| 一种桥梁构件刚度利用有限权量进行平差的最小二乘解模态识别方法 |
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| 引用本文： | 陈明宪,袁红茵.一种桥梁构件刚度利用有限权量进行平差的最小二乘解模态识别方法[J].公路交通科技,2005,22(11):110-114. |
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| 作者姓名： | 陈明宪 袁红茵 |
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| 作者单位： | 1. 湖南省交通厅,湖南,长沙,410011
2. 广州市市政园林局,广东,广州,510060 |
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| 摘 要： | 提出一种利用桥梁低阶模态测试结果对桥梁结构抗弯刚度采用有限权量进行间接平差的最小二乘解识别方法。通过对1座3跨变截面连续箱梁实桥梁体抗弯刚度结合桥梁现场检测及数值模拟计算识别结果表明,此方法对于多种测试误差表现相当稳定,可满足工程精度要求。
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| 关 键 词： | 桥梁构件刚度 有限权量平差 最小二乘解 模态识别方法 |
| 文章编号： | 1002-0268(2005)11-0110-05 |
| 收稿时间： | 2004-09-22 |
| 修稿时间： | 2004年9月22日 |
A Flexural Rigidity Modal Identification Method of Least-square Solutions with Finite Power Adjustment for Bridge Structural Members |
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| CHEN Ming-xian,YUAN Hong-yin.A Flexural Rigidity Modal Identification Method of Least-square Solutions with Finite Power Adjustment for Bridge Structural Members[J].Journal of Highway and Transportation Research and Development,2005,22(11):110-114. |
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| Authors: | CHEN Ming-xian YUAN Hong-yin |
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| Institution: | 1.Hunan Communication Bureau, Hunan Changsha 410011, China; 2.Bureau of City Engineering and Gardening of Guangzhou Municipality, Guangdong Guangzhou 510060, China |
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| Abstract: | In this paper,least-square solutions with finite power adjustment method of flexural rigidity identification method for bridge structural members is developed by use of low order mode test result.Also a numerical example of three-span full scale continous beam is analyzed in order to identify the flexural rigidity of structures and to verify the sensitivity of test errors.The analyzed result shows that the method can meet the engineering requirements. |
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| Keywords: | Bridge flexural rigidity Finite power adjustment Least-square solutions Mode identification method |
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