水下混凝土灌注桩技术现在已经被广泛的应用在桥梁的施工当中.桥梁下部结构经常采用单桩单柱的结构形式,由于桩数较少,受力集中,负荷较大,桩身一旦发生严重缺陷很难采取补救措施,所以对大口径桥桩的成孔质量和灌注质量要求十分严格.%Underwater concrete pile technology is now widely used in the construction of the bridge. Bridge substructure frequently used singlecolumn structure of single pile,since the pile is less with stress concentration and larger load,it is difficult to take remedial measures in the event of a serious defect, therefore, there is a stringent quality requirement on hole quality of large diameter bridge piles and pouring.
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