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针对“一环”西线软基路段填土速度快、土层地质条件复杂、土体物理力学指标变异系数大等特点,采用瑞典条分法进行稳定性计算。根据计算所得的稳定性,在路堤填筑施工中,为防止填土速率过快,避免路基失稳的发生,必须确定表面沉降速率以控制填土速率,同时,确定超载预压时间的控制标准。
Aiming at the characteristics of fast filling speed, complex geological conditions of soil and large coefficient of variation of physico-mechanical indexes of soil in the west part of soft foundation road, the stability calculation is made by using the piecewise method of Sweden. According to the calculated stability, in the embankment construction, in order to prevent the filling rate too fast and avoid the instability of the subgrade, the surface subsidence rate must be determined to control the filling rate. Meanwhile, the control standard for determining the preloading time of overloading .