研究目的：本文主要研究红层泥岩的击实性质、CBR承载比、模拟路基荷载下的膨胀率、无侧限强度、三轴剪切强度及压缩模量，用以验证将红层泥岩用作高速铁路路基及基床填料的适应性。
研究结果：得出了红层泥岩的最大干密度、最优含水量、浸水前后的强度及变形特性、CBR承载特性与膨胀特性等物理力学特性;结合达成新线试验段的试验研究及施工，分析了高路堤浸水前后的变形特性，提出了在实际工程中使用红层泥岩填料填筑路基的意见和建议。
Research purposes: The main researches are done on the heavy tamping property, CBR bearing ratio, expansibility under simulated load of subgrade, unconfined strength, tri-axial shear strength and modulus of compression for the purpose of verifying the feasibility of using red rock as the filling for high-speed railway.
Research results: Through doing researches, the mechanical and physics characteristics of red rock are obtained, such as the maximum dry density, optimum moisture content, shear strength characteristics under saturated and non-saturated conditions, CBR, expansive characteristic and so on. In combination with the experimental research and construction conducted in Dazhou-Chengdu Railway, the analysis of deformation characteristics of high embankment under saturated and non-saturated conditions are made and also the proposals are made to application of red rock as filling materials in filling subgrade.
PDF(396 KB)
