树根桩类似于小直径的钻孔灌注桩,直径通常为150mm至200mm,最大的300mm,桩长一般小于30m,根据受力状况可作成垂直桩,也可作成斜桩。在道路桥梁工程中,树根桩可用作基坑围护结构:可用作侧向支护,保护地下管线和临近建筑物;又可用作抗渗帷幕,防止出现流砂。简要论述了树根桩的一些基本概念,同时,还针对树根桩的设计及其施工工艺进行了探讨。 The root pile is similar to a small diameter bored pile with a diameter of 150mm to 200mm and a maximum of 300mm. The pile length is generally less than 30m. Vertical piles can be made according to the stress conditions, and can also be made as inclined piles. In the road and bridge project, the root stump can be used as the foundation pit enveloping structure: it can be used as lateral support to protect underground pipelines and adjacent buildings; and can also be used as anti-seepage curtain to prevent sand from flowing. This paper briefly discusses some basic concepts of root stump, meanwhile, it also discusses the design of root stump and its construction technology.