Effect of Shear Stud Layout on the Seismic Behavior of Slab-Column Connections

Research purpose

Results from seismic tests have indicated poor performance by slab-column connections reinforced with an orthogonal shear stud layout which meets the requirements of ACI 318-08. Recent testing however suggests that seismic performance could be substantially enhanced by using slab-column connections reinforced with a radial layout of shear studs, as opposed to the traditional orthogonal layout. In this research project testing of two large-scale slab-column subassemblies with different shear stud layouts under combined gravity load and bi-axial lateral displacements will be conducted. Analysis of the data will enable developing a set of guidelines ready for practitioners’ use, with examples, for the design of slab-column connections with radial shear stud reinforcement. The data generated from this research, together with the design recommendations and code change proposal, will benefit the building industry by providing practicing engineers with the necessary tools for the safe and economical use of shear studs in slab-column connections.

University of Michigan
Project Area
Structural Engineering
CPF research grant #
Award amount
Grant period
Sep 2011 - Apr 2013
Grant Status
Principal Investigator
Professor Gustavo Parra-Montesinos
Industry champions

David Fields, Magnusson Klemencic Associates

CPF allies