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2.2 现场打桩现场打桩有很多种施工方法,这里仅就—般使用较多,且具有一定代表性的施工方法加以说明.2.2.1 削孔机械钻孔灌注式钻孔机用摇动装置使套管转动,同时用千斤顶将套管压入地基,为防止产生地基坍塌,采用锤式抓斗挖掘大口径孔,在孔中制作钢筋水泥砼桩.卡尔威尔德式钻孔机(锅锥式钻孔机)该机用卡车或履带车运载,用方钻杆或凯氏拨叉驱动钻孔锥,钻削砂土,在掘孔中制作钢筋水泥砼桩.
2.2 Site piling There are many construction methods for piling on the site. It is only used as a general method and has a representative construction method to illustrate. 2.2.1 Shaving machine Shaft drilling machine Turn, while using the jack to press the casing into the ground, in order to prevent the foundation from collapsing, use the hammer grab to excavate the large-diameter hole, and make the reinforced concrete pile in the hole. Carl Weill Drilling Machine (pot cone drill) Hole machine) This machine is carried by truck or caterpillar. Driving the drilling cone with kelly or Kazi fork, drilling sand, making reinforced concrete piles in the hole.