Reliability of ULSD Theory in Geotechnics

0541290 - ÚTAM 2024 TH eng J - Článek v odborném periodiku
Koudelka, Petr
Reliability of ULSD Theory in Geotechnics.
Geotechnical Engineering. Roč. 51, č. 4 (2020), s. 25-37. ISSN 0046-5828
Institucionální podpora: RVO:68378297
Klíčová slova: design theory reliability * design value definition * soil property database * European standard EN 1997-1 * slope design
Obor OECD: Environmental and geological engineering, geotechnics
Způsob publikování: Omezený přístup
http://seags.ait.asia/journals/2020/reliability-of-ulsd-theory-in-geotechnics/

The article discusses the theory of ultimate limit state design (ULSD) and its consequences. An influence of definitions both characteristic and design values of soil parameters of EN 1997-1 (Code) is analyzed. The article has two basic theoretical aims: a) To demonstrate the incorrectness of ULSD in geotechnics and due to it in-effectivity and risk. b) To present a concept of a more plausible and correct design theory which is simpler and in compliance with mathematical principles. A case of slope design is chosen from basic geotechnical problems because slope masses are most sensitive. Slope designs based on the design approaches of the Code are compared with a direct design value definition-based approach. Slope analysis exploits the results of a statistical analysis of an extensive database of soil material properties. The analysis is based on data sets of sandy and fine-grained soils and demonstrates the risk of homogeneity for ULS designs. Another simple geotechnical design concept suitable also for advanced numerical methods is suggested and a procedure example is presented.
Trvalý link: https://hdl.handle.net/11104/0342351