本文依托贵惠高速公路K4+045~K4+177段软基的工程实际，对沉降及水平位移监测数据进行了分析。分析了在整个填筑过程中，路基的沉降及水平位移变化规律，得出控制标准。从而指导软土路基填方施工，以保证工程质量、节省施工成本，并对其它类似山区公路建设具有参考价值。然后将实测结果与理论计算结果对比分析，发现理论计算结果大于实测结果。说明在整个填筑过程中，以上述控制标准进行填方施工，没有明显的剪切破坏、整体侧向滑动等现象。最后运用极限平衡法对路基的整体稳定性进行验算分析，分别计算了天然和饱水两种工况下的稳定性系数。结果也表明在整个填筑过程中，路基的整体稳定性较好。%In this paper, based on the engineering practice, the monitoring data of settlement and horizontal displacement were analyzed to obtain the control standards to guide the fill construction of soft soil subgrade. Then the measured results and theoretical calculation results were compared, which showed that the theoretical calculation results was greater than the measured ones. There were no obvious shear failure and overall lateral sliding phenomenon. The stability coefficients of the natural and full of water conditions were calculated by limit equilibrium method to check the overall stability of the subgrade, and the results also showed that the overall stability of the subgrade was better in the whole filling process.
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