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Construction method for forming screw pile through drilling of adjustable screw pile drill bit structure
The invention belongs to the technical field of screw cast-in-place piles, discloses a construction method for forming a screw pile through drilling of an adjustable screw pile drill bit structure, and aims to solve the problem that a large quality accident occurs due to the fact that a spiral screw pile cannot be formed when a hole wall of an existing screw pile drill bit is cut in a pebble soil layer and a strongly weathered rock stratum. The method comprises the steps that (1) a screw drill is used for driving a drill bit to conduct forward rotation drilling to form a pile hole; (2) concrete is poured into the pile hole, and the drill bit is lifted upwards while the concrete is poured into the pile hole; when the screw drilling machine upwards extracts the drill bit, the screw drilling machine drives the drill bit to rotate reversely, so that a spiral groove is formed in the inner wall of the pile hole through the drill bit; and (3) after concrete pouring is completed, a reinforcement cage is implanted into the concrete, the pile hole and the groove are filled with the concrete, and the screw cast-in-place pile is formed after the concrete is solidified.
本发明属于螺杆灌注桩技术领域，公开了一种可调式螺杆桩钻头结构钻进形成螺杆桩的施工方法，为了解决现有的螺杆桩钻头在卵石土层和强风化岩层中孔壁被切削无法形成螺旋状的螺杆桩而出现较大质量事故的问题。本发明包括（1）利用螺杆钻机带动钻头进行正向旋转钻进形成桩孔；（2）向桩孔内浇筑混凝土，在向桩孔内浇筑混凝土的同时向上提取钻头；螺杆钻机向上提取钻头的时候，螺杆钻机带动钻头反向旋转从而利用钻头在桩孔的内壁上形成呈螺旋状的沟槽；（3）混凝土浇筑完成之后向混凝土中植入钢筋笼，混凝土填充满桩孔和沟槽，待混凝土凝固后形成螺杆灌注桩。
Construction method for forming screw pile through drilling of adjustable screw pile drill bit structure
The invention belongs to the technical field of screw cast-in-place piles, discloses a construction method for forming a screw pile through drilling of an adjustable screw pile drill bit structure, and aims to solve the problem that a large quality accident occurs due to the fact that a spiral screw pile cannot be formed when a hole wall of an existing screw pile drill bit is cut in a pebble soil layer and a strongly weathered rock stratum. The method comprises the steps that (1) a screw drill is used for driving a drill bit to conduct forward rotation drilling to form a pile hole; (2) concrete is poured into the pile hole, and the drill bit is lifted upwards while the concrete is poured into the pile hole; when the screw drilling machine upwards extracts the drill bit, the screw drilling machine drives the drill bit to rotate reversely, so that a spiral groove is formed in the inner wall of the pile hole through the drill bit; and (3) after concrete pouring is completed, a reinforcement cage is implanted into the concrete, the pile hole and the groove are filled with the concrete, and the screw cast-in-place pile is formed after the concrete is solidified.
本发明属于螺杆灌注桩技术领域，公开了一种可调式螺杆桩钻头结构钻进形成螺杆桩的施工方法，为了解决现有的螺杆桩钻头在卵石土层和强风化岩层中孔壁被切削无法形成螺旋状的螺杆桩而出现较大质量事故的问题。本发明包括（1）利用螺杆钻机带动钻头进行正向旋转钻进形成桩孔；（2）向桩孔内浇筑混凝土，在向桩孔内浇筑混凝土的同时向上提取钻头；螺杆钻机向上提取钻头的时候，螺杆钻机带动钻头反向旋转从而利用钻头在桩孔的内壁上形成呈螺旋状的沟槽；（3）混凝土浇筑完成之后向混凝土中植入钢筋笼，混凝土填充满桩孔和沟槽，待混凝土凝固后形成螺杆灌注桩。
Construction method for forming screw pile through drilling of adjustable screw pile drill bit structure
一种可调式螺杆桩钻头结构钻进形成螺杆桩的施工方法
XU JIANXIAO (author) / HE FANMIN (author) / LI YAN (author) / DENG AN (author) / LUO ENHONG (author)
2022-11-18
Patent
Electronic Resource
Chinese
Prefabricated screw pile construction drilling tool and pile forming method
| European Patent Office | 2022
Engineering Index Backfile | 1933