Conceptualisation of semi-precast elements for bridge construction using semi-embedded composite dowels

Report, vol. 25, pp. 1601–1608

Abstract

With the growing need for bridge renovations and replacements, fast and cost-effective solutions are essential. In recent years, composite construction has become increasingly common for short- and medium-span bridges over roads and railways, while prefabricated construction elements play a crucial role regarding flexibility and reduced construction times. In prefabricated composite bridges, the composite joint is typically secured with headed studs. As an innovative approach composite dowels are used, to enable material savings while exhibiting favourable fatigue behaviour. The dowels secure both the prefabricated concrete slab and the in-situ concrete layer. In this study, composite dowels in prefabricated bridge elements are investigated through push-out tests, assessing load-bearing behaviour in the semi-embedded constructive stage. Theoretical considerations were also made in order to optimise the test setup for future investigations.

Authors 5

1. Till Janiak Aachen Institute of Structural Concrete

   RWTH Aachen University

   Affiliation as printed

   Institute of Structural Concrete, RWTH Aachen University, Aachen, Germany

2. Martin Claßen Aachen Institute of Structural Concrete

   RWTH Aachen University

   Affiliation as printed

   Institute of Structural Concrete, RWTH Aachen University, Aachen, Germany

3. Nils Rittich Aachen Institute of Steel Construction

   RWTH Aachen University

   Affiliation as printed

   Institute of Steel Construction, RWTH Aachen University, Aachen, Germany

4. Kevin Wolters Aachen Institute of Steel Construction

   RWTH Aachen University

   Affiliation as printed

   Institute of Steel Construction, RWTH Aachen University, Aachen, Germany

5. Markus Feldmann Aachen Institute of Steel Construction

   RWTH Aachen University

   Affiliation as printed

   Institute of Steel Construction, RWTH Aachen University, Aachen, Germany