T-Space at The University of Toronto Libraries >
School of Graduate Studies - Theses >
Please use this identifier to cite or link to this item:
|Title: ||Seismic Performance of Steel Moment-resisting Frames with Nonlinear Replaceable Links|
|Authors: ||Shen, Yunlu|
|Advisor: ||Christopoulos, Constantin|
|Department: ||Civil Engineering|
|Issue Date: ||14-Jul-2009|
|Abstract: ||This thesis presents the development and the seismic performance evaluation of steel MRFs with nonlinear replaceable links. Although existing MRFs can provide life safety during a design level earthquake, they are expected to sustain significant damage at the locations of flexural yielding fuses in the beams. The design of the fuse is also interlinked with the design of the beam, often resulting in over-design. These drawbacks can be mitigated by introducing replaceable links at the locations of expected inelastic action.
Four full-scale beam-to-column subassemblages with two link types were tested under cyclic loading: i) double channels with bolted web connections, ii) W-sections with bolted end plate connections. The experiments demonstrated that MRFs with replaceable links can provide strength and ductility equivalent to existing MRFs. Finite element models were then developed to capture the observed experimental responses, including local buckling, bolt slipping, and bolt bearing. Finally, preliminary design guidelines were proposed.|
|Appears in Collections:||Master|
Department of Civil Engineering - Master theses
Items in T-Space are protected by copyright, with all rights reserved, unless otherwise indicated.