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一、引言武汉长江大桥由于采用管柱钻孔法而修建成功,这种新的施工方法给深水河流修筑建筑物基础开辟了广阔的前途。现在湖北麻城县修建明山水库,采用连锁管柱作土壩的隔水墙,也起了有效的防渗作用。事实证明:管柱钻孔法不仅适用于桥梁工程,也可运用到水利工程上,特别是在深水中建筑基础时,管柱起了独特的作用。带有锁口的管柱,可以代替钢钣桩修建围堰。普通的钢钣桩,只能打入河底复盖层,不能打入岩层;而管柱不仅能穿
I. INTRODUCTION The successful construction of Wuhan Yangtze River Bridge by adopting the drilling method of columns and columns has opened up a promising future for the building of deep-water rivers. Now Macheng County, Hubei Province, the construction of Ming Shan Reservoir, the use of interlocking pipe for earth dam wall, also played an effective role in seepage. Facts have proved that the pipe string drilling method is not only suitable for bridge engineering, but also can be applied to water conservancy projects, especially in the deep water in the construction of the foundation, the pipe string played a unique role. With a locking column, you can replace the steel sheet pile construction cofferdam. Ordinary steel sheet pile, can only enter the river bottom cover, can not drive into the rock; and not only can wear