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| 桥梁风振试验颤振导数识别的Ibrahim时域优化研究 | |
| 引用本文： | 杨转运,刘会,张金梅,刘鹏,王羽.桥梁风振试验颤振导数识别的Ibrahim时域优化研究[J].武汉理工大学学报(交通科学与工程版),2009,33(5):908-910,915. |
| 作者姓名： | 杨转运 刘会 张金梅 刘鹏 王羽 |
| 作者单位： | 1. 重庆大学土木工程学院,重庆,400044;四川建筑职业技术学院,德阳,618000 2. 四川建筑职业技术学院,德阳,618000 3. 重庆交通大学土木建筑学院,重庆,400074 |
| 基金项目： | 国家自然科学基金项目(批准号:50778185);;重庆市自然科学基金项目(批准号:2007BB6132)资助 |
| 摘 要： | 基于R.H.Scanlan提出的自由振动法求解桥梁颤振导数实验量很大,且在提取交叉导数的过程中,一方面要求模型的竖向运动和扭转运动在所有的风速下都具有相同的频率比和阻尼比是很难达到的,另一方面非耦合导数的识别误差将带到耦合导数中.文中基于Ibrahim时域的改进方法,应用变尺度优化算法进行提取桥梁断面的全部颤振导数,研究结果表明应用此方法来解决非线性参数辨识问题比最小二乘法好. |
| 关 键 词： | 自由振动法 颤振导数 优化 |
Optimized Method for Extracting Fremitus Derivative Based on Ibrahim Method |
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| Yang Zhuanyun,Liu Hui,Zhang Jinmei,Liu Peng,Wang Yu.Optimized Method for Extracting Fremitus Derivative Based on Ibrahim Method[J].journal of wuhan university of technology(transportation science&engineering),2009,33(5):908-910,915. | |
| Authors: | Yang Zhuanyun Liu Hui Zhang Jinmei Liu Peng Wang Yu |
| Institution: | College of Civil Engineering;Chongqing University;Chongqing 400044;Sichuan College of Architecture Technology;Deyang 618000;Chongqing Jiaotong University;Chongqing 400074 |
| Abstract: | The experimental amount for solving fremitus derivative of bridge by free vibration method which was brought up by R.H.Scanlan is very large,and in process of extracting cross derivative it is difficult that frequency ratio and damping ratio of vertical motion and torsional motion of model is same in all wind speed. Besides,the discriminating error of uncoupled derivative will be in coupled derivative. The paper is an improved method based on Ibrahim Time Domain. Extracting all fremitus derivative of bridge... |
| Keywords: | free vibration method fremitus derivative optimized |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |