针对某市改造工程中需要替换标志牌的旧L型标志牌杆,建立了包括面板、悬臂和立柱的有限元模型,分析了结构的模态,得到了自振频率,计算了结构在自重以及风荷载作用下的位移、应力响应,并结合规范要求,以确认其继续使用的安全性。 Aiming at the old L-shaped sign pole which needs to replace the signboard in a city reconstruction project, a finite element model including a panel, a cantilever and a column is established, modes of the structure are analyzed, natural frequency is obtained, Wind load under the action of the displacement, stress response, combined with the specification requirements to confirm its continued use of safety.