Interior Slab-Rectangular Column Connections Under Biaxial Lateral Loadings

摘要

Presented inthis paperisan experimental program involvingthe testing of five 3/4 scale, interior slab-rectangular column connections subjected to combined effects of gravity and biaxial unbalanced moments. This experiment investigates the effects of biaxial loading, and use of stud shear reinforcement, on the performance of the connections for rectangular columns with aspect ratio of 5. The main parameters studied are the strength, drift capacity, ductility, and stiffness of the slab-column connections. It was found that biaxial unbalanced moments reduce considerably the strength, ductility, drift capacity, and stiffness of the connection. It was also found that slab-column connections with rectangular columns having column aspect ratio of five and loaded biaxially may not be able to sustain a drift ratio of 1.5% even if gravity shear ratio V_g/V_ois kept less than 0.4.