摘要
为研究地脉动H/V谱比法在确定红土场地卓越周期中的适用性,对不同类别红土场地开展系统的地脉动测试。首先利用地脉动H/V谱比法中水平分量的不同组合方式处理地脉动测试数据,得到HVSR曲线;然后分析HVSR曲线,获取场地卓越周期,进而确定场地类别,划分场地岩土类型;最后结合钻孔勘探信息,验证了地脉动H/V谱比法在确定红土场地卓越周期中具有良好的适用性,且H/V谱比法中采用东西和南北向水平分量的矢量和组合方式可更加简便和准确地获取场地卓越周期。
To study the applicability of the H/V spectral ratio method for determining the predominant period of laterite sites,we conduct systematic microtremor measurement on different classifications of laterite sites and process the microtremor measurement data using different combinations of horizontal components in the H/V spectral ratio method to get the HVSR curves.We analyze the HVSR curves to obtain the predominant period of the sites,and then determine the site classifications and divide the site geotechnical types.Finally,we verify the applicability of the microtremor H/V spectral ratio method for determining the predominant period of laterite site by borehole exploration.Moreover,using the combination of the sum of east-west and north-south vectors as horizontal components in the microtremor H/V spectral ratio method can obtain the predominant period of the site more easily and accurately.
作者
周仰新
李永强
许言
刘旭锋
姬雪明
ZHOU Yangxin;LI Yongqiang;XU Yan;LIU Xufeng;JI Xueming(School of Civil and Architecture Engineering,East China University of Technology,Nanchang 330013,China;Nanchang Emergency Management Bureau,Nanchang 330038,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2024年第8期841-846,共6页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(52068002)
江西省“双千计划”(DHSQT32022006/JXSQ2020101041)
东华理工大学博士科研启动基金(DHBK2019245)。
关键词
地脉动
H/V谱比法
红土场地
卓越周期
场地类别
microtremor
H/V spectral ratio method
laterite site
predominant period
site classifications
