Novel pre-stressed concrete pipe pile

Abstract

The invention discloses a novel pre-stressed concrete pipe pile. The novel pre-stressed concrete pipe pile comprises a pipe wall enclosed by an inner surface and an outer surface, wherein a framework of steel reinforcement formed by axial reinforcing steel bars and a plurality of transverse stirrups which are arranged in parallel along the axial reinforcing steel bars is arranged in the pipe wall. The novel pre-stressed concrete pipe pile is characterized in that: at least six convex teeth which are axially extended are regularly distributed around the outer surface; the surfaces among the convex teeth are planes; the quantity of the axial reinforcing steel bars is equal to that of the convex teeth; and the convex teeth are of isosceles trapezoids and connecting lines among the convex teeth are straight lines when the convex teeth are observed from the cross-section. The novel pre-stressed concrete pipe pile has the advantages that: all surfaces on the outer surface are planes; and the pipe pile can be conveniently manufactured by utilizing a plane template when the area of the outer surface of the pipe pile is improved.

Description

technical field [0001] The invention relates to a construction pipe pile, in particular to a novel prestressed concrete pipe pile. Background technique [0002] In order to improve the bearing capacity of the foundation of high-rise buildings and ensure the safety of buildings, prestressed concrete pipe piles are widely used in foundation engineering. The shape of traditional concrete pipe piles is circular, but the disadvantage of this kind of pipe piles is that the friction force between them and the soil is small. To meet the larger bearing capacity, it is often necessary to increase the length of pipe piles or the number of pipe piles. And this will increase the cost of the whole pile foundation project. In order to improve the friction between the pipe pile and the soil, people have made many improvements to the existing concrete pipe pile, such as the 200820160572.6 Chinese Invention Patent Specification issued on August 5, 2009, which discloses a prestressed The con...

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Problems solved by technology

However, the prestressed concrete pipe pile of this patented technical solution has the following defects: one is that it only considers the shape of the pipe pile and does not consider that such a structure is not applicable to all internal structures of pipe piles; the other is that the formwork is relatively complicated to make

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