Pile-side grouting device for offshore large-diameter steel pipe pile and construction method of pile-side grouting device

Abstract

The invention discloses a pile-side grouting device for an offshore large-diameter steel pipe pile. The pile-side grouting device comprises the pipe pile and grouting pipes fixed to the inner wall of the pipe pile. The upper ends of the grouting pipes are externally connected with a grouting platform. The lower ends of the grouting pipes are connected with grouting holes formed in the walls of the pipe pile, and the grouting holes are movably sealed. By the adoption of the pile-side grouting device for the offshore large-diameter steel pipe pile, a gap between the outer wall of the steel pipe pile and the surrounding coral reef layer can be filled with concrete effectively, and the effects that the bearing capacity of the steel pipe pile is improved, the settlement of the foundation pile is reduced and the cost is reduced are achieved. The pile-side grouting device for the steel pipe pile is affordable, suitable for being mounted at a construction site and convenient to apply and popularize, raw materials can be obtained easily, and the pile-side grouting device can be mounted and used by professionals at the construction site simultaneously with piling, the progress of a project can be saved effectively, and thus the pile-side grouting device is convenient to use and popularize.

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

Images