Large-diameter PHC tubular pile with double-layer reinforcement cage and preparation method thereof

Abstract

The invention discloses a large-diameter PHC tubular pile of a double-layer reinforcement cage and a preparation method thereof, and relates to the technical field of PHC tubular piles. According to the large-diameter PHC tubular pile, the PHC tubular pile is optimized in the mode that ordinary steel bars and prestressed steel bars are combined and configured, a plurality of ordinary steel bars are arranged in a high-strength concrete pile body and are close to the outer side wall, a plurality of prestressed steel bars are arranged in the high-strength concrete pile body and are close to the inner side wall, the steel bars which are enclosed into a triangle are welded to the prestressed steel bars in the corresponding positions, and the angular points of the triangular steel bars are bound and connected with the ordinary steel bars in the corresponding positions. In the mode, on one hand, the maximum bending resistance and shearing resistance of the pile body are increased, and on the other hand, the pile body has certain energy dissipation capacity, namely certain ductility performance, so that under the action of horizontal cyclic loads, the pile body can have enough deformation to consume more energy, and brittle failure is avoided. The large-diameter PHC tubular pile has the characteristics of convenience in manufacturing, economy, reliability and high practicability, and the anti-seismic performance of the high-strength prestressed tubular pile is improved.

Description

technical field [0001] The invention belongs to the technical field of PHC pipe piles, in particular to a large-diameter PHC pipe pile with a double-layer reinforcement cage and a preparation method thereof. Background technique [0002] PHC pipe piles have high compressive bearing capacity, good pile quality and low unit price, so they are widely used in hydraulic construction foundation construction. However, PHC pipe piles have low reinforcement ratio and poor ductility, and are generally restricted in areas with high seismic fortification intensity, which affects their promotion in many Southeast Asian earthquake zones. Therefore, it is necessary to study the optimization method of PHC pipe piles to improve Ductility and horizontal bending resistance, enhance engineering adaptability, and promote the application of PHC pipe piles overseas. [0003] Experiments show that the prestressed steel bars in PHC pipe piles often suffer from brittle failure. At this time, the me...

AI Technical Summary

Problems solved by technology

However, PHC pipe piles have low reinforcement ratio and poor ductility, and are generally restricted in areas with high seismic fortification intensity, which affects their promotion in many Southeast Asian earthquake zones. Therefore, it is necessary to study the optimization method of PHC pipe piles to improve Ductility and horizontal bending resistance, enhance engineering adaptability, and promote the application of PHC pipe piles overseas

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