Hans Lorenz (civil engineer)

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Hans Lorenz (actually Johannes) (born October 25, 1905 in Graz ; † February 20, 1996 ) was a German professor of foundation engineering and soil mechanics at the Technical University of Berlin .

Life

Lorenz studied at the TH Graz , the Technical University of Munich and the Technical University of Berlin, where he received his doctorate in 1934 (graphic evaluation of resonance curves) and was then an assistant. From 1947 he was a full professor and professor of Soil Mechanics and Geotechnical at TU Berlin. In 1972 he retired. He was temporarily rector of the TU Berlin and dean of the Faculty of Civil Engineering.

He is also known internationally as one of the founders of soil dynamics, which he already dealt with in the 1930s at Degebo in Berlin , partly in connection with researching the soil compaction processes required for the large-scale buildings planned there and in connection with the construction of the Reichsautobahn. However, Degebo's original interest in this came from its co-founder August Hertwig , who came from dynamic investigations in bridge building to soil dynamics.

He also dealt with bentonite suspensions as a support fluid in foundation engineering, for example ideas for diaphragm wall technology with bentonite and for tunnel shielding with bentonite suspension support (hydro shield) can be found in his patents . He also developed methods for the frictionless lowering of caissons .

As deputy head of the German Soil Committee from 1948, he played a key role in the publication of the geotechnical DIN standards after the war. When it was founded in 1951, he was also deputy chairman of the German Society for Earthworks and Foundations (DGEG) (chairman was Erich Lohmeyer , other members of the board included Arnold Agatz , Peter Siedek ).

His doctoral students include Stavros Savidis (one of his successors at the TU Berlin), Gerd Gudehus and Bernhard Walz .

Honors

In 2005, in honor of Lorenz on his 100th birthday, the annual Hans Lorenz Symposium for subsoil dynamics and special foundation engineering was launched at the Grundbauinstitut of the TU Berlin .

Fonts

  • Hans Lorenz, A. Hertwig, G. Früh: The determination of the most important properties of the soil for the building industry through forced vibrations. Springer, Berlin 1933.
  • Hans Lorenz, Philipp Ebert : Permissible load on the subsoil: DIN 1054. Foundations. Guidelines. Ernst, Berlin 1956.
  • Hans Lorenz: Research results in the field of soil mechanics as a trailblazer for new foundation methods . West German Publishing House, Cologne 1958.
  • Hans Lorenz: Foundation dynamics . Springer, Berlin 1960.

literature

  • Stavros Savidis (Ed.): From the theory and practice of foundation engineering and soil mechanics. Festschrift for the 70th birthday of Hans Lorenz. Berlin 1975. ISBN 3-7983-0544-7

Web links

Individual evidence

  1. ↑ a b Preface to the lectures of the 4th Hans Lorenz Symposium
  2. ↑ A review article by Lorenz from this period is New Results of Dynamic Ground Research, Z. VDI, Volume 78, 1934, pp. 379–385
  3. ^ Savidi's research and practice in the tradition of Hans Lorenz
  4. ^ History of the DGGT
  5. ↑ Bernhard Walz 65 years . In: Bautechnik 81 (2004) issue 9, p. 767.
personal data
SURNAME Lorenz, Hans
ALTERNATIVE NAMES Lorenz, Johannes (real name)
BRIEF DESCRIPTION German engineer for foundation engineering and soil mechanics and university lecturer
DATE OF BIRTH October 25, 1905
PLACE OF BIRTH Graz
DATE OF DEATH February 20, 1996