Cyclic and monotonic performance of stiffened extended end-plate connections with large-sized bolts and thin end-plates
Küçük Resim Yok
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The cyclic and monotonic performance of stiffened extended end-plate joints with large-sized bolts and thin end-plates are investigated through experimental and numerical study. The variables affecting the capacity and behavior of these connections are examined under both monotonic and cyclic loading. Pursuant to these goals, six specimens in which end-plates were picked from thin plates of 10 mm, 8 mm and 6 mm were exposed to seismic and service loads. The seismic loading was applied using the cyclic loading protocol provided by AISC 341-16. The stiffened extended end-plate connections with thin end-plates and large bolts can be utilized in non-seismic applications as well as for partial strength connections and fuse members. A parametric numerical study including 156 numerical models investigating end-plate thickness, the type of I-section, end-plate width, diameter of bolt/washer, pitch distance, weld thickness and edge distance and distance from bolt row to beam flange as variables was performed. The plastic moment capacities obtained from the experimental and numerical findings are evaluated based on the design methods provided by current provisions such as EN1993-1-8 and AISC 358-16. The results indicated that the moment resistance of stiffened extended end-plate joints is underestimated by the current provisions. The ratio of the actual to predicted plastic moment resistance by AISC 358-16 and EC3:1-8 are averagely 2.31 and 2.77 for the numerical part. These ratios outcomes turned to 3.74 and 5.38 for the experimental findings. This underestimation can be associated with the span length between the plastic hinges and the observed yield line mechanism. A new method to accurately estimate the capacity is proposed. The ratio of the actual to predicted plastic moment resistance according to the developed expression is averagely 1.22 and 1.19 for the numerical and experimental findings, respectively.
Açıklama
Anahtar Kelimeler
Stiffener, Extended End-Plate Connection, Seismic, Cyclic, Stiffened, Thin, End-Plate, Yield Line
Kaynak
Bulletin Of Earthquake Engineering
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
20
Sayı
13
