自释放预顶力弹性支撑结构的疲劳问题研究

The Fatigue Study of Self-Released Prestressed Elastic Support Structures

介绍了一种用于桥梁加固的自释放预顶力弹性支撑结构,分析了它在疲劳破损作用下的影响和在高周疲劳下的特性。结合依托工程,从断裂力学的角度计算出了支撑结构的保守使用寿命。这种结构制作简单,使用效果好,对增设支撑加固桥梁这种新型加固方法的推广应用乃至对丰富整个桥梁加固领域有着积极重要的作用。

This paper introduce the self-released prestressed elastic support structure used in bridge reinforcement, and analyzed both its influence under the effect of fatigue damage and its characteristics on condition ofgigacycle fatigue. Also calculated that this kind of support structure can be used for not less than 24 years from the perspective of fracture mechanics. The structure has a very important role in the popularization and application of the new method of bridge reinforcement by adding support to strengthen bridges, moreover, it also play a positive role for the improvement of bridge reinforcement field.