Improved disaster-resistant reinforced concrete annular rod

Abstract

The invention discloses an improved disaster-resistant reinforced concrete annular rod. A longitudinal tensioned reinforcing steel bar is additionally arranged on the lower part of the annular rod. The improved disaster-resistant reinforced concrete annular rod has the advantages of reducing the number of the distributed steel of the whole annular rod, improving the disaster resistance and contributing to the popularization and application because the longitudinal tensioned reinforcing steel bar is additionally arranged on the lower part of the annular rod.

Description

technical field [0001] The invention relates to a reinforced concrete ring-shaped rod for power transmission and communication lines, in particular to an improved disaster-resistant reinforced concrete ring-shaped rod. Background technique [0002] In recent years, natural disasters have been increasing, especially typhoons in coastal areas and ice and snow disasters in inland mountainous areas are more frequent, and the phenomenon of inverted and broken reinforced concrete ring-shaped poles of power transmission and communication lines occurs frequently, causing serious economic losses and social impacts . The reason is mainly that the design of a large number of reinforced concrete ring rods for power transmission and communication lines in my country is still based on the old specifications, and the structure is not reasonable enough. The structure is composed of concrete and steel bars. Considering the working conditions and manufacturing costs, the old rod type Usually,...

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Problems solved by technology

) has sufficient bending resistance, which is based on the lower part of the bar, which leads to ample load-bearing capacity of the upper bar section, resulting in waste of reinforcement in the upper bar section and increased manufacturing costs. Although the current old bar type also adopts The method of variable cross-section is used to reduce the load-bearing capacity of the upper part of the bar. However, since the steel bars are wildly matched, that is, the steel bars at the upper part and the lower part of the bar are the same, which makes the load-bearing capacity of the upper part of the bar still unable to be solved well. As a result, the manufacturing cost remains high, and at the same time, the bearing capacity margin of the lower part of the pole is smaller than that of the upper part, which makes the disaster resistance of the old pole type quite weak

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