Preparation method for prestressed high-strength concrete pile

Abstract

The invention provides a prestressed high-strength concrete pile, belongs to the filed of building, and in particular relates to a driven fender pile applied to deep foundation pit engineering. The prestressed high-strength concrete pile comprises concrete, a reinforcing cage and an end plate, wherein the shape of the end plate is round-angle square; diameters of circular arc segments of round angles are equal and are 1.1 to 1.3 folds of the side length of the square, preferably 1.2 folds; central angles of the circular arc segments are 13 degrees to 17 degrees, and the length of a straight-line segment is 0.3 to 0.5 fold of the side length of the square; the grade of the concrete strength is higher than C40; and a main reinforcement of the reinforcing cage is arranged on a circle taking a centroid of the end plate as a center or on the square. The prestressed high-strength concrete pile greatly reduces the problem of stress concentration and the damage to a pile body in construction, and improves the bearing capacity of the pile body, horizontal bending resistance and shearing resistance performances, beat resistance capacity and pulling resistance performance.

Description

technical field [0001] The invention relates to a method for preparing a prestressed high-strength concrete pile, in particular to a method for preparing a prestressed high-strength concrete pile, belonging to the construction field. Background technique [0002] my country has formulated corresponding norms and standards for the design, production and application of foundation piles, such as "Technical Specifications for Building Pile Foundations" (JGJ 94-2008) and "Pretensioned Prestressed Concrete Pipe Pile" (draft for review-2008), etc. . There are many kinds of pile materials in foundation pile engineering, which are mainly divided into two categories: prestressed components and non-prestressed components. Among them, the pile materials mainly include pipe piles, various square piles, cast-in-place piles, revolving hole piles, and bamboo piles; The bearing capacity is relatively low, the friction between the pile body and the soil layer is small, the bending and sheari...

AI Technical Summary

Problems solved by technology

Among them, the pile materials mainly include pipe piles, various square piles, cast-in-place piles, revolving hole piles, bamboo piles, etc.; these piles have inflexible reinforcement methods in actual use, small pullout resistance of the pile body, single pile Relatively low bearing capacity, small friction between the pile body and the soil layer, poor bending and shear resistance, long construction period, pile quality that cannot meet the design requirements, large waste of raw materials, high production costs, etc.

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