| 人行桥振动舒适度评价的频域方法 |
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| 引用本文： | 党振宇,陈璞.人行桥振动舒适度评价的频域方法[J].科学技术与工程,2009,9(14). |
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| 作者姓名： | 党振宇 陈璞 |
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| 作者单位： | 1. 哈尔滨工业大学交通科学与工程学院,哈尔滨,150090
2. 杭州市城建设计研究院有限公司,杭州,310001 |
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| 摘 要： | 近几年来新建人行桥的跨度越来越大,结构也越来越轻柔,随之而来的问题是如何来评价其振动舒适度。在振动舒适度评价中,目前已普遍采用加速度均方根值作为评价指标,采用随机振动理论在频域上求解可以直接得到结构反应的功率谱密度,而功率谱密度曲线下的面积即是响应的均方值。提出了人行桥人致振动计算的频域方法,还推导了带调谐质量阻力器(TMD)的人行桥随机振动模型,然后确定了人行桥振动舒适度评价标准,其研究结果可为人行桥振动舒适性设计提供参考。
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| 关 键 词： | 人行桥 人致振动 频域分析 舒适度评价 |
Vibration Serviceability Analysis of Footbridge in Frequency Domain |
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| DANG Zhen-yu,CHEN Pu.Vibration Serviceability Analysis of Footbridge in Frequency Domain[J].Science Technology and Engineering,2009,9(14). |
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| Authors: | DANG Zhen-yu CHEN Pu |
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| Institution: | School of science & Engineering on Communication;Harbin Institute of Technology;Harbin 150090;P.R.China;Hangzhou Urban Construction Design and Research Institute1;Hangzhou 310001;P.R.China |
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| Abstract: | The longer spans of new footbridges,accompanied with aesthetic requirements for slenderer structural appearance has created new challenges that how to evaluate vibration serviceability of slender structures under human-induced dynamic loading during the last few years.In the context of vibration serviceability,it is nowadays usual to use RMS values of acceleration as criteria for assessment.Using random vibration theory in frequency domain,it could obtain power spectral density of structure response directl... |
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| Keywords: | footbridge human-induced vibration analysis in frequency domain comfort assessment |
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