KIT Steel and Lightweight Structures

Integral and Holistic Design of Road Bridges based on Hierarchical Models (IntegBridge, P 1281)

Ganzheitliche Integrale BrückenplanungTim Zinke


Bridges are an indispensable part of the German transport infrastructure. The approx. 39,000 trunk road bridges in Germany are necessary for the functioning of the economic system. However, the road bridge portfolio in Germany is in a poor condition. A large number of rehabilitation and new construction measures will therefore be necessary in the next few years in order to maintain the performance of the trunk road network.

The basic objective of the research project is the development of calculation algorithms that allow a model-based determination of economic, ecological and macroeconomic effects in the life cycle of bridge structures in early planning phases. For different planning phases, possibilities will be worked out how the (partially) automated use of structural model data in life cycle analyses can succeed. A database schema for bridge components will be created and exemplarily filled with content for steel structures.

Due to the multitude of parameters and dependencies to be considered, the implementation of the calculation is planned in a software. This will make it possible for the first time to carry out a project-specific and holistic comparison of variants for bridges. For example, a comparison of different structural systems (e.g. integral bridge and doubtful bridge), different design variants (e.g. different corrosion protection systems) and different motorway situations (e.g. for a commuter motorway or a weekend motorway with different traffic volumes) is possible. In this way, the life cycle performance of steel and steel composite structures can be calculated and benefits quantified, e.g. in the form of reduced economic costs.


Industrial partners, public sector partners

  • ArcelorMittal
  • Dillinger Hüttenwerke AG
  • Ingenieurgruppe Bauen
  • Krebs+Kiefer
  • Max Bögl
  • Harrer Ingenieure GmbH
  • Schüßler-Plan
  • DB Netz AG
  • Bundesanstalt für Straßenwesen
  • Regierungspräsidium Karlsruhe
  • Regierungspräsidium Freiburg