International Journal of Civil Engineering

en Use of centrifuge experiments and discrete element analysis To model the reverse fault slip Seismic Geotechnique Seismic Geotechnique Research Paper Research Paper This study presents a series of physical model tests and numerical simulations using PFC2D (both with a dip slip angle=60° and a soil bed thickness of 0.2 m in model scale)at the acceleration conditions of 1g, 40g, and 80 g to model reverse faulting. The soil deposits in prototype scale have thicknesses of 0.2 m, 8 m, and 16 m, respectively. This study also investigates the evolution of a surface deformation profile and the propagation of subsurface rupture traces through overlying sand. This study proposes a methodology for calibrating the micromechanical material parameters used in the numerical simulation based on the measured surface settlements of the tested sand bed in the self-weight consolidation stage. The test results show that steeper surface slope on the surface deformation profile, a wider shear band on the major faulting-induced distortion zone, and more faulting appeared in the shallower depths in the 1-g reverse faulting model test than in the tests involving higher-g levels. The surface deformation profile measured from the higher-g physical modeling and that calculated from numerical modeling show good agreement. The width of the shear band obtained from the numerical simulation was slightly wider than that from the physical modeling at the same g-levels and the position of the shear band moved an offset of 15 mm in model scale to the footwall compared with the results of physical modeling. Reverse fault, Surface deformation profile, Subsurface rupture trace, Centrifuge modeling, Discrete element method 79 89 http://ijce.iust.ac.ir/browse.php?a_code=A-10-1949-1&slc_lang=en&sid=1 Y.Y. Chang 93332004@ncu.edu.tw 180031947532846009938 180031947532846009938 No Department of Civil Engineering. National Central University,Taiwan. C.J. Lee cjleeciv@ncu.edu.tw 180031947532846009939 180031947532846009939 Yes Department of Civil Engineering. National Central University,Taiwan. W.C. Huang wenchaoh@ncu.edi.tw 180031947532846009940 180031947532846009940 No Department of Civil Engineering. National Central University,Taiwan. W.J. Huang huang22@ncu.edu.tw 180031947532846009941 180031947532846009941 No Department of Applied Geology Engineering. National Central University, Taiwan M.L. Lin mlin@ntu.edu.tw 180031947532846009942 180031947532846009942 No Department of Civil Engineering. National Taiwan University,Taiwan. W.Y. Hung wyhung@ncree.narl.org.tw 180031947532846009943 180031947532846009943 No National Center for Research on Earthquake Engineering, Taiwan Y. H. Lin party@moeacgs.gov.tw 180031947532846009944 180031947532846009944 No Central Geological Survey, MOEA, Taiwan