Analiza Opterećenja Rešetkastog Dalekovodnog Stuba Prema Evropskim Standardima

Abstract

У раду се приказује анализа оптерећења далеководног носивог двосистемског стуба напонског нивоа 110kV према Европским Нормама. С обзиром на специфичност оптерећења које дјелује на далеководни носиви стуб велика труд се мора посветити анализи оптерећења и усвајању случајева оптерећења. Анализирана конструкција је решеткасти челични стуб висине 41,50m са три пара конзола. Након тога, приказује се и дискутује поређење резултата добијених према Европским Нормама са резултатима добијеним према Југословенским стандардима.

Uporedna Analiza Dalekovodnog Stuba Prema Srpskim I Evropskim Standardima

“…As can been seen in Table 8 Results of the design of the tower elements with loads obtained according to the recommendations given in section 2 and according to EN, [3], are very close. Based on the results of the calculation can be concluded that the load on the power line towers can be calculated by our standards with the recommendations that have been introduced in this paper.…”

“…for conductors and ground wires for rectangular cross-section lattice steel tower Unlike European standars in which the load of the wind changes with height above the ground (as shown in [3], tables 3, 4 and 5), according to our standars wind pressure is adopted as constant up to a certain height above the ground [2], Table 1. …”

“…Considering that the structural elements will be designed according to Eurocode 3, [4,5], partial factor were adopted according to the recommendations given in [3,4], and are shown in Table 4. Table 5 presents load cases for suspesion tower according to EN [4].…”

“…This paper gives a detailed view of the load analysis on the overhead suspension tower according to Pravilnik o tehničkim normativima za izgradnju nadzemnih elektroenergetskih vodova nazivnog napona od 1kV do 400kV, hereinafter Pravilnik, [2]. This paper is a continuation of work "Proračun dalekovodnog nosivog stuba 2D4 prema Evropskim Normama", [3]. In previous paper was presented load analysis on power line tower according to European standards and comparison of the obtained results with results obtained according to the Pravilnik, [2].…”

“…After conducting the analysis, it was concluded that the reason for the difference obtained according to two standards is the result of the fact that our standars do not consider load conditions with a combined action of the wind on ice-covered conductors. On the other hand this influence is required according to EN [4] and as it shown in [3] caused the maximum impacts in tower. Considering the differences among the standarads in paper is presented algorithm for calculation of loads of simultaneous action of wind and ice on conductors and ground wire that is made by combining the recommendations given in [2] and [4].…”