桩基取芯检测施工工艺  

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

作　　者：胡文华[1] 黄朝阳[1] 张晓东[1] 

机构地区：[1]福建省第四地质大队,宁德352100

出　　处：《福建地质》2002年第3期166-168,共3页Geology of Fujian

摘　　要：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.

关 键 词：桩基 施工工艺 钻孔垂直度 砼芯采取率 钻头 扩孔器 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]