摘要
依据十堰市城区工程项目地震安全性评价工作中地脉动实测数据,以场地土动力特性和地脉动频谱结构为研究对象,对城区场地进行了地脉动的测试及频谱分析。并结合岩土工程勘察报告对工程场地的脉动频谱曲线进行了分类统计,结果表明地基土刚度变化与覆盖层厚度有关,卓越周期值的变化与场地地质条件相对应。为场地评价和工程抗震设计提供了依据。
According to the measured data of the micro - tremor in the seismic safety evaluation of the engineering project in the urban area of Shiyan, the dissertation aims to study the dynamic properties of soil and the spectral structure of ground micro-tremor. By testing the micro-tremor in the urban area and analyzing its spectrum, the micro-tremor spectrum curve is classified and studied with the help of the report of geotechnical engineering exploration. The result shows that the variety of stiffness of the foundation soil is related to the thickness of the covering layer, and that the changes of dominant periods correspond to the geographical condition of theengineering site. Thus, it provides basis for site evaluation and engineering seismic design.
出处
《湖北工业职业技术学院学报》
2014年第2期104-106,共3页
Journal of Hubei Industrial Polytechnic
关键词
地脉动
卓越周期
地震
工程场地条件
micro-tremor
dominant period
earthquake
engineering site condition
