| Franz Dischinger |
Franz Dischinger (8 October 1887 - 9 January 1953) was a pioneering German civil and structural engineer, responsible for the development of the modern cable-stayed bridge. He was also a pioneer of the use of prestressed concrete, patenting the technique of external prestressing (where the prestressing bars or tendons are not encased in the concrete) in 1934.[1]
After completing Gymnasium in Karlsruhe, Germany, Dischinger went to the Technische Hoschschule Karlsruhe (now Karlsruhe Institute of Technology) where he studied and received a degree in building engineering. After getting his degree in 1913, he then started working for Dyckerhoff & Widmann A.G., an engineering firm in Germany. In 1928 Dischinger went back to school to receive his doctorate at the Technische Hoschschule Dresden (now TU Dresden), Germany.[2] In 1922, he designed the Zeiss Planetarium in Jena with Walther Bauersfeld, using a thin-shell concrete roof in the shape of a hemisphere. Their system was subsequently patented, and Dischinger published a paper on the relevant mathematics in 1928.[3]
Since the previous stay and cable bridges in Dischinger's opinion were both flawed technically and disturbing looking, he decided to publish his own cable stayed bridge.[4] This design has been used ever since, more than 100 of these cable stayed bridges have been built.
For the 1938 design of a rail suspension bridge (not built), he had studied historical bridges incorporating inclined stay elements, such as those by Ferdinand Arnodin and John Roebling. He went on to design the 183 m span Strömsund Bridge in Sweden, completed in 1955 and generally considered the first of the modern tradition of cable-stayed bridges, although there had been many isolated examples of the bridge form before then. This employed a steel deck and cables, with large spacings between the stays typical of the early designs. It appears in Strömsund's coat of arms.[5]
Other key works include: