填石路基稳定性设计方法研究

填石路基是山区高等级公路常见的路基形式,其稳定性是一个值得重视的问题。本文在分析填石路基现行设计方法的基础上,从填石路基边坡码砌层和内部填石的力学作用与力学特性出发,导出了填石路基稳定性计算公式,给出了计算参数的选取方法,分析了码砌厚度、内部填石压实质量、地基承载力等因素对填石路基稳定性的影响,从而建立了该类路基的稳定性设计方法。通过计算示例和工程实践分析,阐明了本文方法的理论与实用价值,可供山区填石路基稳定性设计参考。

Study on Design Method of Stone-filled Subgrade Stability

The stone-filled subgrade is common in high grade highway in mountain areas,and its stability is very important.Based on the analysis of the current design method of the stone-filled subgrade,the calculation formula of the stability of stone-filled subgrade is presented according to the mechanical mechanism and characteristic of stone-built slope and internal stone filling.At the same time,the method of choosing calculation parameter is given.Considering the thickness of stone-built slope,the compaction quality of internal stone filling and the ground bearing capacity,the stability design method of such subgrade is put forward in this paper.With the analysis of typical examples and engineering practice,the theoretic and practical significance of this method is expounded,which can provide reference for the stability design of the stone-filled subgrade in mountain areas.