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广州丫髻沙大桥部分人工挖孔灌注桩 ,因其钢护筒变形减少了桩基有效截面 ,且使钢筋笼无法下放 ;在采用混凝土旋喷帷幕工艺进行维护处理失败后 ,最终采用冻结法进行维护处理 ,并获得圆满成功
Guangzhou Yajisha Bridge part of the artificial digging pouring pile, because of the deformation of the steel casing to reduce the effective section of the pile, and the steel cage can not be decentralized; in the use of concrete spin curtain curtains after the failure of the maintenance process, the final freezing method for maintenance Deal with and be successful