Balanced Lift Method – Building Bridges Without Formwork
The balanced lift method is a building bridge method that was developed at the TU Wien. The most common methods to build bridges are the ones using falsework or the cantilever method, but a rather uncommon method, the lowering of arches is seen as the origin of the balanced lift method. The idea was to create a method which would allow a bridge to be built in a very fast manner without the usage of falsework, using prefabricated elements and mounting all parts together in a position – in this case vertically – that would simplify the construction process. In order to reach the final state of the bridge, the vertically assembled parts are rotated into their final horizontal position. This article contains a description of the development of the method, a large scale test will be portrayed and an already designed bridges using the balanced lift method will be shown.
KeywordsPrecast concrete elements Post-tensioning Bridge construction method Large-scale test
The financial support of the large scale test by Österreichische Forschungsförderungsgesellschaft (FFG), ASFINAG, ÖBB Infrastruktur AG and Vereinigung Österreichischer Beton- und Fertigteilwerke (VÖB) is gratefully acknowledged. The good cooperation with Schimetta Consult GmbH during the detailed design of the bridges for the S7 motorway, and with Franz Oberndorfer GmbH & Co. KG during the construction of the large scale test structure in Gars am Kamp, is also gratefully acknowledged.
The authors are also thankful to Wilhelm Ernst & Sohn Verlag GmbH & Co. KG for the permission to use material in this paper, which was previously published in the journal “Structural Concrete” (Kollegger et al. 2014).
- Fédération international du béton (fib). Awards given out every 4 years to Outstanding Concrete Structures. 2014 fib Awards for Outstanding Concrete Structures – International Federation of Structural Concrete (2014)Google Scholar