000011113 001__ 11113
000011113 005__ 20141205155837.0
000011113 04107 $$aeng
000011113 046__ $$k2008-10-12
000011113 100__ $$aNakamura, Masahiko
000011113 24500 $$aGeneration of Artificial Earthquake Motion Using Observed Earthquake Motions

000011113 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011113 260__ $$b
000011113 506__ $$arestricted
000011113 520__ $$2eng$$aIn probabilistic seismic hazard analysis, severer earthquake motions than those used in usual design is very important to estimate a damage frequency of structures and components. An artificial earthquake motion of such a severer earthquake is required to have nonlinear response spectral properties similar to those of real motions. In this paper we propose a new convenient non-parametric method to generate an artificial earthquake motion which conforms to a target response spectrum. In this method, the artificial earthquake motion is generated in the form of the orthonormal wavelet transform, in which the wavelet coefficients of the artificial earthquake motion are given by weighted sums of wavelet coefficients of observed earthquake motions in each frequency band. The weights for observed earthquake motions are adjusted to reduce the difference between the response spectrum of the artificial earthquake motion and the target response spectrum, to a tolerance level. We apply this method to generate an artificial earthquake motion subject to the Ohsaki spectrum, from randomly selected several observed earthquake motions in a given band of magnitude and epicentral distance. Each of these several observed earthquake motions is found to contribute appreciably to the generated motion in all frequency bands. The average and standard deviation of group delay time of the generated motions are, respectively, nearly at the central values of those for these observed earthquake motions. These results show that the artificial earthquake motions have average time-frequency characteristics of those for the observed earthquake motions.

000011113 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011113 653__ $$aArtificial Earthquake Motion, Wavelet Transform, Group Delay Time, Time-Frequency Characteristics, Response Spectrum, Observed Earthquake Motion

000011113 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011113 720__ $$aNakamura, Masahiko$$iSasaki, Fumio$$iYokoyama, Kazuki$$iTamaoki, Tetsuo$$iTanabe, Akira$$iMizumachi, Wataru$$iYamada, Michio
000011113 8560_ $$ffischerc@itam.cas.cz
000011113 8564_ $$s688524$$uhttps://invenio.itam.cas.cz/record/11113/files/03-02-0011.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-02-0011.
000011113 962__ $$r9324
000011113 980__ $$aPAPER