Anchoring precast pile for underground engineering and construction method: Fid-Bau Portal

Anchoring precast pile for underground engineering and construction method

LIN JIANGUANG

The invention relates to the technical field of underground buildings, in particular to an anchoring precast pile for underground engineering, which comprises a pile body of a hollow structure, a driving and rotating assembly coaxially arranged with the pile body and positioned at the hollow position of the pile body, and a plurality of anchoring assemblies mounted on the driving and rotating assembly at intervals; the anchoring assembly comprises a mounting part, an anchoring part and a pushing part movably connected to the mounting part and the anchoring part, the driving assembly is used for driving the mounting part to circumferentially rotate around the axis of the pile body, and then the anchoring part is controlled to stretch out and draw back towards the side wall of the pile body through the pushing part; the side wall of the pile body is provided with an anchoring hole for the anchoring part to penetrate through. Through cooperation of the rotation driving assembly and the anchoring assembly, the anchoring part can stretch out and draw back in the anchoring hole, the anchoring part can conveniently penetrate through the anchoring hole to be inserted into a soil body, and then the bearing capacity of the anchoring precast pile and an original underground foundation is improved.

本发明涉及地下建筑技术领域，尤其涉及一种地下工程用锚固预制桩，锚固预制桩包括：呈空心结构的桩体、与桩体同轴心设置且位于桩体空心位置的驱转组件以及多个间隔安装于驱转组件上的锚固组件；锚固组件包括：安装件、锚固件以及活动连接于安装件和锚固件上的推动件，驱转组件用于驱动安装件围绕桩体轴心进行周向转动，进而通过推动件控制锚固件朝向桩体侧壁方向伸缩；桩体侧壁上设有供锚固件穿过的锚固孔。本发明通过驱转组件和锚固组件的配合使得锚固件可以在锚固孔中伸缩，便于锚固件穿过锚固孔插入土体中，进而提高锚固预制桩及原地下基础的承载力。

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