关于城市合杆结构中横臂的疲劳强度分析

摘要:

城市综合杆中，有一种长悬臂的结构，用以挂载信号灯或摄像头，标志牌。悬臂属于长柔性结构，由于空气的流体特性，很容易引起结构的振动，从而导致结构产生疲劳效应。计算时应根据不同的振动型式，考虑不同的疲劳荷载，并选取疲劳等级较高的接头型式，可保证长臂结构的安全。

Abstract:

There is a kind of steel structure with long cantilever arm in the urban integrated pole, which is used to mount signal lights or cameras and signboards. The cantilever arm is a long flexible structure. Due to the fluid characteristics of air, it is easy to cause the vibration problem , and resulting in the fatigue effect in the structure. In the calculation, different fatigue loads should be considered according to different vibration types, and the appropriate joint type with high fatigue category should be selected to ensure the safety of the long arm structure.