Novel steel structure anchor increasing and grouting uplift pile and construction method thereof

Abstract

The invention discloses a novel steel structure anchor increasing and grouting uplift pile and a construction method thereof. The novel steel structure anchor increasing and grouting uplift pile is composed of a pile body and anchor increasing deformation devices. The pile body is composed of a steel pipe shaft, a tapered pile tip, anchor increasing deformation holes, sliding rails, T-shaped steelstiffening plates and a protective pile cap. The anchor increasing deformation holes are a plurality of rectangular openings formed in the pile body and provide deformation channels for the anchor increasing deformation devices, and the T-shaped steel stiffening plates are welded to the two sides of the anchor increasing deformation holes to improve pile strength. The anchor increasing deformation devices are composed of upper rotating shafts, lower sliding shafts, rotating arms, connecting boxes, connecting bearings, reinforcing caps, sliding threaded sleeves and threaded rods. After the pile body penetrates into the ground, the threaded rods are rotated to drive the sliding threaded sleeved to move upwards, the connecting boxes and the reinforcing caps are squeezed into soil around thepile body through the transmission function of the bearings and the rotating arms to enhance the uplift resistance of the pile body. The novel steel structure anchor increasing and grouting uplift pile and the construction method thereof solve the defects of low strength, insufficient uplift force and complex construction of a pile body of an existing uplift pile, and has a broad application prospect.

Description

technical field [0001] The invention discloses a novel steel anchor-increasing cast-in-place uplift pile and a construction method thereof, which are particularly suitable for underground construction projects such as underground parking lots and basements with relatively high groundwater levels and relatively high buoyancy. Background technique [0002] With the development of the country's economic construction, the level of urbanization continues to advance, more and more people are moving to cities, and there is a greater demand for housing. High-rise residential buildings have the advantages of saving land and increasing housing and resident population, and have developed rapidly in recent years. In order to save land, alleviate traffic pressure, and compress the use of space, all high-rise residential buildings will build auxiliary structures such as underground parking lots and basements with large areas. When the underground structure is lower than the surrounding so...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects existing in the existing uplift piles, the present invention provides a new type of steel structure anchor-increased cast-in-place uplift pile and its construction method, which solves the problems of insufficient strength of the pile body, low pullout resistance and complicated construction of the uplift pile. It can be used in underground construction projects with high water level and high buoyancy, such as underground parking lots and basements

Images