【摘要】 对工程场地的地震危险性分析是地震安全性评价的主要方法,并且为工程师提供抗震参数.在分析国内概率性地震危险性分析(PSHA)方法基础上,提出了基于GIS的概率性地震危险性分析的可行性方案.通过MAPGIS二次开发编写了地震危险性分析程序,并以三峡坝区某工程场地为例对程序进行了测试.基于MAPGIS的概率性地震危险性分析程序提供友好的人机交互界面,提高了地震危险性分析的可操作性,更重要的是帮助用户从空间数据中挖掘更多的信息.更多还原

【Abstract】 Engineering seismic hazard analysis for a specified site represents an essential element of seismic safety assessment, and provides engineers with the standards of protection against earthquakes.In this paper, on the basis of investigation of the several PSHA (probabilistic seismic hazard analysis) methods in China, the feasible methods and solutions of PSHA based on GIS were put forward. Through the secondary development of MAPGIS, a PSHA procedure is developed. Finally, a PSHA example in the Yangtze Gorges district has testified the feasibility of the procedure. The PSHA procedure based on MAPGIS not only provides users with interactive interface to improve maneuverability, but also mines the information of PSHA from geo-data.更多还原