复合法预应力混凝土大直径管桩管节生产的裂缝调查及分析

Investigation and Analysis of Pipe Joint Crack of Compound Large-diameter Prestressed Concrete Pipe Pile

简述了复合法预应力混凝土大直径管桩的结构性能和生产工艺，通过管节裂缝的调查和分析，揭示了管节内壁裂缝的主要成因，并提出了减少或消除裂缝的技术措施。

The structural property and production technology of compound large-diameter prestressed concrete pipe pile are briefly introduced. Based on investigation andanalysis of pipe joint crack, the main reason of producing cracks at inner side of pipe jointis revealed and technical measures of reducing or eliminating cracks are put forward.