大直径坚硬岩层人工挖孔桩成孔施工技术

Construction Technology of Manual Hole-digging Pile in Large Diameter Hard Rock Layer

随着现代建筑施工技术的发展,桩的施工方式已呈多样化,出现冲孔桩,旋挖桩等施工机具,施工工艺也越来越成熟,因此,在2003年广东省建设厅发文将人工挖孔桩列为限制使用桩型.但因其人工挖孔桩施工过程直观,成桩质量容易控制,人工挖孔桩仍为建设和设计单位钟爱的桩型之一,现在许多项目仍在使用。经过多年发展,人工挖孔桩的施工工艺也不断地在完善,不断改进,安全性和环保性也已大幅提高。

With the development of modern construction technology,the construction methods of piles have been diversified.There are punching piles,rotary digging piles and other construction tools,and the construction technology is becoming more and more mature.Therefore,in 2003,the Guangdong Provincial Construction Department issued a paper to classify manual digging piles as restricted-use piles.However,over the years,because of its intuitive construction process and easy control of pile quality,manual excavation pile is still one of the favorite pile types of construction and design units,and now many projects are still in use.After years of development,the construction technology of manual digging piles has been constantly improved,and the safety and environmental protection have been greatly improved.