Double layer erecting ring of partially prestressed concrete electrical pole and application thereof

Abstract

The invention discloses a double layer erecting ring for a partially prestressed concrete electrical pole. The ring comprises an erecting ring body (1), positioning rods (2), a connecting rod (3) andan auxiliary ring (4), the erecting ring body (1) is parallel to the auxiliary ring (4), the erecting ring body (1) and the auxiliary ring (4) are fixedly connected by the connecting rod (3), and a plurality of positioning rods (2) are horizontally arranged on the erecting ring body (1). The ring has the advantages of both structures of the prestressed concrete electrical pole and ordinary concrete, has better toughness and crack resistance, better controls cracks, deformation and damage under the use conditions, and is safe and reliable in the structure.

Description

technical field [0001] The invention relates to the technical field of electric poles, in particular to a partially prestressed concrete electric pole double-layer stand ring and its application. Background technique [0002] At present, the control of the protective layer of electric poles is a difficult problem for many manufacturers. Most domestic manufacturers use plastic rings to support the distance between the main reinforcement and the inner wall of the steel mold to achieve the control of the protective layer. This method is not suitable for high-strength poles densely covered with steel bars. Cage, since the plastic ring is round, with a diameter of about 45mm, there is no extra place to place the plastic ring in the high-strength rod dense reinforcement cage, and the plastic ring is easy to fall off or not perpendicular to the main reinforcement during the tensioning process, so use It is difficult for the plastic ring to control the protective layer of the pole, ...

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Problems solved by technology

[0002] At present, the control of the protective layer of electric poles is a difficult problem for many manufacturers. Most domestic manufacturers use plastic rings to support the distance between the main reinforcement and the inner wall of the steel mold to achieve the control of the protective layer. This method is not suitable for high-strength poles densely covered with steel bars. Cage, since the plastic ring is round, with a diameter of about 45mm, there is no extra place to place the plastic ring in the high-strength rod dense reinforcement cage, and the plastic ring is easy to fall off or not perpendicular to the main reinforcement during the tensioning process, so use It is difficult for the plastic ring to control the protective layer of the pole, and it is easy to break the pole at the position of the rubber ring under the condition of the pole being subjected to lateral force, and some manufacturers use a single-layer vertical ring, which can be easily damaged during the handling and tensioning process. The vertical ring of the middle frame is easy to crooked, the main reinforcement is not vertical, and the steel cage is not round, which affects the internal quality of the concrete pole

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