【作者】 郑万泔； 韩晓林； 邓昌；

【Author】 ZHENG Wan-gan, HAN Xiao-lin, DENG Chang(Nanjing Analyzer Software Engineering Company, Nanjing 210018;SouthEast University, Naning210096)

【机构】 南京安正软件公司 东南大学；

【摘要】 随着大型柔性桥梁建设的迅速发展,其长期运行的安全评估得到很大关注。通过试验模态分析对验证设计、建立结构的动力学模型以及运行状态的评估具有重要意义。本文通过作者在有关单位的协助下进行的大量桥梁模态试验和竣工试验及在线监测,提出了一种节省试验成本的基于环境激励下桥梁模态试验方法,取得了较为正确的模态频率、阻尼及较理想振型,并为在线识别模态提供了依据。更多还原

【Abstract】 Along with the rapid development of the construction of the flexible bridge, evaluating the running state of the bridge has been paid great attention. Model experiment had great meanings in proving design, building the dynamic model of the bridge and the evaluation of the running state of the bridge. The author did many modal experiments, complete experiments and monitoring online with the assistance of the related units, advanced a new method based on environmental excitation, this method saved much cost of the experiment and obtained perfect modal frequency, damping and modal shape. It can provide reference for the identify model online.更多还原