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基于监测数据的永宁黄河公路大桥动力特性分析 预览

Analysis on Dynamic Characteristics of Yongning Yellow River Highway Bridge Based on Monitoring Data
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摘要 首先介绍频域分解法理论基础和算法实现,然后以永宁黄河公路大桥为背景,介绍结构健康监测系统在实际桥梁中的应用,基于监测数据采用频域分解法进行桥梁结构动力特性分析,将识别结果与成桥荷载试验和理论计算结果进行对比,验证了频域分解用于大跨度桥梁结构运营模态分析的可靠性和有效性,识别结果可以作为桥梁结构安全状态等级划分与评定依据的一项重要指标。 This paper firstly introduces the theoretical basis and algorithm implementation of the frequency domain decomposition, and then introduces the application of structure health monitoring system in the practical bridges by the background of Yongning Yellow River Highway Bridge. Based on the monitoring data, the frequency domain decomposition is used to analyze the dynamic characteristics of bridge structure.The identification result is compared with the results of load test and theoretical calculation of the finished bridge to verify the reliability and efficiency of the frequency domain decomposition used for the modal analysis of long-span bridge structure. The identification result can be used as an important index to classify and evaluate the safety status of bridge structure.
作者 薛勇 Xue Yong
出处 《城市道桥与防洪》 2019年第1期84-87,I0008共5页 Urban Roads Bridges & Flood Control
关键词 永宁黄河公路大桥 结构健康监测 频域分解法 模态识别 动力特性分析 Yongning Yellow River Highway Bridge structure health monitoring frequency domain decomposition modal identification analysis of dynamic characteristic
作者简介 薛勇(1985-),男,工程师,从事公路桥梁施工及运营管理工作。
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