大连理工大学学报2016，Vol.56Issue(6)：600-607,8.DOI:10.7511/dllgxb201606007
突然断索后双吊索形式自锚式悬索桥安全分析
Safety analysis of self-anchored suspension bridge with dual-shaped hanger after sudden breakage of hanger
摘要
Abstract
Hangers are essential security parts of the suspension bridge structure.It is a general phenomenon that hangers have serious corrosion problems,and the hangers may fail suddenly under fatigue and corrosion effect.Existing research and engineering examples show that the breakage of a hanger can lead to the successive breakage of other hangers and then result in the collapse of the whole bridge at worst.Dual-shaped hanger can improve the safety of the suspension bridge related to the hanger failure.To research into the safety improvement and dynamic response of the suspension bridge after the breakage of the dual-shaped hanger,the study on the response of suspension bridge after hanger breakage is carried out using nonlinear static and dynamic methods,based on a 200 m self-anchored suspension bridge with concrete girder.The analytical results show that the dual-shaped hanger can reduce the response of suspension bridge after hanger breakage and improve the safety of the whole bridge during the service and maintenance stage.The conclusion can also provide a reference for the replacement,maintenance and reinforcement of suspension bridge hangers.关键词
自锚式悬索桥/吊索断裂/安全分析/双吊索Key words
self-anchored suspension bridge/breakage of hanger/safety analysis/dual-shaped hanger分类
交通工程引用本文复制引用
邱文亮,吴广润,张哲,李恬..突然断索后双吊索形式自锚式悬索桥安全分析[J].大连理工大学学报,2016,56(6):600-607,8.基金项目
国家自然科学基金资助项目(51178080). （51178080）
