地震地表破裂特征及其对应的分析方法  

Characteristics of earthquake surface ruptures and related analytical methods

作　　者：赵纪生[1] 陶夏新[1] 师黎静[1] 刘艳琼[1] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《世界地震工程》2007年第3期68-73,共6页World Earthquake Engineering

基　　金：国家自然科学基金(50478034)

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.

关 键 词：地震地表破裂 控制方程的稳定性 剪切面 拉伸破裂 破碎带 液化和侧向流动分析 

分 类 号：P315[天文地球—地震学]