Steel: Dissipative Column Base Connections for Moment Frames

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Description

Designing column base connections to be stronger than the attached column (to induce a plastic hinge in the column) is often expensive and inconvenient. The seminar will address the seismic performance and prospective use of “weak base” connections in steel moment frames. The aim of such design is to concentrate inelastic rotations in the base connections rather than in the connected columns. To achieve the high deformation capacity necessary for such design, a new base connection detail will be introduced; this connection features anchor rods in which the threads are milled to a smooth shank providing a designated stretch length over which inelastic deformations may be distributed. The seminar will summarize results from large-scale experiments on these details along with findings from complementary simulation studies – these include finite element simulations to generalize the test findings, and Nonlinear Time History Analysis on frames to examine seismic demands relative to the observed deformation capacities of these connections.

Course will award 1.5 hours of continuing education
This course is Diamond Review approved in 49 states. New York does not accept hours from recordings.

Please note: This webinar is part of the Seismic Connections Series and is not included in the NCSEA Webinar Subscription. The registration fee for the Series is $595 for members ($900 for nonmembers), which includes all 9 hours of education.

Contributors

Amit Kanvinde, PhD

Amit Kanvinde, PhD, is a professor in the department of civil and environmental engineering at the University of California, Davis. He currently serves on the AISC Connection Prequalification Review Panel (CPRP) and the Committee on Research. He is the recipient of the 2022 T.R. Higgins Lectureship Award from AISC, and has previously received AISC’s Special Achievement Award (2017) and various awards from ASCE. He is the co-author of the column base plate example (for Steel Moment Frames) in the SEAOC Seismic Design Manual.

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Description

Contributors

Amit Kanvinde, PhD