摘要
在砂层摩阻力不够的情况下，采用凹凸型钻孔灌注桩施工提高单桩承载力，获得成功。介绍了凹凸型钻孔灌注桩的设计、施工方法及应用效果。
In the case of insufficient friction resistance in sandy formation,the single pile bearing capacity is successfully increased by forming a concaveconvex type bored pile. The design,construction andresults of the concave-convex bored pile are described.
出处
《探矿工程》
1996年第6期30-31,41,共3页
Exploration Engineering(Drilling & Tunneling)
关键词
凹凸型
钻孔灌注桩
打点法
施工技术
Concave-convex bored pile concave-convex forming with controlled bit weight at high rotary speed marking method
