全回转全荤桩钻孔咬合桩施工技术

Construction Technology of the All-rotation and All-reinforcement Drilling Occlusive Pile

介绍了全回转、全荤桩钻孔咬合桩施工技术及其在上海地铁施工中的应用。新工艺与原一素一荤桩间隔的老工艺相比,具有桩身垂直度佳、围护止水效果好,开挖后桩身刚度大、抵抗变形能力强的特点,更加适合于环境保护要求高的深基坑围护工程。

In this article, authors introduce something about all-rotation and all-reinforcement drilling occlusive pile, such as the construction technology and its application in the deep foundation pit at a Shanghai subway station. Because of the characteristics of better verticality, water-proof and rigidity, the new structure is superior than the outdated shoring system consists of mixed reinforced and unreinforced piles. The new structure is more suitable for the deep foundation pit with strict requirement of protecting the environments.