铁道标准设计2016，Vol.60Issue(6)：38-42,5.DOI:10.13238/j.issn.1004-2954.2016.06.009
大跨度钢桁梁桥静动力性能试验研究
Test Research on Static and Dynamic Performances of Large Span Steel Truss Girder Bridge
摘要
Abstract
Taking the 64 m through steel truss bridge as the research object, the test research on bridge static and dynamic performances is completed with numerical analysis and field test. The results show that under static load the measured stress and deflection of the bridge are less than the theoretical calculation, the deflection and the stress check coefficient are slightly larger than the standard normal values, the relative residual of deflection and stress meet the standard requirement, and the stresses of the two main trusses are in balance. The operating performance indicators under trains of different speed can basically meet the standard requirements, but the measurements are larger than that of similar double wire steel truss bridge. The empty and weight mixed trains cause greater vibration. Overall, the bearing capacity and service condition of the bridge basically meet the standard requirements and in good elastic working condition, but the bridge structure overall rigidity is weak with small emergency capacity. Thus, it is recommended that the entire bridge stiffness should be strengthened and the real-time bridge dynamic response monitored.关键词
大跨度/下承式钢桁梁桥/静动力性能/试验/数值分析/承载能力Key words
Large span/Through steel truss girder bridge/Static and dynamic performance/Test/Numerical analysis/Bearing capacity分类
交通工程引用本文复制引用
陈树礼,刘永前,张彦兵..大跨度钢桁梁桥静动力性能试验研究[J].铁道标准设计,2016,60(6):38-42,5.基金项目
国家高技术研究发展计划(863计划)(2009AA11Z102),铁道部科技研究开发计划(重大课题)(2012G011-A) （863计划）
