已停运钢桁梁桥疲劳应力谱的计算机模拟

Computer Simulating of Fatigue Stress Spectra of a Railway Bridge Closed up

本文以某实桥为例，提出已停运钢桁梁桥的应力谱计算机摸拟方法，估计出该桥的疲劳剩余寿命，为该桥的复修提供了参考依据之一，也为运营多年甚至已停运桥梁的疲劳剩余寿命的评估提供了一种新的方法．

With the aid of computer,the method used to simulate the fatigue stress spectra of a railway bridge which has been closed up is presented in this paper.Thesuplus Life-span of the bridge is reckoned by this methed.This method canbe used to estimate the surplus life-span of a bridge which has been open totrafficc for many years or which has been closed up.