岩溶地区钻孔灌注桩施工关键技术

Key Construction Technology of Cast-in-situ Piles for Karst Zone

本文结合广东玉湛高速公路岩溶地区钻孔灌注桩施工中成孔施工工艺进行研究,分析了不同岩溶条件下钻孔灌注桩的成孔方法,总结岩溶地区钻孔灌注桩成孔过程中容易出现的问题及处理措施,提炼出岩溶地区钻孔灌注桩施工控制的关键点,为岩溶地区钻孔灌注桩施工提供参考。

By studying the drilling technology of cast-in-situ piles applying to Karst zone within the range of Guangdong Yuzhan highway,and analyzing the drilling methods of cast-in-situ piles applicable for different Karst conditions,the problems occurred in the above construction and the countermeasures are summarized in detail, which produces key control essentials for the construction of cast-in-situ piles in Karst zone.The research results will provide a reference for similar projects.