地震动场地调整系数研究

Review on research of ground motion site adjustment coefficient

回顾总结了近20年国内外关于地震动场地调整系数的主要研究成果,重点分析强震动观测和数值理论方法在考虑场地条件对地震动参数影响方面的效果,总结各类方法的适用性和优缺点,结合国内外相关规范条文对比分析国内外的主要成果,得出我国软土的场地调整系数值小于国际水平,并进一步分析了造成这种差异的原因。最后基于目前国际地震区划工作的发展趋势以及各行业相关规范的新技术需求,对新一代区划图的研究工作进行了展望。

This paper reviews and summarizes the main research results on the adjustment coefficients of ground motion field at home and abroad over the past 20 years,focusing on the effective means of considering the influence of filed conditions on ground motion parameters through strong ground motion observation and numerical theory methods.It summarizes the applicability along with the pros and cons of various methods,conducts a comparative analysis of the main results at home and abroad by combining relevant codes and provisions,and concludes that the coefficients of soft soil field in China are smaller than the international level.What’s more,the reasons for this difference are further analyzed.Finally,based on the current development trend of international seismic zoning work and the new technical requirements of the relevant codes in various industries,it puts forward prospects for the research work of the new generation of zoning maps.