6):742–750.(in Chinese))
    [3]高波,王峥峥,袁松,等.汶川地震公路隧道震害启示[J].西南交通大学学报,2009,44(3):336–374.(GAO Bo,WANG Zhengzheng,YUAN Song,et al.Lessons learnt from damage of highway tunnels in Wenchuan earthquake[J].Journal of Southwest Jiaotong University,2009,44(3):336–374.(in Chinese))
    [4]四川省交通厅公路规划勘察设计研究院.5·12汶川地震灾区高速公路和国省干线公路恢复重建工程调查、检测、评估[R].成都:四川省交通厅公路规划勘察设计研究院,2008.(Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department.Investigation,detection and evaluation of the restoration and reconstruction project of highways,national and provincial trunk roads in disaster areas induced by Wenchuan earthquake on May 12,2008[R].Chengdu:Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department,2008.(in Chinese))
    [5]CHEN Z Y,CHENG S,LI T B,Damage characteristics and influence factors of mountain tunnels under strong earthquakes[J].New Hazards,2012,2(61):387–401.
    [6]林国进.汶川地震四川公路隧道震害调查及分析[C]//汶川地震公路抗震技术文集.成都:四川人民出版社,2010:155–165.(LIN Guojin.Damage investigation and analysis of tunnel in Sichuan in Wenchuan earthquake[C]//Proceedings of Highway Seismic Technology in Wenchuan Earthquake.Chengdu:Sichuan People?s Publishing House,2010:155–165.(in Chinese))
    [7]李育枢,李天斌,王栋.黄草坪2#隧道洞口段减震措施的大型振动台模型试验研究[J].岩石力学与工程学报.2009,28(6):1 128–1 135.(LI Yushu,LI Tianbin,WANG Dong.Large-scale shaking table test for vibration-absorption measures of portal section of Huangcaoping tunnel#2[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(6):1 128–1 135.(in Chinese))
    [8]申玉生,高波,王英学,等.强震区山岭隧道洞口段结构动力特性分析[J].岩石力学与工程学报,2009,28(增1):3 131–3 136.(SHEN Yusheng,GAO Bo,WANG Yingxue,et al.Structural dynamic properties analysis for portal part of mountain tunnel in strong earthquake area[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(Supp.1):3 131–3 136.(in Chinese))
    [9]孙铁成,高波,王峥峥.双洞隧道洞口段抗减震模型试验研究[J].岩土力学.2009,30(7):2 021–2 026.(SUN Tiecheng,GAO Bo,WANG Zhengzheng.Aseismic and seism-reducing modeling study for entrance of two-track tunnels[J].Rock and Soil Mechanics,2009,30(7):2 021–2 026.(in Chinese))
    [10]李林,何川,耿萍,等.浅埋偏压洞口段隧道地震响应振动台模型试验研究[J].岩石力学与工程学报.2011,30(12):2 540–2 548.(LI Lin,HE Chuan,GENG Ping,et al.Study of shaking table test for seismic response of portal section of shallow unsymmetrical loading tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(12):2 540–2 548.(in Chinese))
    [11]周德培.强震区隧道洞口段的动力特性研究[J].地震工程与工程振动,1998,18(1):124–129.(ZHOU Depei.Dynamic behavior of portal part of tunnel subjected to strong ground motion[J].Earthquake Engineering and Engineering Vibration,1998,18(1):124–129.(in Chinese))
    [12]周剑.SH波作用下岩质边坡响应规律的解析探讨[J].工程地质学报,2011,19(4):570–576.(ZHOU Jian.Analytical analysis on rock slope dynamic response under action of SH wave[J].Journal of Engineering Geology,2011,19(4):570–576.(in Chinese))
    [13]石崇,周家文,任强,等.单面边坡高程放大效应的射线理论解[J].河海大学学报:自然科学版,2008,36(2):238–241.(SHI Chong,ZHOU Jiawen,REN Qiang,et al.Ray theory solution of the elevation amplification effect on a single-free-face slope[J].Journal of Hohai University:Natural Sciences,2008,36(2):238–241.(in Chinese))
    [14]HASHASH YMA,HOOK J J,SCHMIDT B,et al.Seismic design and analysis of underground structures[J].Tunnelling and Underground Space Technology,2001,16:247–293.
    [15]王明年.高地震区地下结构减震技术原理的研究[博士学位论文][D].成都:西南变通大学,1999.(WANG Mingnian.Study on shock absorption technology of underground structure in high earthquake intensity area[Ph.D.Thesis][D].Chengdu:Southwest Jiaotong University,1999.(in Chinese))
    [16]PECK R B,HENDRON A J,MOHRAZ B.State of the art of soft ground tunnelling[C]//Proceedings of the Rapid Excavation and Tunnelling Conference.Chicago:[s.n.],1972:259–286.
    [17]KUESEL T R.Earthquake design criteria for subways[J].Journal of Structural Engineering(ASCE),1969,ST6:1 213–1 231.
    [18]GEORGE P K,GEORGE D B,CHARIS J G.3-D shell analysis of cylindrical underground structures under seismic shear(S)wave action[J].Soil Dynamic and Earthquake Engineering,2006,26:909–921.
    [19]蒋树屏,文栋良,郑升宝.嘎隆拉隧道洞口段地震响应大型振动台模型试验研究[J].岩石力学与工程学,2011,30(4):649–656.(JIANG Shuping,WEN Dongliang,ZHENG Shengbao.Large-scale shaking table test for seismic response in portal section of Galongla tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(4):649–656.(in Chinese))
    [20]中华人民共和国行业标准编写组.JTG D70-2004公路隧道设计规范[S].北京:人民交通出版社,2004.(The Professional Standards Compilation Group of People?s Republic of China.JTG D70-2004Code for design of road tunnel[S].Beijing:China Communications Press,2004.(in Chinese))
    [21]杨俊杰.相似理论与结构模型试验[M].武汉:武汉理工大学出版社,2005:38–46.(YANG Junjie.Similar theory and structure model test[M].Wuhan:Wuhan University of Technology Press,2005:38–46.(in Chinese))

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