Offshore large-diameter steel pipe pile side grouting device and its construction method

Abstract

The invention discloses a side grouting device for large-diameter steel pipe piles on the sea, which comprises a pipe pile and a grouting pipe fixed on the inner wall of the pipe pile. The upper end of the grouting pipe is externally connected to the grouting platform, and the lower end It is connected with the grouting hole opened on the pipe pile wall, and the grouting hole is movable and sealed. The offshore large-diameter steel pipe pile side grouting device can effectively fill the gap between the outer wall of the steel pipe pile and the surrounding coral reef layer with concrete, so as to improve the bearing performance of the steel pipe pile, reduce the settlement of the foundation pile and reduce the cost ; The pile side grouting device for steel pipe piles is economical and applicable, suitable for installation on the construction site, easy to popularize and apply, and simple to obtain materials. Easy to promote and use.

Description

technical field [0001] The invention relates to a pipe pile and a construction method in the field of civil engineering, in particular to a side grouting device for a large-diameter steel pipe pile at sea and a construction method thereof. Background technique [0002] With the development of my country's economy, the demand for energy is increasing. Due to the rich natural resources in the South China Sea, they have high development value, and almost all islands and reefs in the South China Sea are composed of coral reefs. The traditional bored pile foundation has a long construction period and a large amount of grouting, resulting in high cost. In order to ensure the stability of the borehole, support measures need to be taken to ensure construction safety; the grouting amount of the bored pile is large, and after consolidation Large shrinkage occurs, and cracks are prone to occur, resulting in a decrease in bearing capacity. Compared with bored piles, steel pipe piles ha...

AI Technical Summary

Problems solved by technology

However, the particles of bored piles and steel pipe piles driven into coral reef geology are easily broken, which reduces the bearing capacity. Therefore, it is necessary to use post-grouting technology to improve the bearing capacity of foundation piles in coral reef geology. There is an urgent need for the construction technology and construction methods of the foundation pile bearing capacity

Although bored piles have been widely used, the project cost is too high and it is difficult to reduce the cost by improving the process

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