Study on the Effect of Fault Fracture Zone with Various Depths and Rake Angles to the Spreading of Rayleigh Wave and Ground Motion

Liu Jingbo Wang Wenhui Liu Xiangqing

Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (4) : 111-115.

PDF(2714 KB)
PDF(2714 KB)
Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (4) : 111-115.
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Study on the Effect of Fault Fracture Zone with Various Depths and Rake Angles to the Spreading of Rayleigh Wave and Ground Motion

  • Liu Jingbo Wang Wenhui Liu Xiangqing
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Abstract

Dynamic analysis of ground motion with faults of various depths and rake angles under Rayleigh wave is carried out using the Rayleigh wave input method based on viscous-spring artificial boundary. The effect of faults with various depths and rake angles to the spreading of Rayleigh wave and ground motion is studied. The results show variations of depth and rake angle have little effect in the mediate and far field on the incident side. Peak displacement response of the fault corner and the ground nearby on the incident side enlarges greatly with the increase of the fault depth, but gradually tends to a constant. The positions have a larger displacement response when the rake angle is sharp. In the mediate and far field on the other side, peak horizontal and vertical absolute displacements decrease gradually with the increase of the fault depth and the study also indicates in the conditions of other fixed parameters, the variations of rake angle have little effect on the peak displacement response on this side. Finally the applicability of the conclusion above is analyzed by changing the ground conditions and the results show a good applicability.

Key words

fault fracture zone / Rayleigh wave / numerical simulation / ground motion / dynamic time history analysis / ratio of displacement amplitude spectrum

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Liu Jingbo Wang Wenhui Liu Xiangqing. Study on the Effect of Fault Fracture Zone with Various Depths and Rake Angles to the Spreading of Rayleigh Wave and Ground Motion[J]. Journal of Vibration and Shock, 2013, 32(4): 111-115
PDF(2714 KB)

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