| Estimation of peak relative velocity and peak absolute acceleration of linear SDOF systems |
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| 作者姓名： | Jianwei Song Yi-Lun Chu Zach Liang George C. Lee |
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| 作者单位： | Department of Civil Structural and Environmental Engineering University at Buffalo State University of New York，Department of Civil Structural and Environmental Engineering University at Buffalo State University of New York，USA Research Associate Professor，USA Professor |
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| 基金项目： | Supported by： the Federal Highway Administration Under Grant No. DTFH61-98-00094;Acknowledgement The authors greatly acknowledge the support for this study by the Federal Highway Administration through a contract to MCEER （Contract Number： DTFH61-98- C-00094）. |
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| 摘 要： | In the seismic analysis and design of structures, the true velocity and absolute acceleration are usually approximated by their corresponding pseudo-values. This approach is simple and works well for structures with small damping (say, less than 15%). When the damping of a structure is enhanced for the purpose of response reduction, it may result in large analysis and design errors. Based on theory of random vibration and the established mechanism of seismic response spectra analysis, a method is developed (1) to predict the relative velocity spectra with any damping ratio level directly from the 5% standard pseudo-acceleration spectrum; and (2) to estimate the peak absolute acceleration. The accuracy of both is validated by using two selected ensembles of ground motion records.
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| 关 键 词： | 线性SDOF系统 峰值相对速度 峰值绝对加速度 估计 阻尼装置 |
| 文章编号： | 1671-3664（2007）01-0001-10 |
| 收稿时间： | 2006-12-29 |
| 修稿时间： | 2007-07-20 |
Estimation of peak relative velocity and peak absolute acceleration of linear SDOF systems |
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| Jianwei Song Yi-Lun Chu Zach Liang George C. Lee.Estimation of peak relative velocity and peak absolute acceleration of linear SDOF systems[J].Earthquake Engineering and Engineering Vibration,2007,6(1):1-10. |
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| Authors: | Jianwei Song Yi-Lun Chu Zach Liang George C Lee |
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| Institution: | Department of Civil, Structural and Environmental Engineering, University at Buffalo, State University of New York, USA |
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| Abstract: | In the seismic analysis and design of structures, the true velocity and absolute acceleration are usually approximated by their corresponding pseudo-values. This approach is simple and works well for structures with small damping (say, less than 15%). When the damping of a structure is enhanced for the purpose of response reduction, it may result in large analysis and design errors. Based on theory of random vibration and the established mechanism of seismic response spectra analysis, a method is developed (1) to predict the relative velocity spectra with any damping ratio level directly from the 5% standard pseudo-acceleration spectrum; and (2) to estimate the peak absolute acceleration. The accuracy of both is validated by using two selected ensembles of ground motion records. |
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| Keywords: | damping device velocity spectrum absolute acceleration spectrum response spectrum analysis |
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