符合設計譜人工地震之相位角對樓板反應譜之影響

• Main Authors: Chun-Ming Wang, 王俊銘
• Other Authors: 陳慧慈
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/57627505140348047169

碩士 === 國立中央大學 === 土木工程研究所 === 88 === In this study the spectrum-compatible artificial earthquakes are generated by treating the envelope function of earthquakes as the probability density function of phase differences. By varying the values of the parameter describing the envelope function and seed number for generating random number representing phase differences, a number of different spectrum-compatible earthquakes with different phase characteristics can be obtained. A five-story shear type building is then adopted to investigate the phase characteristics on the floor response spectra, and the parameters considered are the seed number and the number of discrete interval, rise time and decay time of envelope function. It is found that the phase characteristics has significant effect on the floor response spectra and the FFT content of the earthquake itself. Therefore, using only one spectrum-compatible artificial earthquake as the input for seismic resistant analysis may not be adequate.