水中钻孔灌注桩施工质量通病及其防治措施

Common Quality Defects and Prevention Measures in Construction of Water Bored Cast-in-place Piles

钻孔灌注桩因其承载力高、施工噪声与振动小、桩径与地质适应性强等特点,在工程中得到了越来越多的应用。依托某深水桥梁桩基工程,从钢护筒施工、钻进施工、钢筋笼制作与安装、混凝土灌注成桩等方面,介绍了水中钻孔灌注桩施工质量通病的成因及其防治措施,可为提高水中钻孔灌注桩施工水平提供借鉴和参考。

Because of its high bearing capacity,low construction noise and vibration,and strong adaptability of pile diameter to geology,the bored cast-in-place pile has been used more and more in the projects.Relying on a deep water bridge pile foundation project,the causes and prevention measures of common quality defects in the construction of water bored cast-in-place pile from the aspects of steel casing construction,drilling construction,fabrication and installation of steel cage,concrete pouring into piles,etc.are introduced,which can provide the references for improving the construction level of water bored cast-in-place pile.