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Construction process for constructing lock catch steel pipe pile cofferdam on steep slope hard rock riverbed
The invention discloses a construction process for constructing a lock catch steel pipe pile cofferdam on a steep slope hard rock riverbed, relates to the technical field of bridge construction, and aims to solve the problem that an existing steel pipe pile cofferdam for a complex terrain is difficult to construct. The front layer, the rear layer, the upper layer and the lower layer serve as guide frames; the position of the steel pipe pile is divided into four areas, each area is constructed in sequence, after the lock catch steel pipe in each area is driven, the platform supporting steel pipe and the pile foundation pile casing are reinforced to be in parallel connection, and then the platform panel is restored. In order to solve the problem that lock catch steel pipe piles adopted in weathered riverbed geology in an inclined rock surface of a deep water shallow covering layer cannot be inserted into or are difficult to be inserted into a rock stratum, a hole guiding mode combining a down-the-hole drill and a rotary drilling drill is innovatively adopted, a reinforcement cage is lowered, concrete is poured to form piles, ring beams and angle braces are arranged, and then the safety and stability of an operation space of an operator are guaranteed.
本发明公开了一种陡坡硬岩河床上锁扣钢管桩围堰施工的施工工艺，涉及桥梁施工技术领域，旨在解决现有针对复杂地型钢管桩围堰施工难的问题，其技术方案要点是：在作业平台的钢护筒侧壁上焊接牛腿，然后焊接H60型钢，前、后、上、下两层作为导向架；将钢管桩位置分为四个区域，每个区域先后施工，完成各区域锁扣钢管打设后，加固与平台支撑钢管及桩基护筒平联，再恢复平台面板。本工艺针对深水浅覆盖层的斜岩面中风化河床地质采用锁扣钢管桩无法或难以插打入岩层的问题，创新采取潜孔钻与旋挖钻相结合的引孔方式，下放钢筋笼并浇筑混凝土成桩，设置圈梁、角撑，进而保证作业人员的作业空间安全性、稳定性。
Construction process for constructing lock catch steel pipe pile cofferdam on steep slope hard rock riverbed
The invention discloses a construction process for constructing a lock catch steel pipe pile cofferdam on a steep slope hard rock riverbed, relates to the technical field of bridge construction, and aims to solve the problem that an existing steel pipe pile cofferdam for a complex terrain is difficult to construct. The front layer, the rear layer, the upper layer and the lower layer serve as guide frames; the position of the steel pipe pile is divided into four areas, each area is constructed in sequence, after the lock catch steel pipe in each area is driven, the platform supporting steel pipe and the pile foundation pile casing are reinforced to be in parallel connection, and then the platform panel is restored. In order to solve the problem that lock catch steel pipe piles adopted in weathered riverbed geology in an inclined rock surface of a deep water shallow covering layer cannot be inserted into or are difficult to be inserted into a rock stratum, a hole guiding mode combining a down-the-hole drill and a rotary drilling drill is innovatively adopted, a reinforcement cage is lowered, concrete is poured to form piles, ring beams and angle braces are arranged, and then the safety and stability of an operation space of an operator are guaranteed.
本发明公开了一种陡坡硬岩河床上锁扣钢管桩围堰施工的施工工艺，涉及桥梁施工技术领域，旨在解决现有针对复杂地型钢管桩围堰施工难的问题，其技术方案要点是：在作业平台的钢护筒侧壁上焊接牛腿，然后焊接H60型钢，前、后、上、下两层作为导向架；将钢管桩位置分为四个区域，每个区域先后施工，完成各区域锁扣钢管打设后，加固与平台支撑钢管及桩基护筒平联，再恢复平台面板。本工艺针对深水浅覆盖层的斜岩面中风化河床地质采用锁扣钢管桩无法或难以插打入岩层的问题，创新采取潜孔钻与旋挖钻相结合的引孔方式，下放钢筋笼并浇筑混凝土成桩，设置圈梁、角撑，进而保证作业人员的作业空间安全性、稳定性。
Construction process for constructing lock catch steel pipe pile cofferdam on steep slope hard rock riverbed
一种陡坡硬岩河床上锁扣钢管桩围堰施工的施工工艺
BAO HAN (author) / QIAN XIAOAN (author) / MA CHAOHUI (author) / YI FANSHUN (author) / WEN KE (author) / LI ZHENGGANG (author)
2024-07-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2024
| European Patent Office | 2024
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