A method for early warning of tower emergency failure under ground settlement condition

Abstract

The invention discloses a pole tower emergency failure warning method under ground settlement condition. The invention locates the weak point of the pole tower under the ground settlement condition through the finite element simulation calculation, and provides guidance for the selection of strain measuring points; The safety margin of the tower under the ground settlement condition can be given accurately by analyzing the influence of the foundation change on the strain change of the measuring point. Through the real-time monitoring of the tower steel structure strain in a short time, combined with the results of finite element simulation analysis, it can effectively reflect the tower safety status and play a role of failure early warning, which is convenient for line operators to make correct emergency decisions. In addition, the invention provides a non-contact type tower strain real-time monitoring method and flow based on a substrate and a fixture, which can overcome the shortcomings such as installation and maintenance difficulties caused by the strain gauge directly pasted on the tower, easy dampness of the sensor and the like, and can be widely applied to the dangerous tower steel structure strain real-time monitoring under the short-term inland foundation settlement condition.

Description

technical field [0001] The invention relates to a tower failure early warning method, in particular to a short-term emergency failure early warning method for towers under ground subsidence conditions based on the finite element method and strain monitoring means. Background technique [0002] The transmission line is not only an extremely critical facility of the power grid system, but also a huge artery for the safe and reliable operation of the power grid. Statistical data analysis shows that natural disasters are the primary reason for the downfall of power transmission lines in my country. Ultra-UHV transmission lines are hundreds of kilometers long and inevitably pass through complex geological and seismically active areas. Due to crustal movement, ground subsidence and other factors will cause changes in the foundation of towers, seriously affecting the safety of transmission line operation. The survey found that in many mountainous and hilly areas, cracking of the t...

AI Technical Summary

Problems solved by technology

[0005] Another purpose of the present invention is to solve the technical problems existing in the prior art; to provide a substrate-based non-contact tower strain real-time monitoring method and process, which can overcome the installation and maintenance problems caused by directly pasting the strain gauges on the tower It can be widely used in real-time monitoring of steel structure strain in dangerous towers under short-term foundation settlement conditions.

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