高速公路软基过渡段合理长度分析

Analysis of reasonable transition section length of highway soft foundation

为实现公路软基和普通路基沉降的平稳过渡,通过建立车辆垂向振动分析模型,研究了高速公路软基过渡段段落的合理长度。结果表明,通过车辆垂向振动分析模型和车辆模型参数,可以较好计算出车辆在软基过渡段行驶时的参数;软基过渡段为折线形式时,可以减少软基过渡段的差异沉降;通过对软基过渡段沉降值和沉降坡差的计算,得出软基过渡段的合理长度。

In order to implement the smooth transition of highway soft foundation and ordinary roadbed,through the establishment of vehicle vertical vibration analysis model,studied reasonable length of highway soft foundation transition section. Results show that through the analysis of the vertical vibration of vehicle model and vehicle model parameters,can calculate parameters when the vehicles are driven in soft ground transition section; When soft foundation transition section is broken line,can reduce the differential settlement of transition section of soft ground; Through the calculation of settlement value and the settlement difference of slope,concluded reasonable transition section length of soft ground.