Repairable iron tower anti-icing disaster reduction design method

Abstract

The invention discloses a repairable iron tower anti-icing disaster reduction design method. The method comprises the steps: calculating the electrical load effect of an iron tower under normal use condition combination; calculating the internal force of each component of the iron tower according to the electrical load effect; determining Angle steel specifications and bolt specifications and numbers; according to the selected section size of the angle steel component, conducting bone type weakening section size design on the ground wire support and the wire cross arm main material angle steel; carrying out bearing capacity rechecking on the bone type weakened section under the normal use working condition. The bearing capacity of the bone type weakening section is compared with the bearing capacity of the bolt at the joint of the gusset plate, and if the bearing capacity of the bone type weakening section is smaller than the bearing capacity of the bolt at the joint of the gusset plate, the design is finished; if not, the number of bolts at the joint of the gusset plates is increased, and it is ensured that the bearing capacity of the bolts at the joint of the gusset plates is larger than that of the bone type weakened section. The problem that the whole iron tower collapses due to icing overload or deicing jump in winter is solved.

Description

technical field [0001] The invention belongs to the technical field of anti-icing technology for iron towers of transmission lines, and in particular relates to a design method for anti-icing and disaster reduction of repairable iron towers. Background technique [0002] Severe icing of power transmission lines and collapse of towers have had a huge impact on the power grid and society. If a tower collapse accident occurs on a line with a relatively high voltage level, the impact will be huge. At the same time, because most of the transmission lines are routed in mountainous areas, the terrain is steep and the traffic is inconvenient. Ice jumps lead to the collapse of the entire iron tower and damage to the foundation. When the overall tower is damaged or the foundation is damaged, it is necessary to find the position of the tower again. The original tower is completely scrapped, and the repair and restoration work is slow, time-consuming and laborious. Contents of the inv...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a repairable iron tower anti-icing and disaster reduction design method to solve the problem that the entire iron tower collapses and the foundation is damaged due to ice-covered overload or de-icing jump in the prior art transmission line railroad This phenomenon happens from time to time. When the overall tower is damaged or the foundation is damaged, it is necessary to find the position of the vertical tower again. The original tower is completely scrapped, and the repair and restoration work is slow, time-consuming and laborious.

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