钢管混凝土系杆拱桥建模技术及动力特性分析

The Spatial Modeling for CFST Arch Bridge and Its Dynamic Characteristics Analysis

某一市政钢管混凝土系杆拱桥,需要进行可靠度评价。首先研究了桥梁的建模技术,并对桥梁进行动力特性计算,得到其模态参数,为该桥的动力测试提供一些参考,也为该桥的检测加固提供理论数据。通过对桥梁的动力性能评价,有助于对桥梁的安全诊断评估。结果显示,该桥梁的实际刚度较大,整体性能较好,具有良好的动力性能。

Aiming at a municipal CFST archbridge, the research needs to assess the reliabilityof bridge.Therefore this paper researched thetechnology of its modeling, through the calculatingthe bridge's dynamic characteristics, research gotthe modal parameters, provided some reference forthe dynamic test, and provided the theoretical datafor the inspection and rehabilitation;meanwhile,evaluated the bridge's dynamic characteristics.Therefore it is helpful to assess the safety diagnosisof the bridge.Result shows that the rigidity of thebridge is large, and the whole performance and thedynamic performance are fine.