Partially prestressed concrete electric pole and preparation method thereof

A concrete and prestressed technology, applied in the direction of manufacturing tools, structural elements, building components, etc., can solve the problems of no bearing capacity prestressed concrete poles, products can not meet the design load requirements, etc., to improve the tensile strength and resistance. The effect of cracking and prolonging the service life
CN101718153AInactive Publication Date: 2010-06-02SICHUAN CHINA STRUCTURE RESIDENTIAL IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN CHINA STRUCTURE RESIDENTIAL IND
Publication Date
2010-06-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of concrete electric poles, in particular to a partially prestressed concrete electric pole and a preparation method thereof. The partially prestressed concrete electric pole is formed by casting concrete on an electric pole frame which comprises a spiral reinforcement, reinforcing steel bars and an erect ring, wherein reinforcing steel bars comprise prestressed reinforcing steel bars and non-prestressed reinforcing steel bars which are alternately distributed on the circumference. The invention adopts two kinds of reinforcing steel bars to be circularly, uniformly and alternately crossed and matched, improves the tensile strength and the crack resistance of the partially prestressed concrete electric pole, prolongs the service life of the electric pole, has low manufacture cost and is particularly suitable for line modification of counties and cities.
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Description

technical field

[0001] The invention belongs to the technical field of concrete electric poles, in particular to a partially prestressed concrete electric pole and a preparation method thereof. Background technique

[0002] In recent years, with the implementation of the transformation of urban and rural power grids in my country, the power grid has been developing day by day, and the erection of lines has developed towards large wire diameters and multi-circuits. The requirements for the tower network structure and load are also greater. Rods and ring-shaped prestressed poles are almost unable to meet the requirements of the bearing capacity of some lines. my country's conical concrete poles generally have a taper of 1 / 75, and the concrete grade is C50. Without changing the taper of the pole, increasing the amount of steel bars or increasing the concrete strength grade will be restricted by the concrete grade. The bending strength of steel bars cannot be improved.

[0003] ...

Claims

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