Prestress prefabricate spiral bamboo joint pile and construction method thereof

Abstract

The invention relates to a prestress prefabricate spiral bamboo joint pile and a construction method thereof. The prestress prefabricate spiral bamboo joint pile includes a pile body; a plurality of spiral convex bodies are axially arranged on an outer wall of the pile body at intervals to form a spiral bamboo joint structure; connection surfaces between the spiral convex bodies and the upper part and the lower part of the pile body are slopes; a boss is arranged on the upper end of the pile body; the upper end surface of the boss is provided with a mechanical quick inserting piece connecting two pile bodies; the spiral bamboo joint pile has various combination manners; a convex disc for down-spinning is arranged on the upper end surface of the boss; the convex disc is tightly fixed on the upper end surface of the boss through three bolts which are evenly distributed. Compared with the prior art, the prestress prefabricate spiral bamboo joint pile is high in bearing capacity, stability and construction efficiency, and is low in cost.

Description

technical field [0001] The invention relates to a prestressed prefabricated component spiral bamboo pile, which is mainly used in the fields of foundation reinforcement, improvement, earth displacement prevention and the like in municipal foundation, industrial and civil engineering construction. Background technique [0002] Pipe piles originated in Japan in the 1960s, and were first applied in the coastal areas of my country in the 1980s, and then gradually spread to inland provinces. Generally, the bearing capacity of concrete pipe piles depends on two parameters, one is the size of the pipe pile end face, and the other is the size of the pipe pile body area. In my country's coastal weak foundation engineering, the bearing capacity of the end face of the pipe pile accounts for about 10% to 20% of the bearing capacity of the entire pipe pile, and the bearing capacity formed by the friction between the pipe pile body and the surrounding foundation soil accounts for about 10...

AI Technical Summary

Problems solved by technology

At present, the common concrete pipe pile is basically a cylinder with equal diameter. The end surface area of ​​the concrete pipe pile of this mechanism is small, so that the end surface bearing capacity of the pipe pile is small; in addition, this kind of pipe pile is Equal-diameter cylinders make the surface area of ​​the pile body smaller, making the friction between the pile body and the surrounding foundation soil smaller, so that the bearing capacity of the pipe pile is smaller

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