旋挖成孔灌注桩的施工工艺及质量控制

The construction technology of rotary excavating core cast-in-place pile and the quality control

结合工程实践,对旋挖钻孔工艺特点做了介绍,重点提出了控制钻斗升降速度,关注钻斗与孔壁间水动力状态,减少泥水对孔壁的竖向冲刷及粘附作用,从而确保成孔质量。

Combined with the project practice, it introduces the characters of rotary excavating drilling technology, mainly puts forward the control of drilling bucket lifting speed, mainly on the water dynamic state of drilling bucket and core wall, decreasing the vertical scouting and adherence action of mud water to core wall, to assure the core forming quality.