06.09.2017, 15:38 Uhr

Strengthening of steel bridges with high performance concrete

As a result of increasing heavy goods traffic and fatigue sensitive construction details, it is often not possible to achieve the originally assumed service life especially of older bridges. A method of strengthening steel bridges has been developed, which is based on replacing the asphalt pavement with high-strength concrete. The Federal Highway Research Institute (BASt) has commissioned LAP with accompanying investigations during the pilot application of this method in Germany.

During the pilot project, important foundations were established for using the procedure on major bridges at risk of fatigue. The method investigated demonstrates a clear improvement of the fatigue resistance of the construction. The result indicates the potential of a significant extension of service life.