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Seismic performance evaluation of diagrid system buildings
Author(s) -
Kim Jinkoo,
Lee YoungHo
Publication year - 2012
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.643
Subject(s) - structural engineering , buckling , diagonal , ductility (earth science) , nonlinear system , shear (geology) , seismic loading , seismic analysis , geology , materials science , geotechnical engineering , engineering , composite material , mathematics , geometry , physics , creep , quantum mechanics
SUMMARY In this study, the seismic performance of typical diagrid structures was investigated. To this end, 36‐storey diagrid structures with various slopes of external braces were designed and their seismic responses were evaluated using nonlinear static and dynamic analyses. A tubular structure and a diagrid structure with buckling‐restrained braces were also designed with the same design loads, and their seismic performances were compared with those of the diagrid structures. According to the analysis results, the diagrid structures showed higher overstrength with smaller ductility compared with the tubular structure. It was also observed that as the slope of braces increased the shear lag effect increased and the lateral strength decreased. Both the strength and ductility of diagrid structures increased significantly when the diagonal members were replaced by buckling‐restrained braces. Copyright © 2010 John Wiley & Sons, Ltd.