Continuity of profiled steel sheets assembled on intermediate supports Justification bu calculations according to Eurocodes

摘要

This paper describes part of the outcomes of GRISPE PLUS project (valorisation), carried out following GRISPE project (research). Both have been the subject of European RFCS subsidies and deal with 9 families of metal casing products. This article is devoted to one of the 9 product families, namely profiled steel sheet assemblies for flat roofing applications. After a presentation of the context describing several engineering problems, an inventory of the solutions currently available within the normative corpus is drawn up. The main results of GRISPE project are presented along with the conditions for using a design method. This design method involves profiled stell sheets assembled on a support in various configurations: single overlaping, double overlaping and continuous profile with local reinforcement on a support. These technologies induce a consequent contribution of additional resistance allowing, for example, to consider two statically determinate profiled steel sheets assembled as one and the same profile steel sheets in continuity (case of single and double overlapings). Calculation examples are presented in the last part to illustrate the application of this sizing method.