Tehnički glasnik, Vol. 16 No. 1, 2022.
Izvorni znanstveni članak
https://doi.org/10.31803/tg-20201113132539
Calibration of Undrained Shear Strength Partial Factor Using Probability Theory
Filip Dodigović
; Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varazdin, Croatia
Krešo Ivandić
; Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varazdin, Croatia
Božo Soldo
; University North, Department of Civil Engineering, Jurja Križanića 31b, 42000 Varaždin, Croatia
Kristijan Grabar
orcid.org/0000-0002-2209-4509
; SPP d.o.o., Davora Trstenjaka 3, 42000 Varaždin, Croatia
Sažetak
Design in accordance with Eurocode 7 applies the partial factors of geotechnical parameters to take into account uncertainties of various sources. The prescribed values of partial factors are unique, even though the degree of uncertainty can vary significantly. This can lead to an unequal reliability level of structures designed using the same procedures and methods. This paper analyses the influence of undrained shear strength variability on the reliability index (β), using reliability theory and statistical methods. Analyses were performed in the case of a shallow footing designed in accordance with Eurocode 7, design approach 3. It is shown that reliability indexes of a shallow footing could be lower than the target values prescribed in Eurocode. To meet these values, additional elaboration and calibration of undrained shear strength partial factor (γcu) was proposed.
Ključne riječi
Eurocode 7; geotechnical design; partial factor; reliability analysis; uncertainty; undrained shear strength
Hrčak ID:
271921
URI
Datum izdavanja:
4.2.2022.
Posjeta: 679 *