公路路基填土的基本力学性质研究

Study on Basic Mechanical Properties of Roadbed Filling

依托内蒙G210线添漫梁北至越家壕(查干段)改线工程,开展加州承载比CBR试验、室内回弹模量试验以及直接剪切试验,分析研究了两种填土土样的CBR值和回弹模量等基本力学性质,为公路路基的设计与施工提供参考。试验结果表明,实际工程路基填土CBR满足规范要求,回弹模量与压实度之间存在良好的线性相关性。获取的基本力学性质参数可以为路基的设计与施工以及路基边坡的稳定性分析提供所需的基本参数。

This paper relies on the Inner Mongolia G210 line to add the Liangbei to Yuejiatun(Chagan section)rerouting project,carry out the California bearing ratio CBR test,indoor rebound modulus test and direct shear test,and analyze the two kinds of fill soil. The basic mechanical properties such as CBR value and rebound modulus provide reference for the design and construction of highway subgrade. The test results show that the actual engineering roadbed fill CBR meets the requirements of the specification,and there is a good linear correlation between the rebound modulus and the compaction degree. The basic mechanical properties obtained can provide the basic parameters required for the design and construction of the subgrade and the stability analysis of the subgrade slope.