干作业成孔灌注桩是指不用泥浆和套管护壁的情况下,用人工钻具或机械钻成孔,下钢筋笼、浇混凝土成桩。该工作主要优点是不同循环介质,噪音和振动小,对环境影响小;施工速度快,设备简单,易操作;由于干做业成孔,混凝土质量能得到较好的控制。 Drilling into the hole into the pile is the case without mud and casing wall, with artificial drilling or mechanical drilling hole, under the steel cage, pouring concrete into a pile. The main advantage of this work is that different circulating mediums have small noise and vibration and little impact on the environment. The construction speed is quick, the equipment is simple and easy to operate, and the quality of concrete can be well controlled due to the dry-industry into holes.