Causes that determined the collapse of some poles from electrical network in public transport. Case study

Abstract

In most cases, the elements supporting the electrical power supply networks of the public transport are made of prefabricated concrete poles with longitudinal reinforcement passive or active, by pretension. Position by poles above the road which are exposed permanently action of climatic factors and seasonal action, antifreeze protection for roads, and agents used in winter for the maintenance of the roadway. The case study presented in this paper is based on an analysis and evaluation of the causes that produced the failure of two poles supporting the electric public transport network in Brasov, following accidental exploitation actions.