基于疲劳累积损伤的板式橡胶伸缩装置仿真分析

以公路板式橡胶伸缩装置为研究对象,在荷载与应力谱模拟的基础上,根据螺栓、焊点以及混凝土的疲劳S-N曲线,按照Miner准则,对板式橡胶伸缩装置主要部件进行累计损伤分析,并进行板式橡胶伸缩装置疲劳寿命估算。结果表明,采用疲劳损伤分析方法可以得到板式橡胶伸缩装置各部件破坏的先后顺序,与现场调查的板式橡胶伸缩装置破坏次序与特征比较吻合。

Simulative Analysis of Plate Rubber Expansion Device Based on Fatigue Cumulative Damage

Adopting the Miner standards,this paper studied the cumulative damage and fatigue life of highway plate rubber expansion devices according to the S-N curve of the bolt,spot weld and concrete based on simulation of load and stress spectrum.The results show that the analysis method of fatigue damage can get the destruction orders of all the components of the plate rubber expansion device,which are coincide with the characteristics of the actual plate rubber expansion device.