An underwater concrete pouring pile elevation control device and its application method

Abstract

The invention provides an underwater cast-in-place concrete pile elevation control device and a using method thereof. The control device comprises a material taking tube and a telescopic scale, and is characterized in that the telescopic scale is hollow and is fixedly arranged at the upper end of the material taking tube; the material taking tube is a cylinder of which the lower end is open, multiple mud holes of which the diameter is smaller than the particle size of underwater concrete and is larger than the particle size of mud are formed in the wall of the cylinder; only mud can penetrate through the mud holes, and concrete cannot penetrate through the mud holes; a lower end cover which is open towards the interior of the tube in an open manner is arranged at a lower opening of the material taking tube; a vibration block of which the specific gravity is higher than specific gravity of the mud and is lower than the specific gravity of concrete is suspended in the material taking tube. The device is simple in structure, convenient in operation, easy to detach and flexible in assembly and can be repeatedly utilized by different types of underwater cast-in-place concrete piles, and the pile block elevation and concrete super-fusion height of the underwater cast-in-place concrete pile can be effectively controlled. Moreover, the production cost of construction projects can be effectively reduced, and high economic benefits can be obtained.

Description

technical field [0001] The invention relates to the field of pile foundation construction, in particular to an underwater concrete pouring pile elevation control device capable of quickly and accurately controlling the underwater concrete pouring height of bored pouring piles and a method for using the same. Background technique [0002] With the rapid development of the construction industry, the use of underwater concrete pouring piles has gradually increased, such as the foundations of some high-rise buildings, underground caverns, underground tunnels, bridges, ports, wharf foundations, etc., especially bridges in soft soil areas The foundation design of , port, wharf and high-rise buildings often uses bored piles for underwater concrete pouring. [0003] Due to the development of underground space, the design elevation of the pile top is often below the bottom surface. Due to the existence of the mud mixture during the concrete pouring process, it is difficult to correct...

AI Technical Summary

Problems solved by technology

Since the height of the concrete surface cannot be truly determined, there are often problems such as excessive pipe removal, which makes the bottom of the pipe higher than the height of the concrete surface, resulting in broken piles, or too short pipe removal, which makes pouring difficult.

Moreover, the specification also requires that the concrete should be overfilled by 800 mm after pouring to the design elevation. Also, because the height of the concrete surface cannot be accurately determined, the overfilled height of the concrete is often much greater than 800 mm, resulting in a lot of waste

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