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SLIDING SYSTEM PREDICTING LARGE PERMANENT CO‐SEISMIC MOVEMENTS OF SLOPES
Author(s) -
STAMATOPOULOS C. A.
Publication year - 1996
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/(sici)1096-9845(199610)25:10<1075::aid-eqe602>3.0.co;2-e
Subject(s) - geology , displacement (psychology) , motion (physics) , block (permutation group theory) , plane (geometry) , block model , field (mathematics) , ground motion , geodesy , geotechnical engineering , seismology , geometry , mathematics , physics , classical mechanics , psychology , mining engineering , pure mathematics , psychotherapist
The sliding‐block model is used widely for the prediction of permanent co‐seismic displacements of 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 state in the field. For the investigation of the above effect, this paper considers the dynamic motion of a variant sliding system; a perfectly flexible chain sliding along planes with gradually gentler inclinations. The governing equation of motion of the new model is approximately derived and solved for a number of earthquakes. The cases of ground slips where the permanent displacement of the new model differs considerably from that of the sliding‐block model are detected and an improved method predicting permanent seismic deformations is proposed.