1.看教程，地震动力分析前需要做初始静力应力分析，那么采用sigam原位分析和quake初始静态有什么区别，或者哪个对？
答：原文：If the initial stresses come from a SIGMA/W analysis,then the structural elements could possibly have some initial stresses and forces.两者都可以，sigam原位分析可能会包括一些结构元素的应力和力。单纯岩土的话应该没有区别。
2.为什么原位分析点液化区域也会出现一些液化区域（默认黄色的）。
答：原文：This procedure also results in some elements being marked as liquefied prior todoing the dynamic analysis. Physically, this means that these areas have such ahigh potential for liquefaction that any amount of earthquake shaking will causeqp'BCollapse surfaceqssLL Steady-State Line p'ss the soil to liquefy. That this may actually be the case in the field was consideredby Kramer and Seed (1988) who noted that when the initial shear stresses arelarge, flow liquefaction may be initiated by only a very small disturbance.这种标识的意思是说这些区域是液化高危区，任何一点小的震动都会引起这些区域的液化。
3.QUAKE/W是怎么判断液化的。
答：根据我看的资料和教程，貌似有三种方式 1种是云图-液化-循环应力比，我感觉就是CSR；另一种是云图-有效应力-q/p‘；最后是右侧工具栏显示液化区域这个选项。第一种通过地勘得到的液化剪应力比值可以通过云图调节得到液化区和液化程度；第二种q/p‘的点处在坍塌面之上的为液化，但是我没找到坍塌面是怎么定义出来的，而且每一步都不一样，以最后一步判断？；第三种我也没找到程序怎么自动判断出来的说明，但是和第一种的区域基本是一致的。
QUAKEW 2007 engineering book.pdf (3548 K) 下载次数:52
