FRP加固钢筒仓的有限元数值分析

Silo wall is cylindrical thin-walled structure. Due to complicated structure performance, this structure is susceptible to elephant’s foot buckling. This paper presents a novel method of strengthening cylindrical shells against elephant’s foot buckling in which a small amount of fiber-reinforced polymer(FRP)composite, used at critical location, can effectively eliminate the problem and increase the buckling. Numerical analyses including linear eigenvalue buckling analyses and elastic-plastic eigenvalue buckling analyses are carried out to investigate the structural behavior and stability behavior of ground-supported flat-bottomed cylindrical steel silo.