Josef Hegger

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Josef Hegger (born October 31, 1954 in Tönisvorst ) is a German civil engineer and university professor.

Life

Josef Hegger, professor at RWTH Aachen

After graduating from high school Thomaeum in Kempen , Josef Hegger studied civil engineering from 1973 to 1979, specializing in structural engineering, at the Rheinisch-Westfälische Technische Hochschule Aachen . He then began his scientific career as an assistant to Professor Karl Kordina at the chair for solid construction and at the institute for building materials, solid construction and fire protection at the Technical University of Braunschweig . In 1984 he received his doctorate with the dissertation “Influence of the type of composite on the ultimate load-bearing capacity of prestressed concrete beams”.

In 1985 Josef Hegger switched to the construction industry. As a construction and project manager at Philipp Holzmann AG, he was involved in the construction of two skyscrapers, among other things: In the 186 m high Trianon skyscraper, high-strength concrete of strength class B 85 (according to the type of name at the time) was used for the first time in Germany. In the 115 m high Japan Center at Frankfurter Taunustor, a high-strength concrete of strength class B 105 with polypropylene fibers was used for the load-bearing facade.

In 1993 Josef Hegger was offered the chair for solid construction at the Rheinisch-Westfälische Technische Hochschule Aachen, in 1994 he founded his own engineering office, the Hegger und Partner engineering office; He has also been working as a test engineer for structural engineering since 1994, and in 1997 he became an expert at the Federal Railway Authority .

Josef Hegger is married and has a daughter.

research

Josef Hegger has been a scientist for more than 20 years. His research activities include the load-bearing and deformation behavior of reinforced concrete, prestressed concrete and composite structures as well as textile concrete components . In doing so, he examines both basic and application-oriented issues. In addition to the further and new development of construction and composite materials (high-performance concrete, textile-reinforced concrete), he also deals with integral constructions and sustainable building concepts that require interdisciplinary cooperation.

From the mid-1990s, Josef Hegger combined concrete with the technical textiles known from fiber composite plastics. This is how the now established new composite material "textile-reinforced concrete" was created. The first successful research results led to the Collaborative Research Center 532: Textile Reinforced Concrete - Basics for the Development of a New Technology, of which he was spokesman from 1999 to 2014. Josef Hegger has significantly shaped the development of the innovative material textile-reinforced concrete from the basics to the application. Numerous applications for facade systems, pedestrian bridges, reinforcement of buildings impressively demonstrate the performance of the newly developed material, whose importance for the built infrastructure will increase significantly in the future, both for new buildings and for existing buildings.

In addition to the SFB, Josef Hegger works on a large number of other DFG projects in structural engineering . Research topics are load-bearing structures made of ultra - high-strength concrete , shell structures made of fiber-reinforced concrete and in sandwich construction, origami folded structures, punching shear and shear force resistance, composite structures made of high-strength steel and concrete as well as fatigue, load-bearing capacity and reinforcement of prestressed concrete bridges . In addition to the DFG projects, he successfully carries out numerous research projects from public funds from the AiF, the BMBF, the EU, the Federal Highway Research Institute and the German Institute for Building Technology . Despite the wide range of project topics, the focus was always on transferring the findings from basic research into application.

The wide-ranging research work was reflected in more than 400 articles in national and international specialist journals and conference proceedings. Josef Hegger's active participation in many national and international bodies and standards committees has resulted in many of the knowledge he has gained being reflected in building standards and regulations.

Josef Hegger's high recognition as a scientist is also reflected in his two-time election as a DFG specialist college (2004-2012) and his admission to the North Rhine-Westphalian Academy of Sciences (2005).

In 2009 Josef Hegger was appointed chairman of the German standards committee for the dimensioning and construction of reinforced and prestressed concrete due to his excellent scientific achievements in structural engineering and practical engineering experience. In this function, he is also the elected German representative in the 25-person European standardization committee “Eurocode - Design of Concrete Structures”. He is also chairman of the European task group “Shear, Punching, Torsion - Ultimate Limit Design”, a focus of his research. He is also an active member of the International Federation for Structural Concrete. In two working groups, Josef Hegger contributes his current research results on the dimensioning of shear force , punching and torsion of reinforced and prestressed concrete .

