滨海填石人工岛路基处理及变形监测

路基变形控制是滨海地区人工岛岛内道路建设的重难点。文中以某海岸填石人工岛环岛路工程为依托,提出其路基处理方案,并进行为期近1年的路基沉降和水平位移监测。结果表明,对于填土厚度高达17 m的填石人工岛路基工程,采用强夯法处理效果良好,处理90 d内,变形速率可达路堤连续填筑标准;处理300 d后,路基平均沉降量143 mm,平均水平位移37 mm,变形速率分别为0.2 mm/d和0.04 mm/d,路基变形可控且趋于稳定。

Subgrade Treatment and Deformation Monitoring of Coastal Rockfill Artificial Island

The construction of artificial islands in the coastal area can bring huge social and economic benefits,but pavement constructed in artificial islands faces the problem of controlling subgrade deformation.A subgrade treatment solution was proposed for the Huandao Road project in the rock-filled artificial island.Then several sensors were used to monitor the subgrade settlement and horizontal displacement for nearly one year.Results show that,for the rock fill artificial island with a filling thickness of 17 m,the subgrade treatment by dynamic compaction method performs well:Within 90 days after treatment,the deformation rate can reach the continuous filling standard of the embankment;After 300 days of treatment,the average settlement of the subgrade is 143 mm,the average horizontal displacement is 37 mm,and the deformation rates are 0.2 mm/d and 0.04 mm/d,respectively.The deformation of the subgradeis controlled and tends to be stable.