Wind-Resistant Capacity Modeling for Electric Transmission Line Towers Using Kriging Surrogates and Its Application to Structural Fragility

Wind loading on a transmission tower structure is jointly influenced by the wind field, structural parameters, and geo-spatial configuration of line. Considering multi-parametric effect, this paper aims at developing limit capacity model for towers under strong winds. To end, expressed via two equivalent means: one speed as function angle attack span line; other surface with three fundamental load components principal axes. An adaptive kriging surrogate modeling constructed to approximate function/surface uncertainties considered. The performance improved adding support points then evaluated overall accuracy validation local error check. A numerical example demonstrating feasibility winds presented. Finally, fragility assessment concerning practical line subjected typhoons accomplished using established tower.