Max Ritter (civil engineer)

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Max Ritter (born August 4, 1884 in Biel , † February 25, 1946 in Küsnacht ) was a Swiss civil engineer at the Swiss Federal Institute of Technology in Zurich .

Life

Max Ritter obtained a degree in civil engineering from the Swiss Federal Polytechnic in 1907 . In 1909 he received his doctorate at the Technical University of Dresden . Ritter published on the theory of statically indeterminate frames and arches: at that time the calculation of such static systems was on the agenda for the construction of reinforced concrete bridges and stimulated the building of structural theory in this area. Ritter also contributed to the earth pressure theory . In 1910 he elegantly derived Fritz Kötter's differential equation and later developed his theory of earth pressure further. From 1910 he worked for the construction company E. Züblin & Cie , and since 1913 as technical director in Zurich . Among other things, he planned the construction of the Pérolles Bridge and the Zähringer Bridge in Freiburg and, from 1924 to 1926, the Hundwilertobel Bridge. In addition, he worked from 1910 to 1927 as a private lecturer for technical statics and reinforced concrete construction at the ETH. In 1927, in addition to Leopold Karner , Ritter was appointed to succeed Arthur Rohn as professor of structural engineering, structural engineering and bridge construction in stone, concrete and reinforced concrete. During this time, after the work of George Earl Begg, Ritter dealt with experimental methods of structural engineering and the continuation of the theory of reinforced concrete on the basis of tests.

In addition to the initiator Heinrich Eduard Gruner, he was a member of the Swiss Dam Commission, the predecessor of the Swiss National Committee for Large Dams (SNGT). Other members were: Hans Eggenberger (1875–1958), Eugen Meyer-Peter (1883–1969), Alfred Stucky (1892–1969), Alfred Zwygart (1886–1972). Henri Gicot held the founding meeting of the SNGT on December 20, 1948 .

Pierre Lardy (1903-1958) was his assistant from 1942 and his successor as full professor.

Works

  • Simplification of the calculation of hingeless bridge arches . In: Schweizerische Bauzeitung , vol. 51, 1908, no. 22, pp. 286–287, no. 24, pp. 310–313 u. No. 26, pp. 331-336.
  • Calculating elastically restrained and continuous beams with a variable moment of inertia . In: Schweizerische Bauzeitung, Vol. 53, 1909, No. 18, pp. 231–234 u. No. 19, pp. 244-245.
  • Contributions to the theory and calculation of the full-walled arch girders without vertex joints, in particular the bridge vaults and the rigid frame common in reinforced concrete construction . Berlin: Ernst & Son 1909.
  • On the theory of earth pressure on retaining walls . In: Schweizerische Bauzeitung, vol. 55, 1910, no. 15, pp. 197–199.
  • The continuous beam on elastically rotatable supports . In: Schweizerische Bauzeitung, Vol. 57, 1911, No. 4, pp. 47–52.
  • The chemins de fer d'aujourd'hui et plus specialty the chemins de fer allemands . Paris / Berlin: Hobbing 1912.
  • Experimental methods of structural engineering . In: Schweizerische Bauzeitung, Vol. 96, 1930, No. 18, pp. 226–229.
  • Tables for the calculation of reinforced concrete structures according to Swiss standards , 1935, Zurich: Leemann 1935.
  • Limit states of equilibrium in earth and bulk mass . In: Congress reports of the International Association for Bridge Construction and Building Construction (IVBH). Second volume, pp. 1575-1585. Zurich: IVBH 1936.
  • with Pierre Lardy : Prestressed concrete: theory and calculation; Swiss experiments and explanations , 2nd edition, Zurich: Leemann 1950.

Web links

proof

  1. ↑ a b Karl-Eugen Kurrer : The History of the Theory of Structures. Searching for Equilibrium . Ernst & Sohn , Berlin 2018, ISBN 978-3-433-03229-9 , p. 331
personal data
SURNAME Knight, Max
BRIEF DESCRIPTION Swiss civil engineer
DATE OF BIRTH 4th August 1884
PLACE OF BIRTH Biel / Bienne
DATE OF DEATH February 25, 1946
Place of death Küsnacht ZH