Friedrich Bleich

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Friedrich Bleich (born February 2, 1878 in Vienna , † February 17, 1950 in New York City ) was an Austrian-American civil engineer.

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Bleich studied civil engineering at the Vienna University of Technology . After graduating in 1902, he worked for the bridge building company Prag-Bubno and Waagner-Biro in Vienna. In 1910 he founded his own engineering office and began intensive publication activities at the same time. From 1914 to 1916 he taught bridge building at the Technical University of Vienna and received his doctorate there in 1917 under Friedrich Hartmann and Anton Zschetzsche (1856–1922). After the annexation of Austria in 1938, he fled to the USA via Zurich in 1941. There he worked for the architecture and engineering office Albert Kahn in Detroit and then at the US Institute for Steelwork. From 1947 he was in the engineering office Frankland & Lienhard in New York City .

He investigated the collapse of the Tacoma Narrows Bridge in the United States . For the US Navy , he researched dents and other deformations in steel structures for ships.

He was a pioneer in the application of the finite difference method in statics (which he already applied in 1904 in beam theory), about which he wrote a book with Ernst Melan in 1927. He wrote books on the construction of steel bridges and his four-moment theorem method from his dissertation was popular with steel construction practitioners.

In 1910 he was one of the founders of the magazine Der Eisenbau . Since its inception in 1938, he has been secretary of the International Association for Bridge & Structural Engineering (IABSE).

His son Hans H. Bleich was also a civil engineer.

Fonts (selection)

  • The calculation of statically indeterminate structures using the four-moment theorem method . Springer, Berlin 1918.
  • Theory and calculation of the iron bridges . Springer, Berlin 1924.
  • - (Ed.), Hans Baudisch: Pocket book for engineers and architects . Springer, Vienna 1926.
  • -, Ernst Melan : The ordinary and partial difference equations in structural engineering . Springer, Berlin 1927.
  • Steel buildings, their theory, calculation and structural design . Two volumes. Springer, Berlin 1932/33.
  • Design of rigid frame knees . Committee on Steel Structure Research, American Institute of Steel Construction, New York 1943.
  • - et al .: The mathematical theory of vibration in suspension bridges. A contribution to the work of the Advisory Board on the Investigation of Suspension Bridges . Department of Commerce, Bureau of Public Roads, Washington DC 1950.
  • - (Ed.), Lyle B. Ramsey: Buckling strength of metal structures . McGraw-Hill, New York NY 1952.

literature

Web links

Individual evidence

  1. ↑ The four-moment theorem and its application to the calculation of statically indeterminate structures . Dissertation. Vienna University of Technology, Vienna 1917, OBV .
personal data
SURNAME Pale, Friedrich
BRIEF DESCRIPTION Austrian civil engineer
DATE OF BIRTH February 2, 1878
PLACE OF BIRTH Vienna
DATE OF DEATH 17th February 1950
Place of death New York City