Details

Autor(en) / Beteiligte

• Juang, C. Hsein
• Zhang, Jie
• Shen, Mengfen
• Hu, Jinzheng

Titel

Probabilistic methods for unified treatment of geotechnical and geological uncertainties in a geotechnical analysis

Ist Teil von

• Engineering geology, 2019-01, Vol.249, p.148-161

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• There are typically three types of models involved in a geotechnical analysis, i.e., the geologic model, the ground model, and the geotechnical model, each of which may be associated with uncertainty to a different extent. However, in a typical geotechnical analysis the geological uncertainty is seldom characterized and considered explicitly. In this paper, we discuss the probabilistic tools developed in the geotechnical profession for tasks such as uncertainty characterization, assessment of impact of uncertainties, uncertainty reduction, and evaluation of the value of uncertainty reduction. We postulate that the same tools may be used for a unified treatment of various types of uncertainties in a geotechnical analysis, which would necessitate the collaboration of the engineering geologists and the geotechnical engineers to comprehensively characterize these uncertainties consistently. To this end, the probabilistic tools or methods that are widely used in geotechnical engineering are examined to determine their applicability in the evaluation of geological uncertainties. Examples are provided to illustrate various concepts introduced in this paper. •The uncertainties associated with geologic, ground and geotechnical models are discussed•Probabilistic methods can be used to characterize these uncertainties•Reliability methods can be used to consider the effect of these uncertainties•The Bayesian method can be used for uncertainty reduction•The value of uncertainty reduction can be assessed through decision analysis