Seismic response of slab-column connections with shear capitals
Wey, Eric Hamilton
Durrani, Ahmad J.
Master of Science
The punching shear strength of the slab usually governs the design of slab-column connections in regions of high seismicity. One method of increasing the shear capacity of the connection region is to increase the thickness of the slab using shear capitals. A shear capital is a thickened portion of the slab in the vicinity of the column used solely for improving the shear strength of the connection region. Three interior and three edge slab-column connections with different size shear capitals were tested under simulated earthquake type loading and compared to connections without shear capitals. Based upon the test results, the presence of a shear capital improves the strength and stiffness of a slab-column connection. A shear capital should be reinforced and have a sufficient length with respect to the depth of the slab when load reversals are expected.