论铁路路基填料分类

通过对铁路路基施工中出现填料工程质量问题的分析,认为现行铁路规范所采用的"粒度累积分类法"依据单一,不能很好地反映土性;"统一分类法"依据土的颗粒组成、颗粒级配、细粒含量、相邻粒组的含量以及塑性指标(塑性指数、液限),更具科学性。为使我国铁路规范中的"填料分类"逐步向"统一分类法"靠近,并与"岩土分类"标准统一,提出两个修改方案:方案A为过渡方案,对现行分类只作粒组划分和细粒含量局部调整;方案B则以"统一分类"体系为框架,同时又照顾方案A的分类习惯,使两种方案能够衔接。

Railway Subgrade Filling Material Classification

Through the analysis of the problems existing in the filling material quality during railway subgrade construction, the paper holds that the "Granule Accumulation Classification Method" specified by the existing railway regulations is prepared on a limited basis, and fails to reflect the soil nature as a whole. The "Uniform Classification Method" is prepared on the basis of the soil granule composition, granule rating, fine granule contents and the neighboring granule group contents and the plastic index (plastic index and fluid limit) and thus is more scientific. In order to get the filling material classification specified in the Railway Regulations closer to the "Uniform Classification Method" and be uniform with the "rock and soil classification" the paper puts forward two revised solutions: Solution A is a transitional one, only classifying the existing granule groups and adjusting some fine granule contents; Solution B is one that uses the "Uniform Classification Method" as the scenario and at the same time gives some consideration of the practice of Solution A so that the two solutions are properly linked.