Simulation Research on Bearing Performance of Transmission Tower Main Member Steel Angles After GFRP Bilateral Reinforced
With the increased length of the service life of transmission towers,there is a strong demand for upgrading the older towers.The existing reinforcement studies all use steel as reinforcement material,which inevitably leads to problems such as the heavy weight of reinforcement materials and difficulties in field transportation and hoisting.Aiming at these problems,a bilateral non-destructive reinforced scheme based on GFRP of transmission tower main member is proposed,a refined finite element model(FEM)of the main material reinforcement composite component is established,and the accuracy of the FEM is verified.The influence law of the angle steel slenderness ratio and bolt spacing on the failure mode and bearing capacity of the reinforced component is analyzed.The research shows that,this scheme can effectively improve the stable bearing capacity of the component,and with the increase of the slenderness ratio of the component,the reinforcement effect of the component increases gradually.With the increase of bolt spacing,the stable bearing capacity of the reinforced component gradually decreases at first and greatly decreases when the bolt spacing is 53i.
transmission towerangle steelglass fiber reinforced polymer(GFRP)reinforcementfinite element analysisbearing capacity
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