锦屏3^#营地液化地基振冲碎石桩加固处理技术

Vibro-replacement Stone Column Technique on Liquefied Foundation in No.3 Camp of Jingping Project

在锦屏水电站3#营地基础加固中,应用振冲碎石桩法加固深厚粉细砂层地基,有效提高地基承载力,明显消除了地基土的可液化性,减少基础沉降量和不均匀沉降,满足修建多层建筑的设计要求。通过该工程实例简要介绍了振冲碎石桩加固地基的设计及施工方案、施工工艺、质量控制以及质量检测结果,实践表明采用振冲碎石桩加固可液化地基具有快速、方便、可靠的特点。

The vibro-replacement stone column technique was successfully applied to the foundation reinforcement in No. 3 camp of Jinping Project. After using the technique, the bearing capacity of the foundation was improved, the foundation liquation was eliminated obviously, and the settlement quantity and un-uniformity settlement value were reduced. By an illustration, the purpose, the design and construction scheme, the construction technique, the quality control and quality detection of vibro-replacement stone column were all introduced briefly. It was proved by practice that vibro-replacement stone column technique is characterized by good efficiency, convenient construction and reliable quality.