高填方路基沉降有限元分析及现场监测

Finite Element Analysis and Field Monitoring of Settlement of High Fill Subgrade

为提升山区公路高填方路基的施工安全,文中利用Abaqus软件建立了有限元模型,分析不同位置及不同填料下路基沉降量的变化规律,并对施工现场进行监测。结果表明,高填方路基沉降量随路基填方高度的增加先快速增加后缓慢增加;计算点位D路基沉降量最为显著,M1填料路基沉降量最大;此外,路基沉降量监测值与模拟值较为接近,可为高填方路基现场施工提供参考。

In order to improve the construction safety of highway high-fill subgrade in mountainous areas,a finite element model was established by using Abaqus software to analyze the variation law of subgrade settlement under different positions of subgrade and different fillers,and the construction site was monitored.The results show that the settlement of high fill subgrade increases rapidly at first and then slowly with the increase of fill height.The settlement of the subgrade at the calculated point D is the most significant,and the settlement of the subgrade with M1 filler is the largest.In addition,the monitoring value of subgrade settlement is close to the simulated value,which can provide reference for the field construction of high-fill subgrade.