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http://dx.doi.org/10.12989/sem.2017.62.4.497

Response of self-centering braced frame to near-field pulse-like ground motions  

Rahgozar, Navid (Department of Structural Engineering, Science and Research Branch, Islamic Azad University)
Moghadam, Abdolreza S. (Department of Civil Engineering, International Institute of Earthquake Engineering and Seismology (IIEES))
Aziminejad, Armin (Department of Structural Engineering, Science and Research Branch, Islamic Azad University)
Publication Information
Structural Engineering and Mechanics / v.62, no.4, 2017 , pp. 497-506 More about this Journal
Abstract
A low damage self-centering braced frame equipped with post-tensioning strands is capable of directing damage to replaceable butterfly-shaped fuses. This paper investigates the seismic performance of rocking braced frame under near-field pulse-like ground motions compared to far-field records. A non-linear time history analysis is performed for twelve self-centering archetypes. A sensitivity analysis is carried out to examine the influences of ground motion types and modeling parameters. Findings represent the proper efficiency of the self-centering system under both far-field and near-field pulse-like ground motions.
Keywords
self-centering braced frame archetype; far-field and near-field pulse-like ground motions; nonlinear time history analysis; engineering demand parameters;
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