灌注桩系是指在工程现场通过机械钻孔、钢管挤土或人力挖掘等手段在地基土中形成桩孔,并在其内放置钢筋笼、灌注混凝土而做成的桩,依照成孔方法不同,灌注桩又可分为沉管灌注桩、钻孔灌注桩和挖孔灌注桩等几类。钻孔灌注桩在软土地基处理中应用十分广泛,但因属隐蔽工程,成桩后质量检查比较困难,且由于软土的特殊性质,经常会出现一些质量问题。 Pouring pile system refers to the pile at the project site by mechanical drilling, squeezing steel pipe or manual excavation and other means in the formation of pile holes, and placed in the reinforced cage cage, made of concrete piles, in accordance with the hole forming method is different , Bored pile can be divided into the sinking bored pile, bored pile and digging bored pile and other categories. Bored piles are widely used in the treatment of soft soil foundation. However, due to hidden engineering, quality inspection after pile filling is more difficult, and due to the special nature of soft soil, some quality problems often occur.