冲孔取土灌注桩是一种使用简单的机具和独特的工艺进行施工的现场灌注桩。它是十几年前湖南省建筑业的一项创新。一经问世,各地争相采用,发展迅速,现在已广泛用作各种建筑物的基础。它的施工过程和一般现场灌注桩相似,即:桩机就位→打套管→成孔→下钢筋骨架→灌注混凝土和拔套管。这种工 The punching and soil-drilling pile is a kind of on-site cast-in-place pile with simple machine and unique technology. It is an innovation in the construction industry in Hunan Province more than a decade ago. As soon as it was published, all regions competed for one another and developed rapidly. Now it has been widely used as the basis for various buildings. Its construction process is similar to that of ordinary cast-in-situ piles, namely: pile machine is in place → casing is opened → hole is formed → under steel frame → poured concrete and casing is removed. This kind of work