A Case Study on the Collapse Assessment of the Steel Moment-Frame Setback High-Rise Tower

Marzie Shahini, S. Rasoul Mirghaderi

Research output: Contribution to journalAbstract

Abstract

This paper describes collapse assessments of a steel moment-frame high-rise tower with setback irregularity, designed per the 2010 ASCE7 code, under spectral-matched ground motion records. To estimate a safety margin against life-threatening collapse, an analytical model of the tower is subjected to a suite of ground motions with incremental intensities from maximum considered earthquake hazard level to the incipient collapse level. Capability of the structural system to collapse prevention is evaluated based on the similar methodology reported in FEMA P695. Structural performance parameters in terms of maximum/mean inter-story drift ratios, residual drift ratios, and maximum plastic hinge rotations are also compared to the acceptance criteria recommended by the TBI Guidelines. The results demonstrate that the structural system satisfactorily safeguards the building against collapse. Moreover, for this tower, the code-specified requirements in ASCE7-10 are reasonably adequate to satisfy seismic performance criteria developed in the TBI Guidelines for the maximum considered earthquake hazard level.
Original languageEnglish
Pages (from-to)1-1
Number of pages1
JournalInternational Journal of Architectural and Environmental Engineering
Volume4
Issue number1
Early online date27 Sep 2016
Publication statusPublished - 2017
EventICTBMS 2017 : 19th International Conference on Tall Buildings and Masonry Structures - Durban, South Africa
Duration: 12 Jan 201713 Jan 2017

Keywords

  • high-rise buildings
  • set back
  • residual drift
  • seismic performance

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