Abstract:
China’s flat areas are vast, and as a largely urbanized, densely populated, economically developed country, the job of earthquake prevention and disaster reduction is especially important. Gaoyou lies in north Jiangsu plain which located in the lower reaches of Yangtze river. Taking Gaoyou city as an example, this paper studies the characteristics of ground motion, and summarizes and discusses several main factors influencing ground motion parameter microzonation. Borehole layout after considering many factors, increasing the level of ground motion probability, using statistical analysis theory, supplementing data, building soil mechanics model, using surface peak acceleration to magnify times, to study on how to alleviate the defect of equivalence method on underestimating high frequency ground motion.