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Hayashi, Hiroshi 2014-12-15T20:36:26Z 2014-12-15T20:36:26Z 10000-01-01 1987 1987 A method is developed for evaluating the static stability of a cut slope formed by strain-softening soil such as highly overconsolidated clay considering progressive failure as the critical failure mode. The stress condition along a potential failure surface both prior to and after an excavation is investigated by finite-element elasto-plastic analysis; in this process, a potential failure surface is modeled as joint elements. Through the investigation, the redistribution of an unbalanced force caused by a local failure is determined. This stress redistribution is combined with the inherent variability of the shear strength of a soil, which is the main contributor to the uncertainties in the static stability evaluation of a cut slope, to determine the failure probability and the expected length of local failure along an assumed potential failure surface. A method is developed for evaluating the seismic stability of a cut slope consisting of the following: (1) the horizontal vibration of a sliding mass subjected to an earthquake loading is converted into an equivalent SDF system with a smooth hysteretic restoring force; (2) a failure criterion and a damage index for the converted SDF system is established; and (3) the safety based on the response statistics obtained through random vibration analysis is evaluated. The reliability against sliding failure conditional on the intensity and duration of a loading was obtained using the results from the random vibration analysis; the uncertainties associated with several parameters including the dynamic soil properties and the randomness in the frequency content of an earthquake loading are considered. Made available in DSpace on 2014-12-15T20:36:26Z (GMT). No. of bitstreams: 1 8721653.pdf: 3741038 bytes, checksum: 09d49eb3d10823de5f4c7ee2de1921cd (MD5) Previous issue date: 1987 Embargo set by: Seth Robbins for item 70130 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 139 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987. http://hdl.handle.net/2142/69964 (UMI)AAI8721653 Engineering, Civil Static and Seismic Stability of Cut Slopes in Terms of Reliability text Civil Engineering Civil Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.