顶管施工引起海堤过大沉降的原因分析及补救措施研究

近年来顶管法已成为城市管线建设和改造的主要手段,特别在沿江、沿海地区进行顶管施工不可避免地要穿越海堤,施工期确保海堤安全,保证其结构稳定性及防洪御潮功能是非常关键的。为保证海堤工程安全,顶管施工应对工程进行现场沉降监测,分析海堤产生沉降的原因,过大的沉降要研究海堤的加固补救措施,提出适用的施工方案对其进行加固补救,对比加固前后的沉降数据,验证加固措施的可行性。研究成果对类似的工程具有一定的参考意义。

Analysis on Over Settlement of Sea Wall Caused by Pipe-jacking Construction and Study on Remedying Measures

In recent years,the pipe-jacking process has become the main means to construct and reconstruct the urban pipelines.It is very important to ensure the security of sea wall and to guarantee the structure stability and flood control and damp-proof function of sea wall during the pipe-jacking construction because of being inevitably to cross sea wall especially in the areas along the rivers and sea.In order to guarantee the security of sea wall engineering,it is necessary to carry out the monitor of field settlement during the pipe-jacking construction,and to analyze the settlement cause of sea wall.The reinforcing remedying measures is studied for the over-settlement sea wall,and the suitable construction scheme is put forward for its remedying reinforcement.The comparison of the settlement data before and after reinforcement validates that the reinforcing measures is feasible.The studying result is refereed for the similar projects.