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1 概论 近二三年,在北京等地区,广泛采用了一种新的桩工艺法——钻孔压灌超流态砼桩。该项技术采用优化合理的结构和简便实用的施工方法,克服了原有各种钻孔桩施工中存在的缺点和不足,从根本上解决了各种不良地质条件下基础处理的难题。 该项技术的施工工艺,是采用特制的长螺旋钻机钻孔至设计深度后停钻,提升钻杆的同
1 Introduction In the past two or three years, a new pile technology method has been widely used in Beijing and other regions—drilling and pressure-feeding super-flow piles. This technology adopts an optimized and reasonable structure and a simple and practical construction method, which overcomes the shortcomings and deficiencies in the existing construction of various bored piles and fundamentally solves the problems of basic treatment under various adverse geological conditions. The construction technology of this technology is to use a special long auger drill to drill to the design depth and stop drilling to increase the drill pipe