Community Research and Development Information Service - CORDIS

Civil Engineering Structures

Current theoretical shear design models for reinforced concrete member design adopted by current design codes in Europe (EC2, Greek Code for Design of Concrete Works) and in the United States (ACI 318) accept the theoretical model of the truss analogue for the estimation of the shear available resistance of RC elements. Recent seismic behaviour of well designed columns in earthquakes as well as laboratory investigations at the RC Laboratory have, however, demonstrated the inability of this method to reliably predict the actual capacity of members in shear, being on both sides of conservatism: either uneconomic or unsafe. An improved design methodology has been put forward by the investigators for improving the theoretical prediction model, which has been proven to provide reliable estimates of the member capacity both for new and for retrofit design. Monotonic and cyclic tests of full size laboratory beam-column specimens tested herein using both conventional strength (ENV-1992 class C30) and high strength (ENV 1992 class C60) concretes, to evaluate the conventional and the proposed retrofit and design methodology. The results of the investigation show that the proposed method is able to predict the failure load of the elements much better than the conventional methods, therefore providing at the same time a safer and more ductile design.

Related information

Result In Brief

Reported by

National Technical University of Athens
Zografou Campus
15773 Athens
See on map
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top