Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rotary self-retaining wall pore-forming cast-in-place pile drill bit and drilling method
The invention relates to the technical field of constructional engineering, in particular to a rotary self-retaining wall pore-forming cast-in-place pile drill bit and a drilling method. A rotary self-retaining wall hole-forming cast-in-place pile drill bit comprises a main drill part, a drill bit body is arranged at the lower end of the main drill part, and the outer wall of the main drill part is sleeved with a rotatable retaining wall outer barrel; a convex part is arranged on the inner wall of the protective wall outer cylinder; the outer wall of the main drill part is provided with a groove used for being clamped into the protruding part to limit the rotation range of the protection wall outer cylinder. Notches are distributed in the protective wall outer cylinder, and blades capable of turning over transversely are arranged in the notches; the main drill part is provided with a pushing piece used for controlling the blades to be opened and closed. Grout outlet holes for outputting concrete grout and liquid outlet holes for outputting an accelerator are formed in the blades; a mud inlet hole is formed in the lower end of the main drill part, and a mud suction pipe is arranged in the main drill part and communicated with the mud inlet hole. According to the invention, the self-protection wall of the cement-mixed soil can be realized, and the cement-mixed soil protection wall can be rapidly formed by injecting cement paste and an accelerator into the protection wall layer during hole forming.
本发明涉及建筑工程技术领域，具体为一种旋转式自护壁成孔灌注桩钻头及钻孔方法。一种旋转式自护壁成孔灌注桩钻头，包括主钻部件，主钻部件下端设置有钻头，主钻部件外壁上套有可旋转的护壁外筒；护壁外筒内壁上设置有凸部；主钻部件外壁上设置有用于卡入凸部限制护壁外筒旋转范围的凹槽；护壁外筒上分布有槽口，槽口内设置有可横向翻动的叶片；主钻部件上设置有用于控制叶片张开合拢的推件；叶片上设置有用于输出混凝土浆的出浆孔和用于输出速凝剂的出液孔；主钻部件下端设置有进泥孔，内部设置有吸泥管与进泥孔连通。本发明能够实现水泥搅拌土自护壁，成孔的同时可实现在护壁层注入水泥浆和速凝剂搅拌快速形成水泥搅拌土护壁。
Rotary self-retaining wall pore-forming cast-in-place pile drill bit and drilling method
The invention relates to the technical field of constructional engineering, in particular to a rotary self-retaining wall pore-forming cast-in-place pile drill bit and a drilling method. A rotary self-retaining wall hole-forming cast-in-place pile drill bit comprises a main drill part, a drill bit body is arranged at the lower end of the main drill part, and the outer wall of the main drill part is sleeved with a rotatable retaining wall outer barrel; a convex part is arranged on the inner wall of the protective wall outer cylinder; the outer wall of the main drill part is provided with a groove used for being clamped into the protruding part to limit the rotation range of the protection wall outer cylinder. Notches are distributed in the protective wall outer cylinder, and blades capable of turning over transversely are arranged in the notches; the main drill part is provided with a pushing piece used for controlling the blades to be opened and closed. Grout outlet holes for outputting concrete grout and liquid outlet holes for outputting an accelerator are formed in the blades; a mud inlet hole is formed in the lower end of the main drill part, and a mud suction pipe is arranged in the main drill part and communicated with the mud inlet hole. According to the invention, the self-protection wall of the cement-mixed soil can be realized, and the cement-mixed soil protection wall can be rapidly formed by injecting cement paste and an accelerator into the protection wall layer during hole forming.
本发明涉及建筑工程技术领域，具体为一种旋转式自护壁成孔灌注桩钻头及钻孔方法。一种旋转式自护壁成孔灌注桩钻头，包括主钻部件，主钻部件下端设置有钻头，主钻部件外壁上套有可旋转的护壁外筒；护壁外筒内壁上设置有凸部；主钻部件外壁上设置有用于卡入凸部限制护壁外筒旋转范围的凹槽；护壁外筒上分布有槽口，槽口内设置有可横向翻动的叶片；主钻部件上设置有用于控制叶片张开合拢的推件；叶片上设置有用于输出混凝土浆的出浆孔和用于输出速凝剂的出液孔；主钻部件下端设置有进泥孔，内部设置有吸泥管与进泥孔连通。本发明能够实现水泥搅拌土自护壁，成孔的同时可实现在护壁层注入水泥浆和速凝剂搅拌快速形成水泥搅拌土护壁。
Rotary self-retaining wall pore-forming cast-in-place pile drill bit and drilling method
旋转式自护壁成孔灌注桩钻头及钻孔方法
ZENG YONGLI (Autor:in)
08.07.2022
Patent
Elektronische Ressource
Chinesisch
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