Method for fixing electric pole ends without releasing partial prestress

Abstract

The invention provides a method for fixing electric pole ends without releasing partial prestress. The method includes steps of prefabricating a concrete pole body, installing the corrosion-resistant electric pole ends and fixedly installing low-relaxation helical rib steel wires; enabling the aperture of the upper end of the concrete pole body to be smaller than that of the lower end of the concrete pole body; installing the corrosion-resistant electric pole ends at the upper end and the lower end of the concrete pole body; fixing the corrosion-resistant electric pole ends to the concrete pole body by the aid of the low-relaxation helical rib steel wires to guarantee that an effect of the prestress can be effectively realized. The method has the advantages that the corrosion-resistant electric pole ends are connected onto the concrete pole body by the low-relaxation helical rib steel wires, so that the effect of the prestress of an electric pole can be effectively realized, operation is simple, the method is easy to implement and popularize, and the technological cost is low; T-shaped low-relaxation helical rib steel wire through holes are formed in joints of the low-relaxation helical rib steel wires and the corrosion-resistant electric pole ends, so that the low-relaxation helical rib steel wires can be prevented from falling off, the service life of a product can be prolonged, and safe power supply can be guaranteed.

Description

technical field [0001] The invention relates to the field of manufacturing methods of power supply equipment, in particular to a method for fixing the end of a prestressed electric pole without tension. Background technique [0002] There are two types of concrete poles: ordinary reinforced concrete poles and prestressed concrete poles. The cross-section of the pole has square, octagonal, I-shaped, circular or other special-shaped cross-sections. The most commonly used are circular section and square section. The length of the entire pole is generally 3 to 18 meters. There are two kinds of ring-shaped poles: tapered pole and equal-diameter pole. The true diameter of the tapered pole is generally 150-550 mm, and the taper is 1:75; the diameter of the equal-diameter pole is 300-550 mm; the wall thickness of both is 40 to 80 mm. [0003] In the 1980s, China developed the centrifugal method annular prestressed concrete pole. Its manufacturing process is mainly to stretch th...

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Problems solved by technology

[0004] However, at present, the connecting ends of electric poles are all made of ordinary flanges, which cannot give full play to the prestressing effect of low-relaxation spiral rib steel wires.

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