Pile sinking process of steel pipe pile foundations in electric transmission line

Abstract

The invention relates to a pile sinking process of steel pipe pile foundations in an electric transmission line. The process comprises the following steps: firstly, putting steel pipe piles in a siteand hoisting and stacking the steel pipe piles; then identifying pile sites with lime according to the pile sites formulated by a design and construction drawing; excavating foundation pits in positions where the piles are needed to be pressed; fixing limiting rings for limiting the positions of the steel pipe piles to the openings of the foundation pits; holding up the steel pipe piles by means of a crane; moving the steel pipe piles toward the foundation pits, wherein the steel pipe piles finally penetrate through the limiting rings and are inserted into the foundation pits; adjusting the perpendicularity of the steel pipe piles; fixing the limiting rings to the ground; then removing the crane; putting connecting steel pipes in a channel and welding the connecting steel pipe to adjacenttwo steel pipe piles together; filling the foundation pits and the channel with concrete; and removing the limiting rings after the concrete is solidified. The contact area of the steel pipe pile foundations and the ground is increased, and the pile block horizontal displacement of the steel pipe pile foundations can be reduced effectively, so that pole towers fixed to the steel pipe piles are unlikely to incline with relatively high safety.

Description

technical field [0001] The invention relates to a pile sinking process for steel pipe pile foundations in power transmission lines. Background technique [0002] The steel pipe pile foundation has been widely used in the foundation of steel pipe tower transmission lines due to the advantages of low engineering cost, small footprint, and short construction period. At present, due to the limitation of the steel pipe pile sinking construction technology, this foundation type can only be applied in swampy land, loose clay and other geologically good locations. [0003] The patent application publication No. CN107119684A discloses a pile sinking process for steel pipe pile foundations in power transmission lines. During use, the pile top of the steel pipe pile is prone to displacement, causing the pole tower fixed on the steel pipe pile to tilt, which has certain potential safety hazards. Contents of the invention [0004] The object of the present invention is to provide a s...

AI Technical Summary

Problems solved by technology

At present, due to the limitation of the steel pipe pile sinking construction technology, this foundation type can only be applied in swampy land, loose clay and other geologically good locations

[0003] The patent application publication No. CN107119684A discloses a pile sinking process for steel pipe pile foundations in power transmission lines. When in use, the pile top of the steel pipe pile is prone to displacement, causing the pole tower fixed on the steel pipe pile to tilt, which has certain potential safety hazards

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