路基工作区深度及其影响因素研究

Study on Depth of Roadbed Working Area and Its Influence Factor

采用基于弹性层状体系理论的BISAR软件,以轮载附加应力与路基土的自重应力的比值作为判定标准,计算了不同路面结构、车辆轴载和路基回弹模量条件下的路基工作区深度。分析了路面结构厚度、车辆轴载和路基回弹模量对路基工作区深度的影响机理和路基工作区深度的变化规律。提出了不同条件下路基工作区深度的建议值,为确定低填和挖方路基的下挖处理深度提供了理论依据。

Using BISAR software based on the layered elastic system theory and taking the specific value of the subsidiary stress of wheel load and the deadweight stress of roadbed soil as the deciding standard, the article calculates the depths of roadbed working area under the conditions of the different pavement structures, vehicle axle loads and roadbed resilience modulus, analyzes the influence mechanism of pavement structure thickness, vehicle axle load and roadbed resilience modulus on the depth of roadbed working area and the varying law of roadbed working area depth, and puts forward the proposal value of roadbed working area depth under the different condition, which provides the theoretical basis for determining the treatment depth of low-filled and excavated roadbed.