Abstract

Info

Title:: Analysis of Wind-resistant Limit Load of Transmission Line Steel Tower Based on Multi-wave Buckling Elements

Keywords:: transmission line steel tower; wind-resistant limit load; margin yield criterion; multi-wave buckling element; initial curvature

Abstract:: In order to effectively forecast the windresistant limit load of transmission line steel tower, a multiwave buckling element was proposed to simulate the stressed members subjected to secondary members. According to the criterion of section margin yield, the limit compression stress of the multiwave buckling elements was determined. The windresistant limit load was investigated numerically for a drumtype tangent transmission line steel tower of 110 kV. The study results show that the supporting effect of secondary members and the initial curvature of stressed members can be effectively taken into account using the multiwave buckling element, and the model of structure can exclude secondary members. The proposed method is simple and practicable, and can effectively estimate the windresistant limit load of a largescale transmission line steel tower.