Influence of Ground Motion Duration on Damping Reduction Factor |
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| Authors: | Jing Zhou Kai Tang Huiying Wang Xiandan Fang |
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| Affiliation: | 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;2. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China;3. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China |
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| Abstract: | This article investigates the influences of the effective ground motion duration (GMD) on damping reduction factor. The GMD are associated with 25 Chi-chi earthquake ground motion records and harmonic sine wave. The study shows that damping reduction factor decreases with the increasing of the damping ratio, and decreases with the increasing of the effective duration of the ground motion and the number of cycles of harmonic excitation. A nonlinear multiple regression analysis based on the statistical mean values of the present study is employed, and a modified damping reduction factor considering the effects of GMD is suggested. |
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| Keywords: | Seismic Design Ground Motion Duration Damping Reduction Factors Displacement Response Spectra Effective Duration |
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