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Construction method of long auger drilling guncreting expanded bore pile
The invention relates to a construction method of a long auger drilling guncreting expanded bore pile, and belongs to the technical field of pile foundation construction. The construction method comprises the following steps that S1, a straight hole is drilled; S2, a bottom expansion drill bit carries out expansion construction on an expansion head at the pile end; S3, concrete is poured into a pile hole through drill rods and the bottom expansion drill bit in a pressure manner, after pouring of a bottom expansion hole part is completed, the bottom expansion drill bit shifts up and down, and concrete on the bottom expansion hole part is stirred again; S4, the bottom expansion drill bit is closed, a drill is lifted up, and concrete is poured into the pile hole continuously in a pressure manner till the drill is lifted to the ground; S5, a vibrator is used for placing a reinforcement cage into the pile hole; and S6, after pile forming, maintaining is carried out, and checking is carriedout. The construction method has the effects that construction is convenient, stability between the expanded bore pile and soil is enhanced, and the bearing capacity of the expanded bore pile is guaranteed.
本发明涉及一种长螺旋钻孔压灌混凝土扩底桩施工方法，属于桩基施工的技术领域，其步骤如下：S1，钻直孔；S2，扩底钻头扩张施工桩端扩大头；S3，经钻杆以及扩底钻头朝桩孔内压灌混凝土，并浇筑完扩底孔部分后，扩底钻头上下位移，对扩底孔部分混凝土进行复搅；S4，扩底钻头合拢，朝上提钻，并持续朝桩孔内压灌混凝土，直至提钻至地面；S5，利用振动器朝桩孔内安放钢筋笼；S6.成桩后进行养护，并进行检验。本发明具有方便施工，增强扩底桩与土壤之间稳定性，保证扩底桩承载力的效果。
Construction method of long auger drilling guncreting expanded bore pile
The invention relates to a construction method of a long auger drilling guncreting expanded bore pile, and belongs to the technical field of pile foundation construction. The construction method comprises the following steps that S1, a straight hole is drilled; S2, a bottom expansion drill bit carries out expansion construction on an expansion head at the pile end; S3, concrete is poured into a pile hole through drill rods and the bottom expansion drill bit in a pressure manner, after pouring of a bottom expansion hole part is completed, the bottom expansion drill bit shifts up and down, and concrete on the bottom expansion hole part is stirred again; S4, the bottom expansion drill bit is closed, a drill is lifted up, and concrete is poured into the pile hole continuously in a pressure manner till the drill is lifted to the ground; S5, a vibrator is used for placing a reinforcement cage into the pile hole; and S6, after pile forming, maintaining is carried out, and checking is carriedout. The construction method has the effects that construction is convenient, stability between the expanded bore pile and soil is enhanced, and the bearing capacity of the expanded bore pile is guaranteed.
本发明涉及一种长螺旋钻孔压灌混凝土扩底桩施工方法，属于桩基施工的技术领域，其步骤如下：S1，钻直孔；S2，扩底钻头扩张施工桩端扩大头；S3，经钻杆以及扩底钻头朝桩孔内压灌混凝土，并浇筑完扩底孔部分后，扩底钻头上下位移，对扩底孔部分混凝土进行复搅；S4，扩底钻头合拢，朝上提钻，并持续朝桩孔内压灌混凝土，直至提钻至地面；S5，利用振动器朝桩孔内安放钢筋笼；S6.成桩后进行养护，并进行检验。本发明具有方便施工，增强扩底桩与土壤之间稳定性，保证扩底桩承载力的效果。
Construction method of long auger drilling guncreting expanded bore pile
一种长螺旋钻孔压灌混凝土扩底桩施工方法
CAO KAIWEI (author) / LIU JIANWEN (author) / NIE KAI (author) / FENG SHANGTAO (author) / LUO PENG (author) / YAO SHI (author)
2020-08-14
Patent
Electronic Resource
Chinese
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