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《Journal of Vibration and Shock》 2011-09
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Fatigue analysis of cast steel welded joint under dynamic load of high speed train

WANG Guo-bo1,2,XIE Wei-ping2,YU Yan-li2 (1.Engineering Research Center of Railway Environmental Vibration and Noise,Ministry of Education,Nanchang 330013,China; 2.College of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China )  
A new structure type,called the unification of bridge and building,was adopted in Wuhan railway station of the passenger special line from Wuhan to Guangzhou.Much attention must be paid to the fatigue life of such long-span steel structure because of the long-term dynamic load.A refined finite element calculation model of ten tubes welded cast steel joint,including the welding seam,was built and its fatigue life was analyzed based on hot spot stress method and Miner linear cumulative damage theory.The results show that the dynamic stress caused by train load has little influence on the fatigue life of cast steel joint,and the large-steel structure can meet the demand of service life of 100 years.The analysis method can provide reference to fatigue life evaluation of similar structures in the future in China.
【Fund】: 铁路环境振动与噪声教育部工程研究中心开放基金项目;; 教育部2008年博士点基金项目(200804970007);; 铁道部2007年重大科技攻关项目(A类);; 2008年湖北省建设科技计划项目(K200716)
【CateGory Index】: TU391
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