16WCEE地震动研究相关论文综述

Summary of the 16WCEE papers on ground motion study

本文从地震动工程特征、地震动衰减的经验性统计、基于地震学的地震动研究、地震动场的空间相关性、局部场地条件对地震动的影响和其他地震动研究等6个方面,综述了16WCEE上的相关论文从一个侧面反映的最近四年地震动研究的主要进展和发展趋势。地震动的工程特征依然是一个研究重点,采用多个指标综合表达地震动对工程结构的破坏作用是当前的趋势。基于观测数据的经验性统计,在NGA项目引起轰动之后,研究的重点多在区域数据的收集整理上,一些地区的研究不得不降低限制条件或补充模拟的大地震、近场强地震动"数据"。对强地震动观测数据不充分的地区,基于地震学的估计地震动方法研究成为主流,随机合成地震动的方法最受关注,格林函数的研究仍保持一定的热度。一些论文研究建立空间相关性模型以及在地震动估计中的应用。局部场地条件对地震动的影响是论文中讨论最多的话题,充分表明这个问题的复杂性。

From the aspects of ground motion characteristics, empirical ground motion attenuation, seismology based ground motion prediction, the spatial variability of strong ground motion field, local site effect on ground mo- tion and others, the related 16WCEE papers are summarized. Thus, the progress and the trend in the last four years are reflected unilaterally. Engineering characteristics of ground motion is still an important point, and it is a trend to use multiple indices to express the destructive effect of ground motion on engineering structures. After the hot discussion on NGA projects, the focus of empirical attenuation relations is on collecting and processing regional data, in which the ranges of data selection have to be extended and near-fault numerical simulations of large earthquakes are supplied. For regions lack of strong motion records, seismology based ground motion prediction becomes predominant, the focus is stochastic simulation, and the study on Green＇ s Function is still a topic. The spatial variability and its application in ground motion prediction are discussed in some papers. The most popular topic is the effect of local site condition, which shows the complexity.