Vibrationnnduced Probabilistic Fatigue Life Assessment of a Suspension Bridge Carrying both Railway and Highway Traffic
In this paper, a fatigue reliability model integrated with stochastic stress concentration factor (SCF) is proposed based on the traditional S-N curve method in combination with the Miner s damage cumulative rule. Firstly, three probabilistic fatigue modelling methods , namely mean stress range method, integration method , and effective stress range method are briefed. Then, the proposed fatigue reliability model is formulated integrating with the probability distribution of hot spot stress range, and it is validated by conducting probabilistic fatigue life assessment of the sus -pension Tsing Ma Bridge (TMB) with use of the long-term strain measurement data from the structural health monitoring (SHM) system permanently installed on the bridge. Finally, the joint probability density function (PDF) of hot spot rainflow stress range as well as the failure probability and reliability index versus fatigue life are obtained.
X.W.YE Y.Q.NI
Department of Civil and Structural Engineering , The Hong Kong Polytechnic University, Hung Horn, Kowloon, Hong Kong, China
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
386-396
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）