Precise measuring equipment for pile top elevation of cast-in-situ bored pile of ultra-deep hollow pile

Abstract

The invention discloses precise measuring equipment for the pile top elevation of a cast-in-situ bored pile of a ultra-deep hollow pile, and relates to the technical field of ultra-deep hollow pile cast-in-situ boring. The equipment comprises a cast-in-situ pile mechanism used for pouring cements, an elastic adjusting mechanism used for adjusting elasticity, an air inflation extrusion mechanism used for air inflation for extrusion and a magnetic repulsion mechanism used for magnetic repulsion, and a steel casing is arranged in the cast-in-situ pile mechanism. According to the equipment, when concretes ascend, under the condition that stones on one side are too many, the position where the concretes support a steel plate base is uneven, and when an air bag makes contact with the uneven position of the concretes, the air bag can change the gas of the air bag according to the uneven height of the concretes. Therefore, the force for supporting the steel plate base by the concretes is uniform, and L-shaped steel bars cannot generate friction with the holes of the steel plate base.

Description

technical field [0001] The invention relates to the technical field of drilling and grouting of ultra-deep empty piles, in particular to a device for accurately measuring the elevation of the pile top of an ultra-deep empty pile. Background technique [0002] With the rapid development of our country's economy, the urban space is becoming more and more dense, especially in the coastal development cities, some large high-rise buildings stand quietly; the super-deep foundation adds considerable difficulty to the construction, and the pile foundation is under construction. In the process, it is inevitable that the difference between the elevation of the wellhead and the elevation of the pile top will be too large. [0003] In general, the pile top elevation is controlled manually by experience, by measuring ropes, and by the amount of poured concrete, which cannot satisfy the accuracy of pile top elevation control to a large extent. Contents of the invention [0004] Aiming ...

AI Technical Summary

Problems solved by technology

[0003] In general, the pile top elevation is controlled manually by experience, by measuring ropes, and by the amount of poured concrete, which cannot satisfy the accuracy of pile top elevation control to a large extent.

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