高速铁路路基粗颗粒土填料物理改良试验分析

Experimental Analysis of Physics-based Improvement of Coarse Particle Fillers of Subgrade on High-speed Railway

以哈大客运专线某段路基填料物理改良试验为例,介绍基于天然粗颗粒土填料而进行的物理改良从而获得满足规范要求填料的方法。通过分析物理改良过程和结果,提出粗颗粒土物理改良适用条件。同时,对现行路基填料分级提出改进建议。

Taking the experiment of physics-based improvement of the fillers for a certain subgrade section on Haerbin-Dalian passenger-dedicated line as the example, the thesis introduced a method with which the natural coarse particle soils can be improved based on physical method so as to obtain a kind of subgrade fillers in accordance with the requirement of current standards. Through analysis of the process and the result of the physics-based improvement, the thesis proposed an applicable condition of physics-based improvement of coarse particle fillers. Also, a good suggestion for the classification of the subgrade fillers widely used at present was suggested here.