American Society of Civil Engineers

Correction for Geometry Changes during Motion of Sliding-Block Seismic Displacement

by Constantine A. Stamatopoulos, (corresponding author), A.M.ASCE, (Instructor, Hellenic Open Univ., and Director, Stamatopoulos and Associates Co., 5 Isavron St, Athens, 114 71, Greece. E-mail:, Constantine Mavromihalis, (Student, Hellenic Open Univ., 29 28th October St, Thessaloniki, 57500, Greece.), and Sarada Sarma, M.ASCE, (Emeritus Reader and Senior Research Fellow, Civil and Environmental Engineering Dept., Imperial College, London SW7 2AZ, U.K.)

Journal of Geotechnical and Geoenvironmental Engineering, Vol. 137, No. 10, October 2011, pp. 926-938, (doi:

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Document type: Journal Paper
Abstract: The sliding-block model is often used for the prediction of permanent coseismic displacements of natural slopes and earth structures. This model assumes motion in an inclined plane but does not consider the decrease in inclination of the sliding soil mass as a result of its downward motion, which is the usual condition in the field. The paper studies the above effect and proposes an empirical equation correcting the predictions of the sliding-block model. The investigation is performed by using a recently developed multiblock model. The equation correcting the predictions of the sliding-block model depends on the slip length, the difference in inclinations of the upper and lower part of the slip surface, the seismic displacement predicted by the sliding-block model and the maximum value of the applied horizontal acceleration.

ASCE Subject Headings:
Seismic effects

Author Keywords:
Seismic ground displacement
Slip surface