基于常时微动观测的呼和浩特市区地基土振动特性及分类研究  

Study on Vibration Characteristics and Classification of Foundation Soil of Hohhot City based on Constant Fretting Observation

作　　者：布仁[1] 那仁满都拉[1] 包玉海[2] 张建中 松岛信一 川濑博 

机构地区：[1]内蒙古师范大学自然灾害防治研究所,内蒙古呼和浩特010022 [2]内蒙古师范大学内蒙古自治区遥感与地理信息系统重点实验室,内蒙古呼和浩特010022 [3]内蒙古自治区地震监测预报研究中心,内蒙古呼和浩特010010 [4]京都大学防灾研究所,日本京都611001

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2014年第1期86-91,共6页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：国家"十二五"科技支撑计划项目(2013DAK05B01);内蒙古自然科学基金资助项目(2011BS0706);内蒙古自治区应用技术研发资金计划项目(20110524)

摘　　要：以呼和浩特市区地基土为研究对象,实施线状样点常时微动观测,从而掌握了观测场地的振动特性及其空间变化规律.同时,以观测到的卓越周期为基础,通过经验性分析法,划分了观测地区地基土种类.研究结果表明,研究区地基土卓越周期为0.21～1.25s,从北部往南逐渐增大然后变小,从城市中心偏西南部地区的卓越周期最大,推定的地基土分类为以异常松软而很厚的土为主,往北靠近大青山地区的地基土呈现逐渐变硬的趋势.该研究成果可为呼和浩特市区城市规划、土地利用、工程抗震及震害预测提供参考.Based on the study of foundation soil in Hohhot, constant fretting observation of striation sample point has been implemented,and the vibration characteristics and its space variation law of observa- tion site have thus been grasped. Meanwhile, based on the observed predominant period and by Empirical Analysis, the species of foundation soil are divided. The predominant period of foundation soil in study area is 0.21- 1.25 seconds and it gradually increases from northern to the southern and then decreases. The predominant period is the largest in the southwest area from the urban center. The species of putative foun- dation soil is mainly abnormally soft and thick soil, and the foundation soil near the Daqingshan Area shows tendency of gradually being hard. The research achievements could provide reference for urban plan- ning,land use,earthquake resistant engineering and earthquake damage prediction in Hohhot city.

关 键 词：常时微动观测 卓越周期 地基土 呼和浩特市 

分 类 号：S812[农业科学—草业科学]