| 环境振动下的钢管混凝土拱桥试验与分析 |
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| 引用本文： | 王立宪,狄生奎,刘云帅,花尉攀. 环境振动下的钢管混凝土拱桥试验与分析[J]. 工程抗震与加固改造, 2011, 33(1): 67-71,79 |
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| 作者姓名： | 王立宪 狄生奎 刘云帅 花尉攀 |
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| 作者单位： | 兰州理工大学土木工程学院; |
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| 基金项目： | 甘肃省科技支撑计划项目(No.0708GKCA002); 甘肃省自然科学基金暨中青年科技基金项目(3ZS062-B25-031) |
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| 摘 要： | 环境振动试验是检测大型桥梁结构的主要方法,检测得到的模态参数是判定桥梁健康状况的重要依据.本文基于随机振动理论,从雁滩黄河大桥在环境激励下获得的加速度测试信号中提取高信噪比的响应信号,采用频域峰值法和时域随机子空间法识别得到了该桥的固有频率、阻尼比和振型等模态参数,并与有限元模型计算结果进行了对比,验证了识别结果的可靠...
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| 关 键 词： | 环境激励 参数识别 模态分析 拱桥 |
Ambient Vibration Testing and Analysis of Concrete Filled Steel Tube Arch Bridge |
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| Wang Li-xian,Di Sheng-kui,Liu Yun-shuai,Hua Wei-pan. Ambient Vibration Testing and Analysis of Concrete Filled Steel Tube Arch Bridge[J]. Earthquake Resistant Engineering and Retrofitting, 2011, 33(1): 67-71,79 |
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| Authors: | Wang Li-xian Di Sheng-kui Liu Yun-shuai Hua Wei-pan |
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| Affiliation: | Wang Li-xian,Di Sheng-kui,Liu Yun-shuai,Hua Wei-pan(School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | Ambient vibration test is the main method of detecting a large bridge structure,Modal parameters is important to determine the health status of the bridge.Based on random vibration theory,as a high signal-to-noise ratio response,virtual response is obtained from the measured acceleration signal of Yantan Yellow River Bridge of Lanzhou under ambient excitation.Yantan Yellow River bridge 's modal parameters,such as natural frequency,damping ratio and mode of vibration,are identified by using the peak picking ... |
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| Keywords: | ambient vibration parameter identification modal analysis arc bridge |
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