Author(s): | Karcher, Christian; Imposimato, Silvia; Herle, Ivo |
Title: | |
Abstract: | Üblicherweise werden in der Praxis hydraulische Sicherheiten für vordefinierte Versagensmechanismen und ohne Berücksichtigung einer bodenmechanischen Vorgeschichte berechnet. Die mathematische Analyse der durch Strömung reduzierten effektiven Spannungen, verbunden mit lokalen hydraulischen Sicherheiten, lässt Schlussfolgerungen auf den Gesamt- und örtlichen Zustand im Untersuchungsgebiet vergleichsweise einfach zu. Dazu werden unter Zuhilfenahme der Finite-Elemente-(FE)Methode Porenwasserdruckverteilungen und Effektivspannungen bewertet. Bei FE-Programmen, die Berechnungen mit Porenwasserdrücken anbieten, genügen für diese Analyse Anpassungen im Post-Processing. Effects of groundwater flow on local hydraulic safety - examples with FEM In practice, hydraulic safety is usually calculated for predefined failure mechanisms and without consideration of a soil history. The mathematical analysis of changes in effective stresses induced by groundwater flow can be related to local hydraulic safety in the considered area. For this purpose, pore water pressure distributions and effective stresses are evaluated with the FE method. In FE software, which enables calculations with pore water pressures, adjustments in post-processing are sufficient to determine local hydraulic safety level. |
Source: | geotechnik 43 (2020), No. 2 |
Page/s: | 77-83 |
Language of Publication: | German |
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