成都盆地不同工程地质分区内场地地震动参数的计算分析  

Calculation and analysis of seismic ground motion parameters for different engineering geological divisions of Chengdu basin

作　　者：荣棉水[1,2] 王世元[3] 李小军[1] 吕悦军[2] 盛强[4] 黄雅虹[2] 方怡[2] 

机构地区：[1]中国地震局地球物理研究所,中国北京100081 [2]中国地震局地壳应力研究所,中国北京100085 [3]四川省地震局,中国成都610041 [4]广东省地震局,中国广州510070

出　　处：《地震学报》2013年第4期543-552,共10页Acta Seismologica Sinica

基　　金：中央公益型研究所基本科研业务专项基金(ZDJ2011-14);2007年公益性行业科研专项(850);国家重点基础研究发展计划(973项目)(2011CB013601)共同资助

摘　　要：场地条件对地震动幅值和频谱特性均有影响,现行的中国地震动参数区划图根据场地类别调整地震动反应谱特征周期,但尚未考虑到对地震动峰值和反应谱平台值的调整.以成都盆地为例,广泛收集了盆地范围内的工程钻孔资料.考虑到不同工程地质分区内场地地震动参数可能存在较大差异,在研究区工程地质分区的基础上,利用等效线性化方法对钻孔进行了土层地震反应分析,给出了成都盆地内不同工程地质分区的地震动参数调整系数建议值.Site condition can affect amplitude and spectrum characteristics of seismic ground motion. Adjustment scheme for ground motion characteristic period of response spectrum in Current Seismic Ground Motion Parameter Zonation Map of China was given but peak ground motion and platform value of response spectrum were not taken into account. Illustrated by the example of Chengdu basin, engineering borehole data in the basin region were extensively collected. In consideration of the large difference between different engineering geological divisions, the equal linear method was used to conduct seismic response analysis of soil layers for different boreholes based on engineering geological division. As a result, suggested earthquake ground motion adjustment factors for different engineering geological divisions were given.

关 键 词：成都盆地 工程地质分区 地震动参数 

分 类 号：P315.9[天文地球—地震学]