| 基于不同残差的桥梁结构模型修正 |
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| 引用本文： | 黄民水,朱宏平.基于不同残差的桥梁结构模型修正[J].武汉理工大学学报(交通科学与工程版),2009,33(4):703-706. |
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| 作者姓名： | 黄民水 朱宏平 |
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| 作者单位： | 1. 华中科技大学土木工程与力学学院,武汉,430074;武汉工程大学交通研究中心,武汉,430073
2. 华中科技大学土木工程与力学学院,武汉,430074 |
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| 基金项目： | 国家自然科学基金项目资助 |
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| 摘 要： | 由于建模和分析过程中的众多不确定因素,有限元分析预测的响应与实际结构响应不可避免地存在偏差,因此必须对有限元模型进行修正.文中提出了一种基于不同残差的桥梁结构模型修正方法,介绍了频率残差和振型残差的概念,目标甬数的确定和设计参数的选择方法.对一根简支梁进行了仿真分析,结果表明该方法简单可行.基于振动测试数据,对一个桥梁工程实例进行模型修正,修正后的桥梁有限元模型的动力特性更加趋近现场振动测试值.
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| 关 键 词： | 桥梁结构 频率残差 振型残差 模型修正 |
Model Updating of Bridge Structures Based on Different Residuals |
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| Huang Minshui,Zhu Hongping.Model Updating of Bridge Structures Based on Different Residuals[J].journal of wuhan university of technology(transportation science&engineering),2009,33(4):703-706. |
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| Authors: | Huang Minshui Zhu Hongping |
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| Institution: | School of Civil Engineering and Mechanics;HUST;Wuhan 430074;Transportation Research Center;WIT;Wuhan;430073 |
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| Abstract: | Because of the uncertainty in the process of modeling and analysis,there are inevitably differences between structural responses obtained by FEM and test in site,that is,the FEM needs to be updated.In the paper,a method of bridge structure model updating based on different residuals is presented.Firstly,the concepts of frequency residual and mode shapes residual are introduced,the determination of objection function and selection methods of updated parameters are emphatically investigated.Secondly,a simulat... |
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| Keywords: | bridge structure frequency residual mode shapes residual model updating |
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