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Ultra-deep rotary excavating pile concrete pouring construction method for preventing guide pipe cage clamping
The invention relates to the technical field of rotary excavating pile construction, and discloses an ultra-deep rotary excavating pile concrete pouring construction method for preventing guide pipe cage clamping. The method comprises the following construction steps that 1) a guide pipe is manufactured, and an annular protrusion is arranged on a guide pipe trunk section; 2) a pile hole is rotatably excavated, and a reinforcement cage is put down; 3) the guide pipe is connected, and a lengthened guide pipe set is formed; 4) the lengthened guide pipe set is put down to the designed elevation; 5) concrete is poured to the set elevation; and 6) the lengthened guide pipe set is lifted, and the guide pipe is dismounted. Through the above steps, when the lengthened guide pipe set is put down and lifted in the reinforcement cage, due to the fact that the outer diameter of the annular protrusion is larger than the diameter of connecting screw threads at the two ends of the guide pipe; and when the center axis of the lengthened guide pipe set deviates from the center axis of the pile hole, the part of the annular protrusion makes contact with the reinforcement cage in advance, the connecting screw threads at the two ends of the guide pipe can be effectively prevented from making contact with the reinforcement cage, scratching between the connecting screw threads and the reinforcement cage is avoided, and therefore the cage clamping accident is effectively avoided.
本发明涉及旋挖桩施工的技术领域，公开了防止导管卡笼的超深旋挖桩混凝土浇灌施工方法，包括以下施工步骤：1)制作导管：在导管主干段设置环形凸起；2)旋挖桩孔，下放钢筋笼；3)连接导管，形成接长导管组；4)下放接长导管组至设计标高；5)浇灌混凝土至设定标高；6)提升接长导管组并拆除导管；通过上述步骤，接长导管组在钢筋笼内下放和提升时，由于环形凸起的外径大于导管两端连接丝扣的直径，当接长导管组的中心轴偏离桩孔的中心轴，环形凸起的部分先行与钢筋笼接触，可以有效避免导管两端的连接丝扣触碰到钢筋笼，避免了连接丝扣与钢筋笼剐蹭，从而有效避免了卡笼事故的发生。
Ultra-deep rotary excavating pile concrete pouring construction method for preventing guide pipe cage clamping
The invention relates to the technical field of rotary excavating pile construction, and discloses an ultra-deep rotary excavating pile concrete pouring construction method for preventing guide pipe cage clamping. The method comprises the following construction steps that 1) a guide pipe is manufactured, and an annular protrusion is arranged on a guide pipe trunk section; 2) a pile hole is rotatably excavated, and a reinforcement cage is put down; 3) the guide pipe is connected, and a lengthened guide pipe set is formed; 4) the lengthened guide pipe set is put down to the designed elevation; 5) concrete is poured to the set elevation; and 6) the lengthened guide pipe set is lifted, and the guide pipe is dismounted. Through the above steps, when the lengthened guide pipe set is put down and lifted in the reinforcement cage, due to the fact that the outer diameter of the annular protrusion is larger than the diameter of connecting screw threads at the two ends of the guide pipe; and when the center axis of the lengthened guide pipe set deviates from the center axis of the pile hole, the part of the annular protrusion makes contact with the reinforcement cage in advance, the connecting screw threads at the two ends of the guide pipe can be effectively prevented from making contact with the reinforcement cage, scratching between the connecting screw threads and the reinforcement cage is avoided, and therefore the cage clamping accident is effectively avoided.
本发明涉及旋挖桩施工的技术领域，公开了防止导管卡笼的超深旋挖桩混凝土浇灌施工方法，包括以下施工步骤：1)制作导管：在导管主干段设置环形凸起；2)旋挖桩孔，下放钢筋笼；3)连接导管，形成接长导管组；4)下放接长导管组至设计标高；5)浇灌混凝土至设定标高；6)提升接长导管组并拆除导管；通过上述步骤，接长导管组在钢筋笼内下放和提升时，由于环形凸起的外径大于导管两端连接丝扣的直径，当接长导管组的中心轴偏离桩孔的中心轴，环形凸起的部分先行与钢筋笼接触，可以有效避免导管两端的连接丝扣触碰到钢筋笼，避免了连接丝扣与钢筋笼剐蹭，从而有效避免了卡笼事故的发生。
Ultra-deep rotary excavating pile concrete pouring construction method for preventing guide pipe cage clamping
防止导管卡笼的超深旋挖桩混凝土浇灌施工方法
FANG JIANGFENG (author) / ZHANG SIQI (author) / ZHANG XUAN (author) / JIANG LEI (author) / LIN WENJING (author)
2021-11-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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