Ulrich Krüger (engineer)

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Ulrich Krüger (born February 24, 1935 in Berlin ; † June 29, 2017 in Ludwigsburg ) was a German civil engineer and university professor .

Live and act

Even as a child, Krüger was interested in the railroad and the engineering structures associated with it such as bridges and tunnels, which was to introduce him to the profession of civil engineer. After completing secondary school , he learned the mason trade from 1951 to 1953 in Ludwigsburg , graduated from the Technical College in Stuttgart in 1955 and studied civil engineering at the TH Stuttgart until 1960 .

After his diploma thesis on the calculation of a hyperbolic paraboloid shell according to the membrane theory , he became a research assistant for Friedrich Wilhelm Bornscheuer in a DFG priority program (1960–1962). In January 1963, Krüger was temporarily appointed as a scientific assistant at the chair for structural engineering and elasticity theory at the TH Stuttgart , which was headed by Bornscheuer . There he dealt with the programming of structural problems on the then completely new digital computers and stopped in 1965 on the III. International Colloquium for Mathematics in Weimar gave a lecture on the effect of concentrated loads on circular cylinder shells. A year later, the TH Stuttgart awarded him a doctorate with the overall rating “very good” for his dissertation Contribution to the bending theory of the conical shell with linearly variable wall thickness .

In 1967, Krüger joined the technical office for bridge construction at Rheinstahl AG in Dortmund as a structural engineer and designer , was appointed chief engineer in 1969, and in 1970 was promoted to head of the bridge construction department within the main bridge construction division. During his time in bridge construction at Rheinstahl AG, he was involved in numerous projects. Only the Rudolf von Habsburg Bridge in Germersheim and the management of the “Stahlbau” technical office of the “Stahlbau” sub-consortium for the Köhlbrand Bridge , a sophisticated structure that has become a technical landmark of the Hanseatic City of Hamburg , should be emphasized.

From 1971 to 1976, Krüger ran the medium-sized Stuttgart construction company Hesselschwerdt & Schmitt GmbH. There he was also responsible for the technical office and the precast plant. Structural and civil engineering projects were carried out in the Stuttgart region under the aegis of Kruger , such as the construction of the subway within the framework of the working groups at the station forecourt and palace square in Stuttgart. Following his industrial activities, Krüger worked as a steel construction professor at the Karlsruhe University of Applied Sciences until 1999 and practiced as a test engineer for structural engineering (specializing in metal construction ) in Bietigheim-Bissingen from 1978 to 2003 . From his extensive engineering work is about supporting the publication Oliver Künzlers nomograms for the detection of lateral torsional buckling called, which helped to facilitate the engineering sense. Ulrich Krüger laid down the sum of his experience at the university and in engineering practice in his books on steel construction, which were used in the engineering offices as reference works and initiators and which were later integrated into a more comprehensive series of books by Rolf Kindmann. Krüger endeavored to present complex problems of structural planning in steel construction, such as plate buckling , in the context of conceptual specialist books for practical use.

swell

Karl-Eugen Kurrer : Ulrich Krüger †. In: Stahlbau, Volume 86 (2017), H. 12, P. 1121

Individual evidence

  1. ↑ Gutfleisch, W., Krüger, U .: The steel superstructure of the Rhine bridge Germersheim . Der Stahlbau 41 (1972), no. 2, pp. 33-40.
  2. ↑ Künzler, O .: Nomograms for the verification of torsional buckling resistance according to DIN 18800, Part 2 . Steel construction special. Berlin: Ernst & Son 1999.
  3. ^ Krüger, U .: Steel construction, part 1. Basics . 1st edition Berlin: Ernst & Sohn 1998.
  4. ^ Krüger, U .: Steel construction, part 2. Stability theory, structural steel construction and industrial construction . 1st edition Berlin: Ernst & Sohn 1998.
  5. ^ Krüger, U .: plate bumps. In: Festschrift for the 20th anniversary of Friedrich + Lochner GmbH, pp. 24–38. Stuttgart: Friedrich + Lochner GmbH 1998.
personal data
SURNAME Kruger, Ulrich
BRIEF DESCRIPTION German engineer
DATE OF BIRTH February 24, 1935
PLACE OF BIRTH Berlin
DATE OF DEATH June 29, 2017
Place of death Ludwigsburg