Fatigue Performance Assessment of Hangers in a Rigid Tied Arch Bridge under Train Loads

摘要：

　　Steel truss arch bridge is an important structural type for high-speed railway bridges with long spans,on which the fatigue assessment of rigid hangers under long-term train load is an important concern.In this paper,the Nanjing Dashengguan Bridge,a six-line railway steel arch bridge with three planes of truss arches and the largest span in the world,is taken as a case study.First,fatigue performance assessment of one shortest hanger is carried out based on dynamic strain monitoring data in the year 2015.Second,the fatigue damage distribution of full-field hangers is analyzed based on a calibrated finite element model.Finally,an engineering approach for fatigue performance assessment of full-field hangers is proposed based on annual train volume.Consequently,the fatigue damage of short hangers in the middle truss arch is the most remarkable,followed by the side truss arch on the downstream side(B-S railway)and then the side truss arch on the upstream side(B-W-C railway),which should be paid more attention in daily maintenance.

关键词： Steel truss arch bridge Rigid hanger Fatigue damage Structural health monitoring Finite element model

作者: Wen Zhong You-Liang Ding Yong-Sheng Song Han-Wei Zhao

作者单位: Key Laboratory of C&PC Structures of the Ministry of Education,Southeast Univ.,Nanjing,China Jinling Institute of Technology,Nanjing,China

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 266-271

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）