Emil Winkler

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Emil Ernst Oskar Winkler (born April 18, 1835 in Falkenberg / Elster , † August 27, 1888 in Berlin ) was a German civil engineer and university professor .

Life

Winkler was born in Falkenberg as the son of the forester Johann Leberecht Winkler and his wife Juliane Wilhelmine Winkler, b. Beckmann. His father committed son at 12 years suicide . Attending primary school in Falkenberg (from 1841) was followed by attending grammar school in Torgau from 1847, which he broke off in 1850. He now completed an apprenticeship as a bricklayer in Torgau and then attended the Holzminden building trade school .

Emil Winkler then studied at the Dresden Polytechnic from 1854 to 1858 . The civil engineer Johann Andreas Schubert and the mathematician Oskar Schlömilch were his teachers there. He then worked as an assistant engineer in the Saxon waterway administration. From 1860 he did his doctorate at the University of Leipzig under the physicist Wilhelm Gottlieb Hankel on a topic from soil mechanics ( about the pressure inside earth masses ). He also gave courses at the Dresden Polytechnic, where he was Schubert's research assistant from 1861 to 1865 . In 1865 he became professor at the later German Technical University in Prague and in 1868 professor for railway construction and bridge construction at the Vienna Polytechnic (from 1872 kk Technical University Vienna ). He was there from October 15, 1868 to September 22, 1877. In 1877 he moved to the Berlin Academy of Architecture as a professor of structural engineering and bridge construction. From May 1881 to 1882 he was the second rector of the Technische Hochschule (Berlin-) Charlottenburg .

During his scientific work, Emil Winkler dealt with bridge construction, tunnel construction, earthworks, elasticity and strength of structural engineering . He experimentally investigated the problems of calculating two- and three-dimensional loads on components. In civil engineering, Winkler's name is still associated with the " Winkler bedding ", a model for determining the load on the substructure of the railway tracks. Winkler dealt with the problem of reducing the high computational effort involved in the construction of trusses through what was later known as a "method of influence lines ( influence lines )". He also made advances in the theory of elastic masonry arches (theory of the support line).

Emil Winkler died on August 27, 1888 as a result of a stroke on the construction site of his house in Berlin-Friedenau . He was married to Clara Helene geb. Crentz, the daughter of a Dresden businessman.

The University of Bologna awarded him an honorary doctorate .

Fonts

  • Change in shape and strength of curved bodies, especially rings. In: Civilingenieur , 4th year 1858, pp. 232–246.
  • Strength of the tubes, steam boiler and flywheels. In: Civilingenieur , 6th year 1860, pp. 325–362, pp. 427–462.
  • Contributions to the theory of continuous bridge girders. n: Civil Engineer , 8th year 1862, pp. 136–182.
  • The doctrine of elasticity and strength with special regard to its application in technology. H. Dominicus, Prague 1867. ( online )
  • Lectures on railway construction given at the Royal Bohemian State Polytechnic Institute in Prague. H. Dominicus, Prague 1867.
  • Lecture on the calculation of arch bridges. In: Communications from the Association of Architects and Engineers in Böhmen , 3rd year 1868, pp. 6–12 / 4th year 1869, pp. 1–7.
  • Outline of the history of elasticity theory. In: Technische Blätter , 3rd year 1871, No. 1, No. 3.
  • Continuous carrier theory. In: Österreichische Ingenieur- und Architekten-Zeitschrift , Volume 24, 1872, pp. 27–32, pp. 61–65.
  • The lattice girders and bearings of straight girders of iron bridges. Carl Gerold's son, Vienna 1872.
  • New theory of earth pressure together with a history of the theory of earth pressure and the experiments made about it. Waldheim, Vienna 1872.
  • Technical guide through Vienna. Lehmann & Wentzel, Vienna 1873.
  • The position of the support line in the vault. In: Deutsche Bauzeitung , Volume 13, 1879, pp. 117–119, 127–130 / Volume 14, 1880, pp. 58–60.
  • The secondary stresses in iron structures. In: Deutsche Bauzeitung , Volume 14, 1881, pp. 110–111, pp. 129–130, pp. 135–136.
  • Bridge theory. Articulated Beam Theory. 2nd edition, Carl Gerold's Sohn, Vienna 1881.
  • Lectures on the statics of building structures. Part 1: Strength of straight bars. Berlin 1883. ( online )

literature

Web links

Individual evidence

  1. ↑ Centralblatt der Bauverwaltung , 1st year 1881, No. # (from May 14, 1881), p. 64. ( digitized version )
  2. ^ Rector's speeches in the 19th and 20th centuries - online bibliography, Technische Universität Berlin, Rectorates
personal data
SURNAME Winkler, Emil
ALTERNATIVE NAMES Winkler, Emil Ernst Oskar (full name)
BRIEF DESCRIPTION German civil engineer and university professor
DATE OF BIRTH April 18, 1835
PLACE OF BIRTH Falkenberg / Elster
DATE OF DEATH August 27, 1888
Place of death Berlin