黄土高原地区公路路基土性参数统计分析

Statistical Analysis on Loess Parameter of Highway Subgrade in Loess Plateau Area

选取黄土高原地区公路路基黄土的物理力学参数为研究对象,采用统计分析的方法,分析了黄土物理力学参数在太原—潼关、靖边—铜川和兰州—西安公路一线的变化,得出了粒度组成自西北向东南逐渐变细,ω、ρd、Ipc、逐渐增大;e、a、sδ、φ逐渐减小的变化规律;对黄土的物理力学参数进行了统计,得出了各区路基土性参数的统计表,从而为黄土高原地区的公路建设提供了最基本的科学依据。

By statistical method, this paper studies the physical and mechanical parameters of loess in highway subgrade in loess plateau area, analyzes the variation of the parameter from Taiyuan to Tongguan, from Jingbian to Tongchuan and from Lanzhou to Xi＇an. It is found that the grain size decreases gradually; ω,ρd ,Ip, and c increase gradually; e,α,δ ,φ decrease gradually from northwest to southeast. Meanwhile, the loess physical and mechanical parameters are analyzed statistically, the property of parameters in each area have been obtained, which provide an essential data to highway construction in loess plateau area.