| 基于参数更新的体外索张力识别方法 |
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| 引用本文： | 王建民,王国亮,聂建国.基于参数更新的体外索张力识别方法[J].北方交通大学学报,2011(1):89-91,102. |
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| 作者姓名： | 王建民 王国亮 聂建国 |
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| 作者单位： | [1]交通部公路科学研究院,北京100088 [2]清华大学,北京100084 |
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| 基金项目： | 交通部西部交通建设科技项日资助（07-22140121-02-003） |
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| 摘 要： | 以有限元分析模型参数更新理论为基础，提出了一种通过测试自振频率得到体外索张力的新方法，其参数更新的目标是使试验实测体外预应力体系的频率与有限元模型计算所得频率最为接近，进而识别出体外索张力大小，经实例验证，用所提出的方法来识别体外索的张力具有很高的精度．
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| 关 键 词： | 桥梁工程 体外索 自振频率 张力 参数更新 |
Tension force identification of external prestressing cables based on parameters updating method |
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| WANG Jianrnin,WANG Guoliang,NIE Jianguo.Tension force identification of external prestressing cables based on parameters updating method[J].Journal of Northern Jiaotong University,2011(1):89-91,102. |
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| Authors: | WANG Jianrnin WANG Guoliang NIE Jianguo |
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| Affiliation: | 1. Research Institute of Highway Ministry of Communications, Beijing 100088, China; 2.Tsinghua University, Beijing 100084, China) |
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| Abstract: | Based on finite element model （FEM） parameters updating theories, a new method to estimate the tension force of the external prestressing cables is presented through measuring natural frequencies. The objective of the model updating is to reduce the difference between the calculated and the measured frequencies, and the tension force are identified. The results of the experiments indicate that the proposed method can identify tension force accurately. |
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| Keywords: | bridge engineering external prestressing cables natural frequency tension force parameters updating |
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