冲(钻)孔灌注桩后注浆技术在岩溶地区的应用

The Application of Post-grouting Technique for Bored Piles in Karst Region

通过岩溶地区某高层建筑桩基施工的工程实例,介绍了冲(钻)孔灌注桩后注浆技术的加固原理,结合工程实践详细阐述了桩后注浆设计方案、注浆材料、注浆参数、注浆工艺和注浆时的异常情况及处理措施。结果表明,采用冲孔灌注桩后注浆技术可取得良好的加固效果。

Through engineering examples in the pile foundation construction of a high-rise building in karst region, this paper introduced the consolidating principle of post-grouting technique for boredpiles. Combining with engineering practice, it illustrated the design of post-grouting piles, grouting process, grouting materials, grouting parameters, the abnormal situation and handling measures when grouting. The results showed that post-grouting technique for bored piles can achieve good reinforcement effect and good technical effect.