Stress Performance Analysis On750kV FRP Rush-repair Tower

In the northwest region of China,750kV grid scale has been developing rapidly, butthe frequent natural disasters led to the tower collapse accidents, and causing theenterprise bigger loss. Due to the previous use of rush-repair pole weight and easycorrosion, handling and assembly is time-consuming, and is composed of a new typeglass steel material manufacturing repair tower is high and has good insulation, caneffectively realize the rapid repair of tower. Therefore, it is necessary for the glass steelmaterial under the condition of750kV rush-repair pole for stress analysis, to study thedouble pole mast structure mechanical properties.This paper selects eight kinds of specifications, five kinds of slenderness ratio oftotal40FRP equilateral angle member for axial compression test of each component,observed the destruction form and slenderness ratio of the relationship, and to determinethe FRP of the elastic modulus of materials. In addition, will test the stability coefficientand domestic and foreign steel structural rule computation stability coefficients werecompared, in this article based on the research of others, fitting a concise stabilitycoefficient.This article through to the750kV FRP repair tower model test study, in its analysisof the mounting conditions and wind load conditions of cable and rod body stressperformance and deformation; and through the SAP2000software for finite elementsimulation analysis. And analysis of the stiffness of joint and bolt slip joint structurefactors on tower structure stress influence; in addition, the paper also to repair the towerstructure is composite cross arm for further experimental research, concrete analysis inthe two condition of cross arm and rod stress performance. In order to optimize the rush-repair pole double pole mast structure stress anddeformation, this paper studies the cable initial stress, inclination, layers and layerspacing of cable parameters and a rod body segment, edge width and material selectionof rod body parameter change on the structure stress performance, and then putsforward the rush-repair pole optimization of the various parameters set. Through finiteelement simulation comparison, the optimal structure deformation is small, and stress isgood, both played on the mechanical properties of the material, and have bettereconomic benefits, for rush-repair pole design provides some theory reference.