Abstract: Basing on the engineering seismological environmental evaluation of the urban area,study ofengineering geological condition：and test and analysis of dynamic characteristics of constructionsites in Natong urban area,The regularities of spatial distribution of engineering geological conditions and earthquake resistance capability of site soil are clarified. Study on dynamic characteristics of site soil and analysis of seisrnic response of soil layers enabled us to compile a map of composite zonation of the urban area,which provides basic geological data for engineering construction siting and dynamic parameters for anti-seismic structure design.

Key words: Nantong, Engineering seismology, Seismic intensity zonation

摘要： 以场地工程地震环境评价为基础,通过南通市区建筑场地的工程地质条件研究和场地土动力特性的测试分析,查明了市区工程地质条件的空间分布规律和场地土的抗震性能；通过场地土动力特性研究和上层地震反应分析,编制了城市场地综合区划。为工程建设选址和工程地质勘察提供了地质基础资料,并给出工程抗震结构设计动参数,该研究成果可作为工程结构抗震设防的依据。

关键词: 南通, 工程地震, 地震烈度区划