Static and Seismic Stability of Cut Slopes in Terms of Reliability

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Hayashi, Hiroshi

• Engineering, Civil

Identifier

(UMI)AAI8721653

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/69964