深水淤泥地质条件下钻孔桩干接桩施工技术

Dry Connection Pile Construction Technology of Cast-in-situ Pile under Deepwater Silt Geological Condition

该文重点介绍某特大桥钻孔桩施工中由于混凝土供应中断造成桩体混凝土未灌注到设计桩顶标高,采取特殊施工措施在深水、淤泥地质条件下成功地将桩体接高到设计标高的施工方法。该施工方法的成功使用,对钻孔桩质量处理进行了一些探索,为今后在桥梁钻孔桩工程中遇到类似问题桩施工处理提供了借鉴。

This paper focuses introduction on the construction method and the special construction measures of successfully connecting the pile to the design elevation under the deepwater and silt geological conditions because of the concrete supply disruption in the cast-in-situ pile construction of a super large bridge to cause the pile concrete not to cast to the design elevation of pile top. The successful use of this construction method gropes for the treatment of cast-in-situ quality and provides the reference for the treatment of the fault pile in the cast-in-situ pile engineering construction of bridge in the future.