Ductility of composite beams under negative bending: an equivalence index for reinforcing

摘要

Reinforcing steel actually available on the European market is generally characterised by a good strength, but also by reduced ductility; on the other hand European codes concerning concrete and composite structures point out the importance of using reinforcing steel with sufficient ductility. In this paper, the influence of the properties of reinforcing steel on the rotational capacity Of composite beams under negative bending is theoretically analysed using a refined model, Validated with experimental tests.