Wolmar Fellenius
Wolmar Knut Axel Fellenius (born September 10, 1876 in Stockholm , † 1957 ) was a Swedish geotechnician.
Life
Fellenius was initially a railway engineer and from 1905 to 1911 headed the structural design department of the Swedish railways in Gothenburg, where he was also chief engineer at the port. From 1911 to 1943 he was professor of hydraulic engineering at the Royal Technical University in Stockholm . From 1919 he was chairman of the Swedish Geotechnical Commission.
It is Fellenius' merit to have devised the stability calculation of embankments using the slip circle method , which he published in a book in 1926 (1927 as earth static calculations in German translation) and which is still a standard method today. The method is also called the Fellenius method, the Swedish method or the Swedish slip circle method. In Sweden it was introduced by Knut Petterson and Sven Hultin during the investigation of embankment slides in clay on quay walls in the port of Gothenburg in 1916 and adopted in a commission of international experts on these slides in 1916, which also included Fellenius. Fellenius himself had been the port construction director in Gothenburg until 1911. Fellenius further developed the process, in particular as head of a commission to investigate landslides on the Swedish railways (final report 1922) and also took cohesion into account. It was later developed by Krey , Bishop and others.
There is also the Fellenius rule of 1927, according to which the safety of a slope is calculated as the ratio of the existing shear strength to the required shear strength.
Fellenius was the chairman of a Swedish commission set up in 1913 by the State Railway Administration to investigate embankment failures. The commission investigated 300 such cases of embankment breaks and landslides ; the final report was presented in 1922. This commission also introduced the term geotechnics (Swedish: "geoteknik") in 1916 .
Fellenius was an honorary citizen of the TH Karlsruhe . His son Bror and grandson Bengt were also active in the field of geotechnics.
Works
- Earth static calculations with friction and cohesion (adhesion) and assuming circular cylindrical sliding surfaces. Verlag Ernst & Sohn, Berlin 1927 (Swedish original 1926)
- Calculation of the Stability of Earth Dams. In: Second Congress on Large Dams. Washington, DC, 1936, Volume 4, pp. 445–462 ( books.google.de )
literature
- Wolmar Fellenius . In: Theodor Westrin, Ruben Gustafsson Berg, Eugen Fahlstedt (eds.): Nordisk familjebok konversationslexikon och realencyklopedi . 2nd Edition. tape 35 : Supplement: Cambrai – Glis . Nordisk familjeboks förlag, Stockholm 1923, Sp. 766 (Swedish, runeberg.org ).
Web links
- Swedish Geotechnical Society
- The Rise of Geotechnology Through 1936
- Presentation explaining the Fellenius method (PDF; 1.11 MB)
- Geoteknik , No. 11, October 2004 (PDF)
- TUM: Embankments and terrain jumps (PDF; 1.34 MB)
Individual evidence
- ^ Year of birth and year of death according to Skempton as well as short biography A history of soil properties 1717-1927 , Proc. 11. ICSMFE, 1985, reprinted in its Selected Works. Sometimes the life span 1867 to 1953 is incorrectly stated.
- ^ Karl-Eugen Kurrer : The History of the Theory of Structures. Searching for Equilibrium . Berlin: Ernst & Sohn 2018, p. 341ff., ISBN 978-3-433-03229-9 .
- ↑ digbib.ubka.uni-karlsruhe.de (PDF)
| personal data | |
|---|---|
| SURNAME | Fellenius, Wolmar |
| ALTERNATIVE NAMES | Fellenius, Wolmar Knut Axel (full name) |
| BRIEF DESCRIPTION | Swedish geotechnician |
| DATE OF BIRTH | September 10, 1876 |
| PLACE OF BIRTH | Stockholm |
| DATE OF DEATH | 1957 |