天津新杨北公路坑塘回填路基沉降计算方法研究

Study & Calculation on Settlement of Pit Backfill Subgrade for New Yangbei Rd.in Tianjin

天津市新杨北公路建设涉及到大量的坑塘回填,坑塘属人工开挖,土体应力历史发生变化,沉降量难以预估。通过对工程中典型的坑塘回填路基进行沉降监测,分析实测沉降值与理论计算值的区别,提出坑塘回填路基沉降估算经验方法,为道路设计路面标高控制及是否采取地基处理提供依据。

Tianjin New Yangbei Rd.construction involves a large number of pit backfill,due to pit belonging to artificial excavation and the soil stress history being changed,the subsidence is difficult to forecast.Through the settlement monitoring on the typical pit subgrade,the difference between the measured settlement value and the theoretical calculation one is analyzed,and the pit backfill subgrade settlement estimation experience method is put forward,which may provide a basis for the design of road elevation control and whether to take the foundation treatment measures.