| 桥梁结构移动载荷识别的新方法 |
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| 引用本文： | 张方,秦远田,邓吉宏.桥梁结构移动载荷识别的新方法[J].南京航空航天大学学报,2006,38(1):22-26. |
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| 作者姓名： | 张方 秦远田 邓吉宏 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016
2. 沈阳飞机设计研究所结构强度室,沈阳,110035 |
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| 基金项目： | 航空科学基金(00I52075)资助项目 |
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| 摘 要： | 桥梁结构的移动载荷识别技术是桥梁工程建设的技术难点之一。本文在载荷匀速移动的基础上,将时域识别的方法推广运用到变速运动的载荷,运用广义正交变换技术研究了移动载荷识别的新方法,并推导出了在广义正交域下移动载荷识别的数学模型。通过计算机仿真算例验证了该理论的正确性及在工程运用中的可行性。该模型适用于桥梁结构的移动动态载荷识别,为移动载荷识别技术的发展打下一定的基础。
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| 关 键 词： | 载荷识别 振动 移动载荷 正交多项式 桥梁结构 |
| 文章编号： | 1005-2615(2006)01-0022-05 |
| 收稿时间： | 2005-06-27 |
| 修稿时间： | 2005-10-13 |
Dynamic Moving Load Identification Method for Bridge Structure |
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| Zhang Fang,Qin Yuantian,Deng Jihong.Dynamic Moving Load Identification Method for Bridge Structure[J].Journal of Nanjing University of Aeronautics & Astronautics,2006,38(1):22-26. |
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| Authors: | Zhang Fang Qin Yuantian Deng Jihong |
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| Abstract: | The dynamic moving load identification model with the non-fixed velocity in time domain is established.The key technology of the moving load identification is realized with the certain precision by using the generalized ortho-polynomial method,and the dynamic moving load identification model in generalized ortho-polynomial domain is established.The exactness in the theory,the feasibleness in engineering and the usability of the method are proved by using the dynamic calibration technology and the computer simulation. Results show that the model is suitable for the moving load identification of the bridge and provides a foundation for the development of the dynamic moving load identification. |
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| Keywords: | load identification vibration moving load ortho-polynomial bridge structure |
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