【摘要】 以新密市溱水路大桥为研究对象,采用Midas/Civil有限元程序,建立了该桥的空间力学计算模型,计算了桥梁结构的自振频率和振型,结合已建成的多座无背索部分斜拉桥振动特性分析结果,对桥梁动力特性和刚度特点进行了讨论.计算结果可为该类型桥梁的设计、施工及使用阶段的健康检测和维护提供借鉴.更多还原

【Abstract】 Taking Qinshuilu Bridge in Xinmi City as the research object,the finite element program Midas/Civil was used to establish the space mechanics model of the bridge and calculate the natural frequency of vibration and the mode of vibration of the bridge structure.Combining with vibration characteristic analysis results of the many completed no back-stays partially cable-stayed bridges,the dynamic characteristics and rigidity features of bridges were discussed.The results could provide references for this bridge’s design,construction and the health inspection and maintenance in the use phase.更多还原