地震地表破裂特征及其对应的分析方法
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摘要
介绍了Kocaeli地震和集集地震的板块构造和区域地震的活动特性,及地震引起的地表破裂,提出了一种基于动力学和界面系统的、局部宏观尺寸的震源动力破裂过程分析方法。归纳出基于材料破坏分析基础的地震地表破裂的5种主要特征,应用材料和界面本构描述的控制方程稳定性讨论,阐明了地表破坏类型对应的力学机制,提出了相应的分析方法。
Surface ruptures caused by strong earthquakes of Kocaeli and Chi-Chi,and local continental tectonics,earthquake activity are introduced here.A general method of source rupture progress is proposed based on a macroscopical dynamic system of discontinuous earth media and interfaces.For existent surface ruptures,5 main types are classified by in-situ survey and in general sense,which are shear strain localization,tensional break, shear fragmentized belt,plastic deformation zone,and liquefaction/lateral movement divisions.And related methods of those kinds of geomaterial failure of onset and evolution are proposed based on stability of governing equations with specified constitutive models.
Surface ruptures caused by strong earthquakes of Kocaeli and Chi-Chi,and local continental tectonics,earthquake activity are introduced here.A general method of source rupture progress is proposed based on a macroscopical dynamic system of discontinuous earth media and interfaces.For existent surface ruptures,5 main types are classified by in-situ survey and in general sense,which are shear strain localization,tensional break, shear fragmentized belt,plastic deformation zone,and liquefaction/lateral movement divisions.And related methods of those kinds of geomaterial failure of onset and evolution are proposed based on stability of governing equations with specified constitutive models.
引文
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[15]张洪武.材料应变局部化分析中不同内尺度律参数间相互作用问题的讨论[J].岩石力学与工程学报,2004,23(19):3245-3251.
[16]陈刚,潘一山.岩石应变局部化的二维应变梯度塑性解析分析[J].岩石力学与工程学报,2004,23(11):1785-1791.
[17]Biot MA.Theory of propagation of elastic waves in a fluid-saturated porous solid[J].J.Aooust.Soc.Amer.,1956.28(2):168-178.
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[19]赵纪生.基于损伤考虑的多孔介质理论解析[J].湘潭矿业学院院报,2001,16(4):48-54.
[20]赵纪生.多孔介质的细观损伤本构模型[J].湘潭矿业学院院报,2002,17(1):73-78.
[21]赵纪生.饱和两相介质的应变局部化萌生条件[J].岩土力学,2004,25(5):749-754.
[2]Lettis W.et al.Influence of releasing step-overs on surface fault rupture and fault segmentation:examples fromthe 17 August1999 Izmit Earth-quake on the North Anatolian Fault,Turkey[J].Bulletin of the Seismological Society of America,2002,92(1):19-42.
[3]Barka A,et al.The surface rupture and slip distribution of the 17 August1999 Izmit Earthquake(M7.4),North Anatolian Fault[J].Bulletinof the Seismological Society of America,2002,92(1):43-60.
[4]黃奇瑜.九二一集集大地震全面勘災報告:地質組調查[R].國家地震工程研究中心,1999.
[5]Rice J R,Lapusta Nand Ranjith K.Rate and state dependent friction and the stability of sliding between elastically deformable solids[J].Jour-nal of the Mechanics and Physics of Solids,2001,49(9):1865-1898.
[6]Shi G H.Application of discontinuous deformation analysis and manifold method[A].Proceedings of3rd International Conference of Analysis ofDiscontinuous Deformation[C].Amadei B(ed),Colorado,1999.3-15.
[7]石根华.数值流形方法与非连续变形分析[M].裴觉民译.北京:清华大学出版社,1997.
[8]Dieterich J H.Modeling of rock friction,1.Experimental result and constitutive equations[J].Journal of the Mechanics and Physics of Solids,1979,84(B5):2161-2168.
[9]Ranjith K and Rice J R.Stability of quasi-static slip in a single degree freedom elastic system with rate and state dependence friction[J].Jour-nal of the Mechanics and Physics of Solids,1999,47(6):1207-1218.
[10]赵纪生.局部加载条件下二维土质边坡稳定性的数值分析[J].岩土力学,2004,25(7):1063-1067.
[11]zhao J.et al,An approach to evaluate grourd surface rupture caused by reverse fault morement[J].Journal of Earthquake engineering and Engi-neering vibration,2006,5(1):29-39.
[12]Borja R I.Strain localization in frictional materials exhibiting displacement jump[J].Computer Methods in Applied Mechanics and Engineering,2001,190(20/21):2555-2580.
[13]Fleck N A,Hutchinson.A phenomenological theory for strain gradient effects in plasticity[J].J Mech.Phys.Solid,1993,41(12):1825-1857.
[14]Fleck N A,Hutchinson.Strain gradient plasticity[A].Advanced Applied Mechanics[C].Hutchinson,(ED.),Academic Press,1997.295-361.
[15]张洪武.材料应变局部化分析中不同内尺度律参数间相互作用问题的讨论[J].岩石力学与工程学报,2004,23(19):3245-3251.
[16]陈刚,潘一山.岩石应变局部化的二维应变梯度塑性解析分析[J].岩石力学与工程学报,2004,23(11):1785-1791.
[17]Biot MA.Theory of propagation of elastic waves in a fluid-saturated porous solid[J].J.Aooust.Soc.Amer.,1956.28(2):168-178.
[18]门福录.波在饱和流体的空隙介质中的传播问题[J].地球物理学报,1981,24(1):65-75.
[19]赵纪生.基于损伤考虑的多孔介质理论解析[J].湘潭矿业学院院报,2001,16(4):48-54.
[20]赵纪生.多孔介质的细观损伤本构模型[J].湘潭矿业学院院报,2002,17(1):73-78.
[21]赵纪生.饱和两相介质的应变局部化萌生条件[J].岩土力学,2004,25(5):749-754.
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