桥梁健康监测系统在线结构分析及状态评估方法

发布时间：2018-06-24 13:40

本文选题：桥梁工程 + 健康监测　；参考：《桥梁建设》2014年01期

【摘要】：为实时在线评估桥梁结构实测荷载与响应状态的相关性,提出桥梁健康监测系统的在线结构分析及状态评估方法。编制有限元分析程序内核,在程序内核中内嵌桥梁结构有限元模型,通过授权的数据库接口,读取健康监测系统中的实时荷载数据,对荷载数据进行统计分析,然后计算结构的理论响应值,并与健康监测系统中的结构实测响应值进行对比,对结构行为进行评估。某桥主桥为主跨460m的五跨连续双塔双索面半飘浮体系斜拉桥,应用该方法对该桥进行在线分析和状态评估,评估结果显示,根据实测荷载分析得到的结构响应和实测结构响应吻合较好,结构荷载和响应具有线性相关性,结构运营正常。
[Abstract]:In order to evaluate the relationship between the measured load and the response state of bridge structure in real time, an on-line structure analysis and state evaluation method of bridge health monitoring system is proposed. The finite element analysis program kernel is compiled, and the finite element model of bridge structure is embedded in the program kernel. Through the authorized database interface, the real-time load data in the health monitoring system are read, and the load data are statistically analyzed. Then the theoretical response value of the structure is calculated and compared with the measured response value of the structure in the health monitoring system to evaluate the structural behavior. The main bridge of a certain bridge is a five-span continuous cable-stayed bridge with two towers and two cable planes with a main span of 460 m. The on-line analysis and state evaluation of the bridge are carried out by using this method. The evaluation results show that, The structural response obtained from the analysis of the measured load is in good agreement with the measured structural response. The structural load and response are linearly correlated and the structure is in normal operation.
【作者单位】：长安大学公路学院;宁波通途投资开发有限公司;中铁大桥局集团桥科院有限公司;
【分类号】：U446.2

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