Seismic response of 3D steel buildings considering the effect of pr connections and gravity frames

Alfredo Reyes-Salazar, Edén Bojórquez, Achintya Haldar, Arturo López-Barraza, J. Luz Rivera-Salas

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The nonlinear seismic responses of 3D steel buildings with perimeter moment resisting frames (PMRF) and interior gravity frames (IGF) are studied explicitly considering the contribution of the IGF. The effect on the structural response of the stiffness of the beam-to-column connections of the IGF, which is usually neglected, is also studied. It is commonly believed that the flexibility of shear connections is negligible and that 2D models can be used to properly represent 3D real structures. The results of the study indicate, however, that the moments developed on columns of IGF can be considerable and that modeling buildings as plane frames may result in very conservative designs. The contribution of IGF to the lateral structural resistance may be significant. The contribution increases when their connections are assumed to be partially restrained (PR). The incremented participation of IGF when the stiffness of their connections is considered helps to counteract the no conservative effect that results in practice when lateral seismic loads are not considered in IGF while designing steel buildings with PMRF. Thus, if the structural system under consideration is used, the three-dimensional model should be used in seismic analysis and the IGF and the stiffness of their connections should be considered as part of the lateral resistance system.

Original languageEnglish (US)
Article number346156
JournalTheScientificWorldJournal [electronic resource]
Volume2014
DOIs
StatePublished - 2014

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Steel
Seismic response
Gravitation
seismic response
steel
gravity
stiffness
Stiffness
structural response
effect
modeling

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Medicine(all)

Cite this

Seismic response of 3D steel buildings considering the effect of pr connections and gravity frames. / Reyes-Salazar, Alfredo; Bojórquez, Edén; Haldar, Achintya; López-Barraza, Arturo; Rivera-Salas, J. Luz.

In: TheScientificWorldJournal [electronic resource], Vol. 2014, 346156, 2014.

Research output: Contribution to journalArticle

Reyes-Salazar, Alfredo ; Bojórquez, Edén ; Haldar, Achintya ; López-Barraza, Arturo ; Rivera-Salas, J. Luz. / Seismic response of 3D steel buildings considering the effect of pr connections and gravity frames. In: TheScientificWorldJournal [electronic resource]. 2014 ; Vol. 2014.
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