Device for cleaning bored pile steel protective case inner wall mud and application method thereof

Abstract

The invention discloses a device for cleaning bored pile steel protective case inner wall mud and an application method thereof. The device comprises an inner barrel, an outer barrel and a pneumatic capsule, wherein the inner barrel and the outer barrel are both in circular shapes, the inner barrel is located in the outer barrel, the circle centers of the inner barrel and the outer barrel coincide, a concrete-filled cavity is arranged between the inner barrel and the outer barrel, and the concrete-filled cavity is filled with concrete. The pneumatic capsule is in a ring shape and is blanketed on the outer barrel. A plurality of arc-shaped steel plates are arranged outside the pneumatic capsule, and all the arc-shaped steel plates are evenly distributed along the circumference direction. The device for cleaning the bored pile steel protective case inner wall mud and the application method thereof are simple in structure, easy in spot operation and capable of being reused. The cleaning effect of the bored pile steel protective case inner wall mud can be improved greatly, the effective bonding of the steel protective case and the pile foundation concrete is further guaranteed, the development of the mechanical property of the steel protective case is improved, and the reinforcement ratio of the pile foundation or the pile diameter can be reduced.

Description

technical field [0001] The invention relates to a device for removing mud on the inner wall of a bored pile steel casing, and a method for using the device. Background technique [0002] Bored cast-in-place piles are the commonly used substructure form in bridge engineering. Before drilling, a steel casing with a certain wall thickness (generally greater than 10mm) is driven into the bearing layer. The steel casing is not only the external formwork for the concrete pouring of the pile foundation, the temporary fixing point for the construction of the cap, but also an additional measure for the durability of the pile foundation. However, the wall thickness of the steel casing is generally determined by the construction requirements of driving into the bearing layer. Rotary drilling can be used for construction in soft soil layers such as mud or muddy soil. The hole forming process is likely to cause mud to adhere to the inner wall of the steel casing. It is difficult to compl...

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Problems solved by technology

In order to improve the circumferential binding force of the steel casing on the pile foundation, it is necessary to ensure that the inner wall of the steel casing is closely bonded to the concrete, without any weak interlayers such as mud. However, there is no device and construction technology for removing the mud on the inner wall of the steel casing of bored piles. Require

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