Fatigue damage reliability analysis for Nanjing Yangtze river bridge using structural health monitoring data

来源期刊：中南大学学报(英文版)2006年第2期

论文作者：何旭辉 陈政清 余志武 黄方林

文章页码：200 - 203

Key words：fatigue damage reliability evaluation; railway steel bridge; structural health monitoring; real-time rain-flow counting method

Abstract: To evaluate the fatigue damage reliability of critical members of the Nanjing Yangtze river bridge, according to the stress-number curve and Miner s rule, the corresponding expressions for calculating the structural fatigue damage reliability were derived. Fatigue damage reliability analysis of some critical members of the Nanjing Yangtze river bridge was carried out by using the strain-time histories measured by the structural health monitoring system of the bridge. The corresponding stress spectra were obtained by the real-time rain-flow counting method. Results of fatigue damage were calculated respectively by the reliability method at different reliability and compared with Miner s rule. The results show that the fatigue damage of critical members of the Nanjing Yangtze river bridge is very small due to its low live-load stress level.