某地区浅层土体土性参数随机场及其数字特征研究  

Study on random field of soil properties and its digital characteristics of shallow soil in an area

作　　者：黄哲希 Huang Zhexi(Xiangya Hospital,Central South University,Changsha 410008,China)

机构地区：[1]中南大学湘雅医院,湖南长沙410008

出　　处：《山西建筑》2022年第6期78-81,86,共5页Shanxi Architecture

摘　　要：岩土体空间变异性对岩土工程影响重大。研究了××地区土性参数变异性,分析了取样间距、空间范围对波动范围的影响。研究表明研究区浅层典型土层垂直向波动范围均值约0.5 m~0.6 m,波动范围在0.1 m~1.15 m不等。波动范围在取样间距小于0.4 m时较平稳。波动范围均值有随空间范围的增加而增加的趋势,建议该地区土性波动范围计算采用空间范围取3.5 m~4.5 m较为合适。指数余弦型相关函数最适合该地区的土层,高斯型相关函数次之。The spatial variability of rock and soil has a great influence on geotechnical engineering. In this paper, the variation of soil parameters in an area is studied, and the effects of sampling spacing and spatial range on the fluctuation range are analyzed. Research results show that the average vertical scale of fluctuation of the shallow typical soil layers in the study area is 0.5 m~0.6 m, and the scale of fluctuation is 0.1 m to 1.15 m. The scale of fluctuation is relatively stable before the sampling interval is less than 0.4 m. The mean value of the fluctuation has a tendency of increasing with the increase of the spatial scale. It is recommended that the calculation of the scale of fluctuation in this area be based on the average spatial scale of 3.5 m to 4.5 m. The exponential cosine-type correlation function is most suitable for the soil layer in the region, followed by gaussian-type function.

关 键 词：岩土工程 随机场 波动范围 空间范围 

分 类 号：P642[天文地球—工程地质学]