TY - GEN
T1 - Landslide Occurrences in China during Wenchuan Earthquake
AU - Fernández, F.
AU - Vargas, E.
AU - Muller, A.
AU - Velloso, R. Q.
AU - Sousa, R. L.
AU - Ribeiro e Sousa, L.
AU - Sousa Oliveira, C.
N1 - Publisher Copyright:
© 2021 ARMA, American Rock Mechanics Association.
PY - 2021
Y1 - 2021
N2 - Landslide disasters, one of the most destructive geo-hazards, often have serious consequences that range from economic losses to fatalities. Earthquakes, particularly those with strong ground motion, can trigger thousands of landslides in mountainous regions. The 2008 Wenchuan earthquake which occurred in China is such an example. The massive Daguangbao landslide is the largest landslide that occurred in this earthquake and it is modeled in this paper suing a 3D using the Material Point Method (MPM). Focus is on the failure mechanism and the run-out process of the failed mass due the earthquake interaction on the slope. The 3D model was developed considering the spatial variation of the materials into the domain. The constitutive modeling of the materials includes elastoplastic constitutive models with linear-softening and rock tensile strength cutoff. The numerical results in 3D are compared with previous results in 2D and with the reported topography of the characteristic section of the slope. The numerical results allowed estimating the onset and evolution of the failure surface and the formation of fragmented blocks. within the failing mass. This work also addresses a discussion about results and conclusion.
AB - Landslide disasters, one of the most destructive geo-hazards, often have serious consequences that range from economic losses to fatalities. Earthquakes, particularly those with strong ground motion, can trigger thousands of landslides in mountainous regions. The 2008 Wenchuan earthquake which occurred in China is such an example. The massive Daguangbao landslide is the largest landslide that occurred in this earthquake and it is modeled in this paper suing a 3D using the Material Point Method (MPM). Focus is on the failure mechanism and the run-out process of the failed mass due the earthquake interaction on the slope. The 3D model was developed considering the spatial variation of the materials into the domain. The constitutive modeling of the materials includes elastoplastic constitutive models with linear-softening and rock tensile strength cutoff. The numerical results in 3D are compared with previous results in 2D and with the reported topography of the characteristic section of the slope. The numerical results allowed estimating the onset and evolution of the failure surface and the formation of fragmented blocks. within the failing mass. This work also addresses a discussion about results and conclusion.
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M3 - Conference contribution
AN - SCOPUS:85123049175
T3 - 55th U.S. Rock Mechanics / Geomechanics Symposium 2021
SP - 568
EP - 676
BT - 55th U.S. Rock Mechanics / Geomechanics Symposium 2021
T2 - 55th U.S. Rock Mechanics / Geomechanics Symposium 2021
Y2 - 18 June 2021 through 25 June 2021
ER -