Memberships

From 2004 to 2012 Josef Hegger was an elected review board of the German Research Foundation (DFG) in the review board "Building and Architecture", from 2014 to 2017 a member of the Senate and the main committee of the German Research Foundation . From 1997 to 2008 he was chairman of the standards committee for the construction of concrete structures (DIN 1045-3). He is currently chairman of the DIN committee “Dimensioning and Construction of Reinforced and Prestressed Concrete Structures”, an elected member and German representative in the European standardization committee “Design of Concrete Structures”. In addition, he is chairman of the European standardization working group "Shear, Punching, Torsion". Josef Hegger is a member of eight different expert committees of the German Institute for Structural Engineering (DIBt), a board member of the German Committee for Reinforced Concrete and he participates in two task groups of the International Federation for Structural Concrete fib. In addition, he is co-editor of the manual “Stahlbeton aktuell” published annually by Beuth-Verlag and of the specialist journal “Der Bauingenieur” from Springer-VDI-Verlag.

Since 2005 he has been a full member of the North Rhine-Westphalian Academy of Sciences and Arts in the class for engineering and economics.

Works

Trianon high-rise , Frankfurt a. M., 1993

Japan Center , Frankfurt a. M., 1996

Textile concrete bridge, Albstadt, 2010

Chio Bridge, Aachen, 2012

T3 pavilion, Aachen, 2014

Curtain wall, Neumarkt, 2015

Publications

  • Kueres, Dominik; Ricker, Marcus; Hegger, Josef: Improved Shear Reinforcement for Footings - Punching Strength inside Shear-Reinforced Zone. In: ACI Structural Journal 114, 6/2017, pp. 1445–1456, DOI: 10.14359 / 51689499
  • Kueres, Dominik; Siburg, Carsten; Herbrand, Martin; Claßen, Martin; Hegger, Josef: Uniform Design Method for punching shear in flat slabs and column bases. In: Engineering Structures 136, 2017, pp. 149–164, DOI: 10.1016 / j.engstruct.2016.12.064
  • Teworte, Frederik; Herbrand, Martin; Hegger, Josef: Structural Assessment of Concrete Bridges in Germany - Shear Resistance under Static and Fatigue Loading. In: Structural Engineering International 25, 3/2015, pp. 266-274, DOI: 10.2749 / 101686615X14210663188411
  • Scholzen, Alexander; Chudoba, Rostislav; Hegger, Josef: Thin-walled shell structures made of textile reinforced concrete (Part II): Experimental characterization, ultimate limit state assessment and numerical simulation. In: Structural Concrete 16, 1/2015, pp. 115–124, DOI: 10.1002 / suco.201400046
  • Shams, Ali; Horstmann, Michael; Hegger, Josef: Experimental investigations on textile-reinforced concrete (TRC) sandwich sections. In: Composite Structures, 118/2014, pp. 643–653, doi: 10.1016 / j.compstruct.2014.07.056
  • Chudoba, Rostislav; van der Woerd, Jan; Hegger, Josef; Schmerl, Matthias: ORICRETE - Modeling support for design and manufacturing of folded concrete structures. In: Advances in engineering software. Barking: Elsevier Science Publ., 2013, online publication. ISSN 0141-1195, 0965-9978
  • Teworte, Frederik; Hegger, Josef: Shear force fatigue of prestressed concrete girders without shear force reinforcement. In: Concrete and reinforced concrete construction 108, 1/2013, pp. 34–46, DOI: 10.1002 / best.201200057
  • Hegger, Josef; Sherif, Alaa G .; Roeser, Wolfgang: Nonseismic design of beam-column joints . In: ACI Structural Journal , 100 (2003), No. 5, pp. 654-664.
  • Hegger, Josef; Sherif, Alaa G .; Görtz, Stephan: Investigation of pre- and postcracking shear behavior of prestressed concrete beams using innovative measuring techniques . In: ACI Structural Journal , 101 (2004), No. 2, pp. 183-192.
  • Hegger, Josef; Voss, Stefan: Investigations on the load-bearing behavior and application potential of textile reinforced concrete . In: Engineering Structures (30), issue 7/2008, pp. 2050-2056.

Web links

Individual evidence

  1. ↑ Lighthouse project: Textile concrete bridge. Retrieved June 4, 2018 .
  2. ↑ R-Klein-Webdesign: News - Single view - Hahn-Helten. Retrieved June 4, 2018 .
  3. ↑ Udo Foerster: The new discovery of lightness . In: THE WORLD . June 13, 2012 ( welt.de [accessed June 4, 2018]).
  4. ↑ T3 RWTH Aachen Pavilion »Architectural Tours. Retrieved on June 4, 2018 (German).
  5. ↑ Thin, large-format curtain walls: textile concrete makes it possible . In: presseportal.de . ( presseportal.de [accessed June 4, 2018]).
personal data
SURNAME Hegger, Josef
BRIEF DESCRIPTION German civil engineer
DATE OF BIRTH October 31, 1954
PLACE OF BIRTH Tönisvorst