基于强震观测数据的土层场地反应的研究现状  

A review of study on soil site response estimating from strong motion data

作　　者：王海云[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：《地震工程与工程振动》2014年第4期42-47,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金面上项目(41372335)

摘　　要：土层作为一个多自由度体系,当地震波从基岩传播到其中时,其多个振型被激励,放大作用随深度的变化是按照不同振型的特征而有规律地变化。按照不同振型的自振频率分析场地放大作用的特征,可以从本质上揭示场地的固有特性。基于大量相关文献,从场地反应的估计方法、场地反应的机制、非线性场地反应和盆地中沉积物厚度对地震动的影响四个方面综述了基于强震观测数据的土层场地反应的研究现状,并指出其发展趋势。As soil layer is a multi-degree-of-freedom system, different vibration modes in soil layer are excited while seismic wave propagates into the soil layer from the bedrock, and variations of the soil site amplification with depth are in accordance with characteristics of different vibration modes. Analyzing characteristics of site amplification according to natural frequencies of different vibration modes, the intrinsic property of the soil site can be essentially revealed. Based on a number of related literatures, the current research status of soil site response estimating from strong motion data is reviewed from following aspects： the estimating methods and the mechanism of soil site response, the nonlinear soil site response, and the effect of sediment thickness in a basin on ground motion. And developing trends of soil site response estimating from strong motion data are pointed out.

关 键 词：土层场地反应 强震观测数据 岩土台阵 传统谱比法 振型 

分 类 号：P315.9[天文地球—地震学] P315.63[天文地球—固体地球物理学]