铁路栓焊钢桥疲劳设计理论的研究与革新

Research and Innovation of Fatigue Design Theory for High Strength Bolt and Weld Steel Railway Bridges

疲劳设计是铁路钢桥设计中的重要部分。本文介绍随着铁路钢桥栓焊技术的发展，疲劳设计理论不断研究革新， 在研究革新中建立了一套抗力、作用力计算方法和设计规定， 并已纳入了有关规范。

Fatigue checking computation is an important part in steel railway bridge design.This paper introduces the research and innovation efforts made in the area of fatigue design theory along with the development of high strength bolt and weld bridge technique.In the course a set of calculation methods for fatigue load and fatigue resistance as well as design rules have been established and brought into China′s Steel structure of Railway Bridge Standard and other relevant specifications.The paper also introduces the process of fixing on the coefficients provided in the codes.