Development of Enhanced Seismic Compactness Requirements for Webs in Wide-Flange Steel Columns

Küçük Resim Yok

Tarih

2021

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

American Society of Civil Engineers (ASCE)

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Recent full-scale testing of steel wide-flange columns under axial compression and cyclic lateral drifts for special moment frame applications showed that deep, slender columns could experience significant flexural strength degradation due to plastic hinge formation with buckling modes and considerable axial shortening within the hinge. Test results showed that the interaction between web and flange local buckling played a significant role for the observed degradation, even when the cross-sectional elements met the highly ductile limiting width-to-thickness ratios specified in the current seismic design standard for steel frames. These observations were also confirmed by numerical simulations. Enhanced limiting width-to-thickness ratios for the web of a wide-flange column for both special and intermediate steel moment frames are proposed to limit the severity of strength degradation and axial shortening. © 2021 American Society of Civil Engineers.

Açıklama

Anahtar Kelimeler

Buckling, Seismic design, Steel moment frames, Wide-flange columns, Width-thickness ratios, Buckling, Hinges, Seismic design, Seismology, Steel construction, Steel testing, Axial shortening, Flange local buckling, Full-scale testing, Slender columns, Special moment frames, Steel moment frames, Strength degradation, Width-to-thickness ratio, Flanges

Kaynak

Journal of Structural Engineering (United States)

WoS Q Değeri

Q2

Scopus Q Değeri

Q1

Cilt

147

Sayı

7

Künye