- Tytuł:
- Stress-weighted spatial averaging of random fields in geotechnical risk assessment
- Autorzy:
- Brząkała, Włodzimierz
- Powiązania:
- https://bibliotekanauki.pl/articles/2041287.pdf
- Data publikacji:
- 2021
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
spatial variability
effective soil parameter
variance reduction
Vanmarcke averaging
safety factor - Opis:
- Effects of spatial fluctuations of soil parameters are considered in a new context – considering variability of soil parameters in conjunction with non-uniform stress fields, which can locally amplify (or suppress) subsoil inhomogeneities. In this way, several design situations for the Coulomb frictional material with random tan(φ(x)) reveal a reduction of variance, which is less significant than for the standard volume averaging. When looking for an 'effective' random variable [tan(φ)]a – that is, a random variable, which is equivalent to the random field tan(φ(x)) – the Vanmarcke averaging by simple volume integrals is insufficient; it systematically overestimates effects of variance reduction, thus causing potentially unsafe situations. The new proposed approach is coherent, formally defined and more realistic.
- Źródło:
-
Studia Geotechnica et Mechanica; 2021, 43, 4; 465-478
0137-6365
2083-831X - Pojawia się w:
- Studia Geotechnica et Mechanica
- Dostawca treści:
- Biblioteka Nauki
Artykuł