Seismic collapse performance of special moment steel frames with torsional irregularities
- Authors
- Han, Sang Whan; Kim, Tae-O; Kim, Dong Hwi; Baek, Seong-Jin
- Issue Date
- Jun-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Torsional irregularity; Inelastic response; Ground motion; Collapse performance; Story drift; Nonlinear response history analysis
- Citation
- Engineering Structures, v.141, pp.482 - 494
- Indexed
- SCIE
SCOPUS
- Journal Title
- Engineering Structures
- Volume
- 141
- Start Page
- 482
- End Page
- 494
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/152287
- DOI
- 10.1016/j.engstruct.2017.03.045
- ISSN
- 0141-0296
- Abstract
- Many building structures exhibit torsional irregularity, which is a type of horizontal irregularity. It is difficult to estimate the inelastic response of torsionally irregular structures subjected to earthquake ground motions using numerical analyses because torsionally irregular structures experience both lateral displacement and floor rotation. This study evaluates the collapse performance of multi-story model structures with various degrees of torsional irregularity via nonlinear response history analyses. This study also proposes a procedure for computing design story drift demands, which allows torsionally irregular structures to have uniform collapse risk irrespective of the degree of torsional irregularity. (C) 2017 Elsevier Ltd. All rights reserved.
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