Underwater cast-in-place concrete pile top pouring height control device and control method thereof

Abstract

The invention discloses an underwater cast-in-place concrete pile top pouring height control device and a control method thereof. The device comprises a position indicating rod arranged on one side ofa cast-in-place pile reinforcement cage main reinforcement in parallel through a guide ring, a buoyancy ball is located at the bottom of the position indicating rod, and three-color reflective filmsare sequentially arranged up and down along the position indicating rod; and an anti-sinking positioning clamp is arranged above the position indicating rod. According to the underwater cast-in-placeconcrete pile top pouring height control device and the control method thereof, initial positioning of the position indicating rod in a mud layer is controlled through the buoyancy of the buoyancy ball and the position indicating rod in mud, the poured concrete liquid level rises until the poured concrete liquid level makes contact with the buoyancy ball, then the position indicating rod is pushedto gradually and vertically rise, and the pile top pouring condition of a concrete pouring pile is determined by observing the reflective films of different colors. By means of the self-weight of materials and the buoyancy relation of the materials in mud, the concrete pouring height of the pile top of the cast-in-place pile can be accurately controlled; and the device is simple to operate, convenient and easy to understand, simple to manufacture, low in cost, reusable and good in economic benefit.

Description

technical field [0001] The invention relates to the construction field of underwater concrete pouring piles such as bridge engineering and geotechnical engineering, in particular to an underwater concrete pouring pile top pouring height control device and a control method thereof. Background technique [0002] Underwater cast-in-situ piles are widely used in bridge engineering, geotechnical engineering and other fields, and have become the most important form of foundation engineering in civil engineering construction. "Technical Specifications for Building Pile Foundations" (JGJ 94-2008) stipulates that when pouring piles, the concrete of the piles should be overfilled by 50-100cm after pouring to the design elevation to ensure the strength of the concrete at the pile head. Due to the existence of mud in the pile hole of the cast-in-place pile, the construction process of the underwater cast-in-place pile is a concealed project, and it is difficult to accurately judge the p...

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides an underwater concrete pouring pile top pouring height control device and its control method, which can effectively solve the difficulty in accurately controlling the top pouring height of underwater concrete pouring piles in the fields of bridge engineering and geotechnical engineering. The problem

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