管桩复合地基在航道驳岸软基处理中的应用

复合地基由基体和增强体共同承担上部荷载作用，处理后的地基具有良好的工程特性和经济优势。在淤泥质土中常用水泥搅拌桩、碎石桩等柔性桩作复合地基，采用预制管桩等刚性桩作复合地基的案例较少。以丹金船闸航道驳岸软基处理方案研究为例，论述了驳岸软基处理及桩基选型的思路、复合地基设计参数，并结合现场试验与观测情况对参数选择进行分析，与深层搅拌桩复合地基处理方案进行比选，对类似工程项目的建设和标准规范的完善均有积极借鉴意义。

Application of pipe pile compound foundation in revetment soft foundation treatment

The compound foundation,which supports the upper load by both the matrix and the reinforcement,has good engineering characters and great economic advantages. In silty soil,the flexible piles,such as cement mixed piles and crushed stone piles are used for the compound foundation,but the rigid piles,like precast pipe piles,are seldom adopted. Taking the Danjin shiplock as the research object,this paper discusses the idea for revetment soft foundation treatment and foundation selection,and design parameters of compound foundation. Combining with the field test and observation,we analyze the parameter selection and carries out a comparison between the pipe pile compound foundation and the deep mixed pile compound foundation,to serve as reference for the construction and perfection of standards for similar engineering projects.