《中国地震动参数区划图》(GB 18306—2015)编图方法在云南地区的应用实践  

Application Practice of Mapping Method of Seismic Ground Motion Parameter Zonation Map of China(GB18306-2015) in Yunnan Area

作　　者：闻满华[1] 

机构地区：[1]云南省地震局,云南昆明650041

出　　处：《地震研究》2017年第2期257-263,共7页Journal of Seismological Research

基　　金：国家国际科技合作专项:中国-东南亚毗邻区大震活动地球动力学研究(2015DFA21260)资助

摘　　要：采用《中国地震动参数区划图》(GB 18306—2015)编图的技术方法,将云南地区划分为0.2°×0.2°的网格点,计算了基岩峰值加速度,并转换为一般场地结果,与五代图颁布的结果进行比对分析,同时对蒙自地区某代表场地计算了基岩反应谱并进行分析讨论。结果表明:云南地区绝大部分计算点的50年10%超越概率水平对应的一般场地峰值加速度试算结果与五代图比较吻合。从反应谱计算结果可以看出,五代图的计算方法及结果有效反映了云南地区地震环境对该代表场地的影响。建议今后云南地区地震危险性分析工作应采用五代图编图的技术方法。Using the method of the fifth generation of the Seismic Ground Motion Parameter Zonation Map of China, we calculated the peak ground acceleration on bedrock in a grid of 0.2 × 0. 2 degrees in Yunnan Province. The results were converted to normal field, and then compared to the fifth generation map. We also analyzed the re- sponse spectrum of bedrock on a representative site. The comparison result shows that the calculated peak ground acceleration for an exceeding probability of 10% in the future 50 years is consistent with the fifth generation map in most of Yunnan Province. Based on the response spectrum analysis, the fifth generation map successfully re- flects the effect of the Yunnan earthquake environment in this area. So we recommend the method of the fifth generation map for seismic hazard analysis in the future.

关 键 词：中国地震动参数区划图 基岩峰值加速度 超越概率 地震危险性分析 

分 类 号：P315.911[天文地球—地震学]