Author/Authors :
Kazerani, S Department of Construction - Science and Research branch, Islamic Azad University, Kermanshah, Iran , Fanaie, N Civil Engineering Department - K.N.Toosi University of Technology, Tehran, Iran , Soroushnia, S Department of Civil Engineering - Islamic Azad University, Takestan Branch, Takestan, Iran
Abstract :
Reduced Beam Section (RBS) and Drilled Beam Section (DBS) are seismic moment resistant
frame connections, introduced after 1994 Northridge earthquake. RBS connection has been
tested under cyclic loading and showed acceptable performance. In this paper, seismic behavior
of Drilled Beam Section (DBS) connection is studied numerically using finite element method. A
drilled beam section of a cantilever H-beam has been subjected to cyclic loading at its free end
and studied for its optimal shapes. 62 samples of DBS connections have been modeled and
studied under cyclic and pushover loadings. Based on the results obtained in this research, the
connection shows its positive seismic behavior if the biggest hole is near the column face and its
diameter decreases as the holes move away from the column face. In this research the effects of
dimensions, position and number of holes are investigated using Von Mises stress and elastic
strain criteria under cyclic and monotonic loadings. In this drilled beam the smaller holes shift
plastic hinges out of the connection zone.
Keywords :
Energy Dissipation , Hysteretic , Cyclic Loading , Drilled Beam Section , Reduced Beam Section
