Application Study on Synthesis Method of Earthquake Motion

作     者：Kahori Iiyama Fumio Sasaki Masahiko Nakamura Akira Tanabe Tetsuo Tamaoki Wataru Mizumachi Michio Yamada 

作者机构：Architectural Department Faculty of Engineering Tokyo University of Science Tokyo 102-0073 Japan General Production Center Tokyo Building Dept. Shimizu Corporation Tokyo 105-8007 Japan Social ＆ Environmental Division Atomic Energy Society of Japan Tokyo 105-0004 Japan Toshiba Nuclear Engineering Services Corporation Yokohama 235-8523 Japan Japan Nuclear Energy Safety Organization Tokyo 105-0001 Japan Research Institute for Mathematical Sciences Kyoto University Kyoto 606-8502 Japan 

出 版 物：《Journal of Mechanics Engineering and Automation》 (机械工程与自动化（英文版）)

年 卷 期：2011年第1卷第3期

页      码：181-190页

摘      要：For seismic design of structure and machinery, it is important to reproduce input earthquake motions that are likely to occur at a target site. Among the various methods used for generating artificial earthquake motions, the Synthesis Method of Trigonometric Function is used widely. In this method, artificial waves are reproduced by superimposing sine waves and then adding information about amplitude and phase in the frequency domain. In the Japanese architectural design code, the amplitude is standardized as the target response spectrum, and the phase can be defined by random numbers or by the phase of one observed wave. However, a random phase is distinctly different from the phase of an actual earthquake. Further, the phase of one observed wave is confined to the phase characteristic of the artificial wave of only one specific earthquake motion. In this paper, the authors introduce a new convenient method to reproduce artificial waves that not only satisfy the standardized spectrum property but also have the time-frequency characteristics of multiple observed waves. The authors show the feature of the artificial waves, discuss the merits of the method by comparing with existing methods, and report the tendencies of the non-liuear response by using simple model.

主 题 词：Artificial earthquake motion wavelet transform time-frequency characteristics non-stationarity. 

学科分类：081405[081405] 08[工学] 081402[081402] 081304[081304] 0813[工学-化工与制药类] 0814[工学-地质类] 

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