深水区钻孔灌注桩施工常见问题处理方法

Treatment of common problems in deep-water area bored pile construction

深水钻孔灌注桩在施工中经常会发生护筒变形、混凝土浇注中断的现象,从而影响到桩身的施工质量。结合录安洲夹江桥的桩基处理经历,并通过总结其他工程的施工经验,对钢护筒的方案进行优化处理,采用水下切割工艺处理了钢护筒变形问题,对护筒内接桩进行了理论验算并成功予以实施,成功解决了工程难题。

During the construction of deep-water drilling pile,the deformation of steel sleeve and suspension of concrete casting happens very often,which affect the construction quality of the pile body.Based on the experience of pile foundation treatment in Anzhou Jiajiang bridge and other projects,we optimize the treatment methods for the steel sleeve.Through the underwater cutting processing we solve the deformation problem of the steel sleeve.The pile connection in the sleeve is implemented after theoretical check,and the engineering problems are solved.