Toughening prestressed centrifugal concrete pile

Abstract

The invention relates to a toughening prestressed centrifugal concrete pile which comprises a centrifugal concrete pile body, a prestressed main reinforcement, spiral hooping, two end plates and prestressed main reinforcement anchoring holes, and further comprises a non-prestressed main reinforcement and non-prestressed main reinforcement anchoring holes. Based on the reinforcement cage of the existing prestressed centrifugal concrete pile, the short anchoring reinforcements arranged on two end plates are changed into long non-prestressed main reinforcements capable of vertically passing through the whole frame so that the centrifugal concrete pile has the advantage of high bearing capacity because of the effect of the prestressed main reinforcement and the advantage of high horizontal bearing capacity because of the effect of the non-prestressed main reinforcement, therefore, the pile can replace the prefabricated solid square pile or on-site concreted pile used in area resisting eight-magnitude earthquake. Simultaneously, the structural design is reasonable, and the existing device and production method for producing the prestressed centrifugal concrete pile can be continue to use completely, therefore, the toughening prestressed centrifugal concrete pile is very easy for popularization, and a new variety is added for concrete piles.

Description

technical field [0001] The invention relates to a centrifugal concrete pile, in particular to a toughened prestressed centrifugal concrete pile which improves the horizontal bearing capacity of a pile foundation on the basis of a high vertical bearing capacity of a single pile, and belongs to the field of building materials. Background technique [0002] Concrete is a typical brittle material with high modulus of elasticity and no linear correspondence between compressive strength and tensile strength; steel bars have high tensile strength and good toughness; the combination of reinforced concrete makes full use of the characteristics of these two materials; The application of stress technology significantly improves the tensile capacity of reinforced concrete structures, reduces the amount of steel used in reinforced concrete structures and the bulk density of reinforced concrete materials, and is conducive to the development of long-span spatial structures, high-rise buildi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of prestressed concrete pipe piles, square piles brittle and insufficient horizontal bearing capacity of pile foundations, overcome the shortcomings of prefabricated solid square piles or large amount of steel used in cast-in-situ piles, On the basis of reinforcement design and production process of centrifugal concrete piles, a toughened prestressed centrifugal concrete pile with high vertical bearing capacity and horizontal bearing capacity of pile foundation is designed to meet the requirements of structural seismic design

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