Werner Vreden

Werner Vreden (1965)

Pedestrian overpass Lohfelder Straße / August-Lepper-Straße, stairway to the bridge (1982)

Werner Vreden (born July 21, 1924 in Bad Honnef ; † 1990 ) was a German civil engineer .

Life

Vreden came from a family that can be traced back to Honnef many centuries before. In 1942 he passed his Abitur at the secondary school there (today's Siebengebirgsgymnasium ) . After the war he studied mathematics , logic and epistemology at the University of Bonn until he was admitted to the Technical University of Aachen for the civil engineering course he had been striving for for a long time. In 1952 he graduated with a diploma ( Dipl.-Ing. ). Vreden then took up a job in a construction company, but in August 1953 he set up his own office in Bad Honnef. Initially operated by himself, the office already had three employees around 1955. At the beginning it was concerned with the construction of new bridges in prestressed concrete .

1962 designed Vreden a footbridge in Bonner district Poppelsdorf (Wielstraße) with a 180 ° curved continuous beams over five fields. Since there was no literature for the calculation of a continuous curved beam, he developed new formulas, which he published in May 1964 in the book The Calculation of the Curved Continuous Beam. This book received international attention in the professional world, was translated into English and reviewed in numerous professional journals. By 1966, Vreden had worked out a simplified calculation method for curved beams, which was included in another book. In 1966/67 he was approved as a test engineer for structural engineering , so that Vreden was able to expand his company into a test engineering office with 7–9 employees. In 1969 he was appointed by the American Concrete Institute (ACI) to a committee that worked out structural regulations for the USA. In the following years, Vreden traveled several times to specialist congresses in the USA.

Along with the increased area of responsibility and the level of awareness that Vredens gained, the office received orders for construction projects in Aachen , Bonn, Bremen , Düsseldorf , Heidelberg , Cologne and Stuttgart . In 1981 the engineer Werner Henneker joined the office as a partner, which over time grew to a size of 20 employees. After Vreden's death in 1990 he took over the office, moved it to Bonn and set up a second location in Leipzig . Today it is run under the name Henneker, Zillinger Ingenieure with headquarters in the Bonn district of Beuel .

Buildings (selection)

Pedestrian overpass Lohfelder Strasse / August-Lepper-Strasse (2014)

1958: Bad Honnef, pedestrian overpass Alexander-von-Humboldt-Straße / Rhine promenade over B 42 and railway line
1963: Bonn, Poppelsdorf district , Wielstrasse pedestrian overpass over the feeder expressway to the 565 federal motorway (with Wolfgang Arnds; client: Federal Republic of Germany)
1978: Bad Honnef, pedestrian overpass Lohfelder Straße / August-Lepper-Straße over the railway line with a circularly curved ramp structure on one side of the abutment

Publications

The calculation of the curved continuous beam , Ernst, Berlin 1964. (= Curved continuous beams for highway bridges , F. Ungar Pub. Co., 1969)
New general calculation method for arbitrarily supported curved beams , Ernst, Berlin 1966.

literature

Karl Garbe (Ed.): Bad Honnefer picture book. Junge Verlag, Bonn 1989, p. 75.

Web links

Commons : Werner Vreden - Collection of Images

Henneker, Zillinger Ingenieure - Development of the office

Individual evidence

^ ^A ^b ^c Henneker, Zillinger Ingenieure - Development of the office
↑ August Haag , Hans Neunkirchen (Hrsg.): Memorial to the inauguration of the municipal Siebengebirgsgymnasium Honnef am Rhein: March 21, 1959 , Siebengebirgsgymnasium, Honnef a. Rh. 1959, pp. 35, 49.
↑ ^a ^b ^c ^d ^e Karl Garbe (Ed.): Bad Honnefer picture book.
↑ Ursel and Jürgen Zänker: Building in Bonn room 49-69. Attempt to take stock . In: Landschaftsverband Rheinland (Hrsg.): Art and antiquity on the Rhine . Guide to the Rheinisches Landesmuseum Bonn . No. 21 . Rheinland-Verlag, Düsseldorf 1969, p. 201 f .
^ Werner Vreden: The pedestrian bridge over the federal railway in Bad-Honnef-Süd . In: Beton- und Stahlbetonbau , Volume 75 (1980), Issue 1 / January 1980, Ernst & Sohn , Berlin 1980, pp. 2–5.

personal data
SURNAME	Vreden, Werner
BRIEF DESCRIPTION	German civil engineer
DATE OF BIRTH	July 21, 1924
PLACE OF BIRTH	Bad Honnef
DATE OF DEATH	1990

[HennekerZillinger-1] A ^b ^c Henneker, Zillinger Ingenieure - Development of the office

[2] August Haag , Hans Neunkirchen (Hrsg.): Memorial to the inauguration of the municipal Siebengebirgsgymnasium Honnef am Rhein: March 21, 1959 , Siebengebirgsgymnasium, Honnef a. Rh. 1959, pp. 35, 49.

[Bilderbuch-3] Karl Garbe (Ed.): Bad Honnefer picture book.

[4] Ursel and Jürgen Zänker: Building in Bonn room 49-69. Attempt to take stock . In: Landschaftsverband Rheinland (Hrsg.): Art and antiquity on the Rhine . Guide to the Rheinisches Landesmuseum Bonn . No. 21 . Rheinland-Verlag, Düsseldorf 1969, p. 201 f .

[5] Werner Vreden: The pedestrian bridge over the federal railway in Bad-Honnef-Süd . In: Beton- und Stahlbetonbau , Volume 75 (1980), Issue 1 / January 1980, Ernst & Sohn , Berlin 1980, pp. 2–5.