大型浮坞门沉箱预制技术

Caisson Prefabrication Technology for Large Floating Dock Gate

大型浮坞门是深中通道桂山预制场二次舾装区改造的重要组成部分,结构尺寸为83.0 m×25.2 m×29.1 m,是当时国内最大的混凝土沉箱结构之一。通过采用多种不同的施工工艺,使其满足止水、多次起浮、横移等特殊功能要求。此施工方法为类似大型沉箱结构施工的典范,可大力推广。

As an important part of the 2nd outfitting area reconstruction of Guishan precast yard in deep-middle passage,the large floating dock gate is one of the largest concrete caisson structures in China,with the size of 83.0 m×25.2 m×29.1 m.The above caisson structure is of special functions such as water-stop,floating repeatedly and transverse shifting by adopting different construction technologies.The construction method can be promoted greatly as a model for similar large caisson structure.