An investigation of load bearing estimation method of transmission towers with base displacement considering bolt slip

Abstract

Load bearing deterioration of existing transmission towers due to unequal base displacement is estimated by numerical analyses and measurements. However, the accuracy and efficiency improvement of the practical analysis technique is inevitably requested, because of a lot of anxiety towers that should be diagnosed. The purpose of this paper is to confirm the proposed analysis method paying attention to nonlinear behaviors practically, such as ratio of construction error to total base displacement and bolt slipping stress. It was clarified that the present method is remarkably improved from the viewpoint of accuracy and efficiency improvement compared with the current method.