Prestressed concrete rod section with two ends in inner flange connection

Abstract

The invention relates to a prestressed concrete rod section with the two ends in inner flange connection. The prestressed concrete rod section comprises a prestressed concrete rod body and connecting flanges which are arranged at the two ends portions of the prestressed concrete rod body. The prestressed concrete rod section is characterized in that the connecting flanges which are arranged at the two ends portions of the prestressed concrete rod body are respectively steel inner flanges which are provided with an inner protection ring and an outer protection ring, connecting bolt holes and step holes are evenly formed in the periphery directions of the steel inner flanges provided with the inner protection ring and the outer protection ring, the inner protection ring and the outer protection ring are connected through a rib plate or a steel rib and are pre-buried at the two ends of the prestressed concrete rod body, the outer protection ring is arranged flush with the outer surface of the prestressed concrete rod body, and the two end heads of a prestressed main rib are directly anchored in the step holes of the inner flanges. The prestressed concrete rod section has the advantages that the rob body which is connected through the steel inner flanges is smooth and attractive in appearance, bumping cannot not happen easily, and the steel inner flanges with the inner protection ring and the outer protection ring are firmly connected with the prestressed concrete rod body.

Description

technical field [0001] The invention belongs to a prestressed concrete rod component, in particular to a prestressed concrete rod section whose two ends are connected by inner flanges. Background technique [0002] Conventional large-diameter multi-section conical poles, communication poles, wind power towers, etc. mostly use prestressed concrete rods, and the two ends of each prestressed concrete rod are connected by connecting flanges, and the connecting flanges at both ends The outer flanges are all used, and the prestressed concrete rod body is directly pressed on the inner end face of the flange. Due to the difference in elastic modulus between steel and concrete, it is easy to cause fatigue damage or stress concentration damage on the contact surface, and the reliability is not high; at the same time After the multi-section connection, the connection point is convex, which not only affects the appearance, but also during transportation, because the flange is convex, it...

AI Technical Summary

Problems solved by technology

[0002] Conventional large-diameter multi-section conical poles, communication poles, wind power towers, etc. mostly use prestressed concrete rods, and the two ends of each prestressed concrete rod are connected by connecting flanges, and the connecting flanges at both ends The outer flanges are all used, and the prestressed concrete rod body is directly pressed on the inner end face of the flange. Due to the difference in elastic modulus between steel and concrete, it is easy to cause fatigue damage or stress concentration damage on the contact surface, and the reliability is not high; at the same time After the multi-section connection, the connection point is convex, which not only affects the appearance, but also during transportation, due to the convex flange, it is easy to bump into other components and cause damage

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