Seismic performance factors of a dual system with IMRF and cable-cylinder bracing. (July 2021)

• Record Type: Journal Article
• Authors: Ghasemi, Marziyeh; Fanaie, Nader; Khorshidi, Hossein
• Is Part Of: Journal of building engineering. Volume 39(2021)
• Publication Date: 2021-07
• Subjects: Cable-cylinder bracing -- FEMA P695 methodology -- Seismic performance factors (SPFs) -- Incremental dynamic analysis (IDA) -- Nonlinear static analyses (pushover); Building -- Periodicals; 690.05
• DOI: 10.1016/j.jobe.2021.102309
• Languages: English
• ISSNs: 2352-7102

Abstract

Abstract: In recent years, numerous approaches have been adopted to improve the performance of structural systems during earthquakes. Cable-cylinder bracing is an innovative displacement-restraint bracing method using wire ropes or cables that are bundled together with a cylinder at their junction. As designing structures with cable-cylinder braces based on the current design guidelines requires design parameters for the system, in this study, Seismic Performance Factors (SPFs) consists of the response modification factor ( R ), the over-strength factor (Ω0 ), and the deflection amplification factor ( C d ) are quantified according to the methodology proposed by FEMA P695. Following this procedure, a set of 2-, 4-, 6-, and 8-story archetypes were designed based upon presumed SPFs. The performance of each archetype was then examined through conducting nonlinear static analysis (pushover) and Incremental Dynamic Analysis (IDA). Collapse probability of archetypes by utilizing fragility curves and considering uncertainty sources have been assessed. Required parameters were evaluated for the designed archetypes and the values were compared with the accepted criteria to confirm the initial assumed SPFs for the cable-cylinder bracing system. Graphical abstract: Image 1 Highlights: Investigating an innovative displacement-restraint bracing technique (cable-cylinder bracing system) Using the procedure proposed by FEMA P695 to evaluate the seismic behavior of the proposed system Conducting nonlinear static analyses and incremental dynamic analyses on nonlinear models Collapse assessment of archetypes by utilizing fragility curves and considering uncertainty sources