公路非饱和路基土力学特性分析

非饱和土由于气体的存在，其性质与饱和土有显著的差异。采用室内外试验测试、数值分析和理论解析等手段．对非饱和路基土的物理力学特性以及影响非饱和土性质的主要因素——水对非饱和路基土物理力学特性的影响进行研究，分析非饱和土路基的强度与变形特性，提出基于非饱和土理论的路基设计及施工控制关键技术。

Mechanical Properties of Unsaturated Soil of Highway Subgrade

The nature of the unsaturated soil is quite different from that of saturated soil for the reason of the existence of the gas. This paper uses the methods of indoor and outdoor tests, numerical and the- oretical analysis to do studying on the physical and mechanical properties of unsaturated subgrade soil and the effect of water, one of the main factors having influence on the nature of unsaturated soil, on the physical and mechanical properties of unsaturated soil; to analyze the strength and the deformation characteristics of the unsaturated soil subgrade, propose the technology of subgrade design and con- struction control based on the unsaturated soil theory.