西南交通大学学报2012，Vol.47Issue(3)：379-386,8.DOI:10.3969/j.issn.0258-2724.2012.03.005
开口肋正交异性钢桥面疲劳设计参数研究
Fatigue Design Parameters for Orthotropic Steel Decks of Single Plane Cable-Stayed Bridges
摘要
Abstract
Experiment and finite element analysis (FEA) were conducted on the orthotropic steel decks of two single plane cable-stayed bridges in Chongqing municipality, China, to verify the fatigue design parameters. A full scale specimen with the actual connection details of the longitudinal ribs, crossbeams and deck plates was used for fatigue test. Vertical and horizontal fatigue loads were applied to the specimen under equivalent applied stresses for 20 million cycles. FEA was done to extend the ranges of design parameters verified by fatigue tests, such as cutout shape ( apple-shaped, key-shaped and circular) , and thicknesses of plates and deck pavement. The experimental and FEA results shown that the crossbeam and pavement thickness played a significant role on fatigue performances of the orthotropic steel decks. The principal tension stress (13.7 MPa) near the apple-shaped cutout was the smallest compared with those near the key-shaped and circular cutouts, so that the apple-shaped cutout was the best in terms of fatigue performances. The plate at least 16 mm thick and the apple-shaped cutout were recommended for the crossbeam of the orthotropic steel decks.关键词
正交异性钢桥面板/单索面斜拉桥/疲劳/试验/有限元分析Key words
orthotropic steel deck/ single plane cable-stayed bridge/ fatigue/ experiment/ FEA分类
建筑与水利引用本文复制引用
叶华文,徐勋,强士中,侯苏伟..开口肋正交异性钢桥面疲劳设计参数研究[J].西南交通大学学报,2012,47(3):379-386,8.基金项目
国家863计划资助项目(2008AA11Z101) （2008AA11Z101）
中央高校基本科研业务费专项资金资助项目(SWJTU11BR011) （SWJTU11BR011）
