Direct displacement-based design of special concentrically-braced frames in near-fault regions

Yahyai, Mahmood; Rezayibana, Bahram

doi:10.1007/s10518-015-9749-7

Cited by 4 publications

(1 citation statement)

References 18 publications

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“…It is capable of simulating various materials with different properties. In this study, all steel frames are made of Menegotto-Pinto material with isotropic and kinematic hardening with a strain hardening ratio of 1% [18]. To model the section of structural member elements (link beam, out of link beam, column and braces), nonlinear beam-column element of fiber section type with 150 fibers is used.…”

Section: Modeling Of Braced Framesmentioning

confidence: 99%

Effect of Fling-Step on Seismic Response of Steel Eccentrically Braced Frame Structures

Rezayibana

Norozikalehsar

Nourollahi

2018

NMCE

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Fling-step and forward directivity are two important characteristics of near-field earthquakes. Forward directivity occurs when the rupture propagates toward the site and arises in fault-normal direction for strike-slip faults. Fling-step is the consequence of permanent ground displacement imposed by near-field earthquakes and arises in strikeslip faults in the strike parallel direction. Fling-step effect produces permanent displacement at the end the culmination of displacement time history. This effect is usually omitted from the main record using the standard processing methods and therefore, cannot be determined for different structures. Many studies were performed to obtain seismic response of different structures subjected to near-field earthquake having forward directivity. On the other hand, there are few references to investigate the effect of flingstep on seismic behavior of structures. For this purpose, 14 earthquake records with flingstep are selected in a way that important factors including fling-step, PGV, PGA and the energy application type are different. The selected records are applied to eccentrically braced frame structures with 3, 6, 9 and 12 stories. A nonlinear time history analysis is used to capture displacement and story-drift ratio responses. The results show that the fling-step effect has no significant impact on any of the considered structures and its effect can be neglected in the case of eccentrically braced frame structures.

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Section: Modeling Of Braced Framesmentioning

confidence: 99%