On the Applicability of Conventional Seismic Design Methodologies to Hybrid RC-Steel Systems

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Moreira, RF (Author) Other; Humberto Varum (Author) FEUP; J. M. Castro (Author) FEUP

Journal

Title: Buildings

Vol. 12

Final page: 1558

ISSN: 0007-3725

Publisher: MDPI

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-00X-AEA

DOI: 10.3390/buildings12101558

Abstract (EN): This paper addresses the application of conventional (force-based) seismic design methodologies to hybrid RC-steel systems. The q-factor-based EC8-3 seismic assessment procedure is first reviewed. A case-study application follows, analyzing and discussing the difficulties a practitioner will face when assessing the efficiency of a steel-brace retrofitting system designed within the framework of EC8-1. Afterward, the performance of the obtained retrofitted structure is evaluated using nonlinear analysis. The obtained results are discussed in light of the EC8-3 performance requirements, and conclusions are drawn about the adequacy of the force-based design (FBD) methodology (and associated q-factors) for such situations. The study shows that the process does not ensure the adequate seismic behavior of the retrofitted structures. It thus calls for the development of an effective performance-based design methodology that explicitly considers the interaction between the two structural systems (RC structure and steel braces), namely the influence of the steel braces' resistance on the deformation capacity of RC members.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 19