Reference Type: Journal Article Record Number: 1 Author: Joh , C. B. and Chen, W. F. Year: 2005 Title: Effects of concrete slab on ductility of steel moment connections Journal: Advanced Steel Construction Volume: 1 Issue: 1 Pages: 20 Start Page: 3 Short Title: Effects of concrete slab on ductility of steel moment connections DOI: 10.18057/IJASC.2005.1.1.1 Keywords: Seismic Design, Concrete Slab, Local Ductility, Steel Moment Connection, Rupture Index, RelativeStrength Abstract: The effects of slab on the ductility of steel moment connections representing typical Japanese and USdetails are investigated based on an interpretation of existing composite connection tests and our own numericalanalyses. Different seismic behaviors between typical Japanese and US connections are also investigated. The resultsshow that the presence of slab: increases the beam strength, imposes a constraint near the beam top flange, and, as aconsequence, induces concentrated deformation near the beam bottom flange, which in turn reduces the ductility ofthe connection. The total deformation capacity of the connection depends not only on the beam but also on theconnecting column and panel zone. The detrimental slab effects and the relative strength between beams, column, andpanel zone should be considered in the seismic design of these connections. Author Address: Korea Institute of Construction Technology (KICT), 2311 Daehwa-Dong, ilsan-Gu, Goyang-Si, Gyeonggi-Do, 411-712 Korea./College of Engineering, University of Hawaii at Manoa 2540 Dole Street, Holmes Hall 240, Honolulu, HI 96822, USA.