Quincunx concrete pipe pile

Abstract

The invention provides a quincunx concrete pipe pile. The quincunx concrete pipe pile comprises a pile body and metal plates welded to the upper end and the lower end of the pile body. The pile body comprises a reinforcement cage and concrete filling the reinforcement cage. The cross section of the pile body comprises a hollow inner circle and a quincunx outline. The outline is composed of N convex arcs and N concave arcs at intervals, and the adjacent convex arcs and concave arcs are connected in a streamline mode. The reinforcement cage comprises N pairs of main bars and N reinforcing meshes, and further comprises a plurality of hoops, each pair of main bars are located on the symmetry line of the corresponding concave arcs, each reinforcing mesh is located on the symmetry line of the corresponding convex arcs, the multiple hoops are arranged up and down and are parallel, each hoop is welded and fixed to the N pairs of main bars and the N reinforcing meshes, each reinforcing mesh comprises two vertical bars and a plurality of short bars located between the two vertical bars and used for connecting the two vertical bars, the two vertical bars of each reinforcing mesh are located on the symmetry line of the corresponding convex arcs, are parallel to the main bars, penetrate through the concrete on the pile body in the up and down direction together with the main bars and are welded to a metal plate, and N is a natural number bigger than 3.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a plum blossom-shaped concrete pipe pile and a construction method thereof. Background technique [0002] With the rapid development of construction, transportation and marine foundation engineering, pile foundation engineering is widely used in engineering practice. Due to the increasing application of pile foundation engineering, more and more scholars have begun to study how to improve the bearing capacity of pile foundation and how to make full use of pile materials. After investigation, it is found that among the methods to improve the performance of pile foundations, increasing the pile length or pile diameter can improve the bearing performance of pile foundations, but only by increasing the pile body material to improve the bearing capacity of pile foundations, this method is neither economical nor expensive. Therefore, seeking to achieve high bearing capacity, low ...

AI Technical Summary

Problems solved by technology

After research, the external cross-sections of concrete pipe piles currently on the market are mainly circular, square or other non-streamlined cross-sections. The specific surface area of ​​circular pipe piles is relatively small, and the material utilization rate is relatively low. Performance, although the specific surface area of ​​square pipe piles or other non-streamlined pipe piles is relatively large, they are prone to stress concentration at the corners of their cross-sections, and long-term stress concentration during use tends to shorten the service life of pipe piles

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