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A platform for research: civil engineering, architecture and urbanism
Pipe pile splicing, bottom expanding and diameter expanding integrated device and construction method
The invention discloses a tubular pile splicing, bottom expanding and diameter expanding integrated device and a construction method, and belongs to the field of building construction. In the integrated device, multiple sections of tubular piles are connected through expanding joints and tubular pile joints and then are driven into a soil layer, then expanding devices are adopted to sequentially unfold the expanding joints to form expanded diameters, then a grouting machine is connected with a bag type bottom expanding device through a grouting pipe, and after a certain amount of grout is injected, the grout is solidified to form an expanded bottom. The pile side resistance and the pile end resistance can be improved, the pile foundation bearing capacity can be greatly improved, particularly, the uplift bearing capacity mainly based on the pile side friction resistance can be remarkably improved, and therefore the pile length and the pile number can be reduced, and the engineering cost is reduced.
本发明公开了一种管桩接桩扩底扩径一体化装置及施工方法，属于建筑施工领域。该一体化装置中，多节管桩通过扩径接头和管桩接头连接后打入土层，再采用扩孔器依次将扩径接头展开形成扩径，然后注浆机通过注浆管连接囊式扩底装置，注入一定量的浆液后凝固形成扩底。本发明可以提高桩侧阻力和桩端阻力，可大幅度提高桩基承载能力，特别是以桩侧摩阻力为主的抗拔承载力可以显著提高，因此可减少桩长和桩数，从而降低工程成本。
Pipe pile splicing, bottom expanding and diameter expanding integrated device and construction method
The invention discloses a tubular pile splicing, bottom expanding and diameter expanding integrated device and a construction method, and belongs to the field of building construction. In the integrated device, multiple sections of tubular piles are connected through expanding joints and tubular pile joints and then are driven into a soil layer, then expanding devices are adopted to sequentially unfold the expanding joints to form expanded diameters, then a grouting machine is connected with a bag type bottom expanding device through a grouting pipe, and after a certain amount of grout is injected, the grout is solidified to form an expanded bottom. The pile side resistance and the pile end resistance can be improved, the pile foundation bearing capacity can be greatly improved, particularly, the uplift bearing capacity mainly based on the pile side friction resistance can be remarkably improved, and therefore the pile length and the pile number can be reduced, and the engineering cost is reduced.
本发明公开了一种管桩接桩扩底扩径一体化装置及施工方法，属于建筑施工领域。该一体化装置中，多节管桩通过扩径接头和管桩接头连接后打入土层，再采用扩孔器依次将扩径接头展开形成扩径，然后注浆机通过注浆管连接囊式扩底装置，注入一定量的浆液后凝固形成扩底。本发明可以提高桩侧阻力和桩端阻力，可大幅度提高桩基承载能力，特别是以桩侧摩阻力为主的抗拔承载力可以显著提高，因此可减少桩长和桩数，从而降低工程成本。
Pipe pile splicing, bottom expanding and diameter expanding integrated device and construction method
一种管桩接桩扩底扩径一体化装置及施工方法
WANG LEI (author) / KUANG XINXIN (author) / XU XIAOWEI (author) / LU WENZHE (author) / ZHU LIWEI (author)
2023-03-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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