A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prefabricated hollow pile for post-grouting and post-grouting construction method
The invention provides a prefabricated hollow pile for post-grouting and a construction method of post-grouting. The prefabricated hollow pile comprises a pile head and a plurality of prefabricated hollow pile bodies connected in sequence; a pile tip grouting steel pipe is arranged in the pile head, a pile body grouting steel pipe is arranged in the prefabricated hollow pile body, and the prefabricated hollow pile body is detachably connected with the pile tip grouting steel pipe; the adjacent prefabricated hollow pile bodies are connected through the pile body end plates, and the pile body grouting steel pipes are installed on the pile body end plates through the one-way check valves. The pile tip grouting steel pipe is arranged on the outer side of an existing pile tip in advance, the problem that a grouting opening is prone to being blocked due to the fact that a hole is formed in the pile tip in advance is avoided, a pile tip reinforcing body can be formed, meanwhile, the pile body grouting steel pipe can be recycled, pile hole and pile side grouting is achieved in the recycling process, cost is saved, and compared with pile seam flooding, the pile tip grouting steel pipe can be recycled. And the pile side friction force and the overall pulling resistance of the pile body are further enhanced.
本发明提出了一种后注浆用的预制空心桩以及后注浆的施工方法，预制空心桩包括桩头以及若干依次连接的预制空心桩体；所述桩头内布设有桩尖注浆钢管，所述预制空心桩体内设置有桩体注浆钢管，且与桩尖注浆钢管可拆卸连接；相邻预制空心桩体之间通过桩体端板连接，且桩体注浆钢管通过单向止逆阀安装在桩体端板上。本发明在现有的桩尖的外侧预先设置桩尖注浆钢管，避免在桩尖预开孔导致注浆口易堵塞的问题，能够成型桩端加强体，同时，桩体注浆钢管可回收且在回收过程中实现桩孔和桩侧注浆，不仅节约了成本，相较于依靠桩缝泛浆，进一步加强了桩侧摩擦力以及桩体的整体抗拔力。
Prefabricated hollow pile for post-grouting and post-grouting construction method
The invention provides a prefabricated hollow pile for post-grouting and a construction method of post-grouting. The prefabricated hollow pile comprises a pile head and a plurality of prefabricated hollow pile bodies connected in sequence; a pile tip grouting steel pipe is arranged in the pile head, a pile body grouting steel pipe is arranged in the prefabricated hollow pile body, and the prefabricated hollow pile body is detachably connected with the pile tip grouting steel pipe; the adjacent prefabricated hollow pile bodies are connected through the pile body end plates, and the pile body grouting steel pipes are installed on the pile body end plates through the one-way check valves. The pile tip grouting steel pipe is arranged on the outer side of an existing pile tip in advance, the problem that a grouting opening is prone to being blocked due to the fact that a hole is formed in the pile tip in advance is avoided, a pile tip reinforcing body can be formed, meanwhile, the pile body grouting steel pipe can be recycled, pile hole and pile side grouting is achieved in the recycling process, cost is saved, and compared with pile seam flooding, the pile tip grouting steel pipe can be recycled. And the pile side friction force and the overall pulling resistance of the pile body are further enhanced.
本发明提出了一种后注浆用的预制空心桩以及后注浆的施工方法，预制空心桩包括桩头以及若干依次连接的预制空心桩体；所述桩头内布设有桩尖注浆钢管，所述预制空心桩体内设置有桩体注浆钢管，且与桩尖注浆钢管可拆卸连接；相邻预制空心桩体之间通过桩体端板连接，且桩体注浆钢管通过单向止逆阀安装在桩体端板上。本发明在现有的桩尖的外侧预先设置桩尖注浆钢管，避免在桩尖预开孔导致注浆口易堵塞的问题，能够成型桩端加强体，同时，桩体注浆钢管可回收且在回收过程中实现桩孔和桩侧注浆，不仅节约了成本，相较于依靠桩缝泛浆，进一步加强了桩侧摩擦力以及桩体的整体抗拔力。
Prefabricated hollow pile for post-grouting and post-grouting construction method
一种后注浆用的预制空心桩以及后注浆的施工方法
WEI PENG (author) / GAO QIANG (author) / LI XINXIN (author) / ZHOU CONG (author) / YU JIANJIN (author) / QUAN CHENG (author) / SUN BOWEN (author) / WANG XIAOYAN (author)
2023-10-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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