桩基取芯检测施工工艺

On Working Technique of Coring and Detection in the construction of the Pile Foundation

介绍了福宁高速公路部分高架桥跨海大桥桩基钻探取芯检测施工工艺 ,研究采用了 89mm套管作钻杆 ,单动双管钻具钻进 ,从而保证了钻孔垂直度及砼芯采取率的较高质量要求。

The paper focuses on the discussion of working technique of coring and detection in the construction of some pile foundation of the sea-spanning bridge which is one part of Fu'an Express Highway. The technique is to use the 89-mm-wider socket tubes as drilling rods and make holes by the single-action twin-pipe drilling tools, which can ensure the perpendicularity of boreholes and the percentage recovery of concrete cores in the construction of bridge piers.