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

Navid Rahgozar , Abdolreza S. Moghadam , Armin Aziminejad

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.

Key Words

self-centering braced frame archetype; far-field and near-field pulse-like ground motions; nonlinear time history analysis; engineering demand parameters

Address

Navid Rahgozar, Armin Aziminejad: Department of Structural Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran Abdolreza S. Moghadam: Department of Civil Engineering, International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, Iran

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