摘要
桥梁的动力特性包括自振频率、阵型和阻尼比,它是评估桥梁整体性能的重要参数。针对花瓶独柱墩连续宽箱梁桥发生异常振动的问题,采用有限元分析软件Ansys对该桥的振动特性进行分析,并结合DASP动态信号分析软件,对该桥进行了现场模态试验,从而验证了模型的可靠性,对车行振动舒适度进行了评价,同时也分析了箱梁桥异常振动的原因,提出了在独柱墩上外扩增设支座,提高结构刚度的维修处置建议,可为同类桥梁的振动病害处治提供借鉴和参考。
The dynamic characteristics of bridges include natural frequency,formation,and damping ratio,which are important parameters for evaluating the overall performance of bridges.Aiming at the problem of abnormal vibration of a continuous wide box girder bridge with vase single column piers,the finite element analysis software Ansys was used to analyze the vibration characteristics of the bridge.In combination with DASP dynamic signal analysis software,field modal tests were conducted on the bridge,verifying the reliability of the model,evaluating the comfort of vehicle vibration,and analyzing the causes of abnormal vibration of the box girder bridge.It was proposed to expand the installation of bearings on and outside the single column piers,The maintenance and disposal suggestions for improving the structural stiffness can provide reference for the treatment of vibration diseases of similar bridges.
作者
高毅雄
GAO Yi-xiong(Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha,Hunan 410000,China)
出处
《黑龙江交通科技》
2023年第6期70-72,共3页
Communications Science and Technology Heilongjiang
关键词
动力特性
模态试验
有限元分析
dynamic characteristics
modal test
finite element analysis
