利用地下水下降时段对道路土基进行深层碾压

Reinforced Rolling to Decrease the Settlement of Roadbed When the Groundwater Lowering

通过对吉林省交通厅科技计划项目"桥头跳车防治技术及施工工艺的研究",和对长余高速公路实验路段的观测数据的分析,发现地下水活动对堆载预压土基沉降影响显著,在定量与定性分析的基础上,提出在地下水下降时段路堤下土基产生负压区的观点,进而提出在该时段增强碾压,加速桥头土基沉降,进而减少桥头工后差异沉降的施工方法。

Through studying the project - the prevention of bridge head bumping and crafts of construction of the Transportation Department of Jilin Province and analysing the data of the Changyu highway, a conclusion have been drawn that groundwater have more contribution to the soft roadbed＇ s settlement. Based on qualitative analysis, suggestions have been given that if we improve the rolling of the bridge head embankment and accelerate the settlement in comstruction when the groundwater level is lowering, the settlement will be decreased once the engineering is completed.