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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.