【文件属性】：
文件名称：地震动衰减关系
文件大小：6.21MB
文件格式：PDF
更新时间：2016-08-31 08:08:09
文章
Ground motions intensity measures (IMs) are typically estimated using probabilistic seismic
hazard analyses (PSHA), which combine the effects of source, path, and site on the IM. Hazard
analyses use attenuation relationships to define the probability density function (PDF) for IM
conditioned on earthquake magnitude and site-source distance. These PDFs are log-normal,
being defined by a median and standard deviation. When ground response analyses are
performed to evaluate site effects in lieu of more approximate methods, it is with the expectation
that the standard deviation would be reduced and any bias in the median would be removed. This
study investigates the degree to which these benefits of ground response analyses are realized as
a function of site condition, and outlines how ground response analyses can be implemented
within PSHA.