Seismic Resilience and Design Factors of Inline Seismic Friction Dampers (ISFDs)

Author:

Naghshineh Ali1,Bagchi Ashutosh1ORCID,Tehrani Fariborz M.2ORCID

Affiliation:

1. Department of Building, Civil and Environmental Engineering Concordia University, Montreal, QC H3G 1M8, Canada

2. Department of Civil & Geomatics Engineering, California State University, Fresno, CA 93740-8030, USA

Abstract

While damping devices can provide supplemental damping to mitigate building vibration due to wind or earthquake effects, integrating them into the design is more complex. For example, the Canadian code does not provide building designs with inline friction dampers. The objective of this present article was to study the overstrength, ductility, and response modification factors of concrete frame buildings with inline friction dampers in the Canadian context. For that purpose, a set of four-, eight-, and fourteen-story ductile concrete frames with inline seismic friction dampers, designed based on the 2015 National Building Code of Canada (NBCC), was considered. The analyses included pushover analysis in determining seismic characteristics and dynamic response history analysis using twenty-five ground motion records to assess the seismic performance of the buildings equipped with inline seismic friction dampers. The methodology considered diagonal braces, including different 6 m and 8 m span lengths. The discussion covers the prescribed design values for overstrength, ductility, and response modification factors, as well as the performance assessment of the buildings. The results revealed that increasing the height of the structure and reducing the span length increases the response modification factors.

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

Reference38 articles.

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2. Naghshineh, A. (2021). Seismic Resilience and Performance Design Approach for Concrete Moment Resisting Frame Buildings Equipped with Yielding Restrained Braces. [Ph.D. Thesis, Concordia University].

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