Analytical Model for Multi-Hazard Resilient Prefabricated Concrete Frame Considering Earthquake and Column Removal Scenarios

Lin, Kaiqi; Lu, Xinzheng; Li, Yi; Zhuo, Weidong; Ye, Lieping

doi:10.3389/fbuil.2018.00073

Cited by 1 publication

(1 citation statement)

References 34 publications

(64 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar phenomenon was also observed by Bernal (1992Bernal ( , 1998 in the study that estimated the response of a multi-DOF system using an equivalent single-DOF system, which was further developed by Adam et al (2004). Efforts were made to track the progressive collapse (Kiakojouri et al, 2020;Kiakojouri et al, 2021) accurately and efficiently (Scott and Fenves, 2010;Lin et al, 2018), including experiments on full-scale four-story and reduced-scale eighteen-story specimens using E-Defense, which is the largest shake table in the world (Nakashima et al, 2018;Nishi et al, 2023).…”

Section: Introductionsupporting

confidence: 59%

Inelastic torsional buckling of simple three-dimensional moment resisting frame

Fukuda,

Ikago,

Araki

et al. 2024

Front. Built Environ.

View full text Add to dashboard Cite

Recent massive earthquakes have raised concerns that megathrust earthquakes with magnitude 9 can occur in the near future. This article discusses the critical behavior of structures involving torsion caused by extreme ground motions. Unlike factors such as mass and stiffness eccentricity and accidental torsion in a structure that induce torsion, torsional buckling can occur in a moment-resisting frame (MRF) when all beam ends in the longitudinal and transverse directions yield in the lower stories, even if the frame is well designed and its eccentricity is negligibly small. In this study, the theoretically predicted buckling load was presented and validated via numerical analyses. This article shows that excluding the P-Delta effect resulted not only in underestimated deformation but also in overlooked torsional buckling. This study suggests that a high-rise MRF designed in accordance with modern seismic design codes can suffer torsional collapse when the beam ends of the lower stories yield owing to extreme ground motion. Based on these findings, we recommend considering the P-Delta effect when examining the critical behavior of high-rise buildings so as not to overlook the brittle failure mode.

show abstract