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http://dx.doi.org/10.12989/gae.2012.4.1.039

Numerical validation of Multiplex Acceleration Model for earthquake induced landslides  

Zheng, Lu (Department of Civil and Structural Engineering, Kyushu University)
Chen, Guangqi (Department of Civil and Structural Engineering, Kyushu University)
Zen, Kouki (Department of Civil and Structural Engineering, Kyushu University)
Kasama, Kiyonobu (Department of Civil and Structural Engineering, Kyushu University)
Publication Information
Geomechanics and Engineering / v.4, no.1, 2012 , pp. 39-53 More about this Journal
Abstract
Due to strong ground motion of earthquake, the material in the landslide can travel a significant distance from the source. A new landslide model called Multiplex Acceleration Model (MAM) has been proposed to interpret the mechanism of long run-out movement of this type of landslide, considering earthquake behaviors on slope and landslide materials. In previous study, this model was verified by a shaking table test. However, there is a scale limitation of shaking table test to investigate MAM in detail. Thus, numerical simulation was carried out in this study to validate MAM under full scale. A huge rock ejected and A truck threw upwards by seismic force during Wenchuan Earthquake (Ms. 8.0) was discussed based on the simulation results. The results indicate that collisions in P-phase of earthquake and trampoline effect are important behaviors to interpret the mechanism of long run-out and high velocity. The results show that MAM is acceptable and applicable.
Keywords
long run-out landslides; earthquake; Multiplex Acceleration Model; trampoline effect; UDEC;
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