钢桁梁桥结构安全性分析

摘要

结合拟建通榆河大桥实例,运用MIDAS/Civil 2006建立有限元模型,对桥梁各个施工节段进行仿真模拟,计算桥梁钢桁架的受力,分析钢桁架结构的受力规律,并针对其受力规律加固桥梁结构.另外,对钢桁架桥梁的稳定性、杆件抗疲劳特性、节点板强度等进行计算,确保桥梁在施工过程中的安全性.%In this paper, we take the to -be -built Tongyu River Bridge as example and use MIDAS/Civil2006 to set up finite element model, to simulate all construction nodes of steel truss girder bridge. We calculated stress on steel truss girder and analyzed the rules of stress on steel truss girder structure, and reinforced bridge structure accordingly. Besides, we carried out calculation of stability of steel truss girder bridge , anti-fatigue characteristics of members, strength of gusset plates, to assure safety of bridge during construction.