000011452 001__ 11452
000011452 005__ 20141205155912.0
000011452 04107 $$aeng
000011452 046__ $$k2008-10-12
000011452 100__ $$aRodgers, Janise E.
000011452 24500 $$aEffects of Deformation Softening on Seismic Behavior of Steel Moment Frames

000011452 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011452 260__ $$b
000011452 506__ $$arestricted
000011452 520__ $$2eng$$aEngineers have become increasingly concerned about the potential effects of various forms of deterioration that may be experienced by moment-resisting frame structures during severe seismic excitations. The brittle connection fractures experienced by a number of welded steel moment-resisting frame structures during recent earthquakes have been the most extensively studied to date. However, recent cyclic testing of beam-column connections into the inelastic range demonstrates that connections may suffer other, more ductile forms of deterioration. Negative post-yield tangent stiffness, hereafter referred to as deformation softening, is of particular interest due to its potentially adverse effects on system behavior. The effects of deformation softening were examined as part of an integrated experimental and analytical investigation of the effects of various forms of hysteretic deterioration on steel moment frame system behavior. The experimental portion of this study consisted of a series of shaking table tests performed on a one-third scale, two-story, one bay, steel moment frame with idealized, mechanical connections. These tests and subsequent analytical studies show that, in general, significant loss of connection strength capacity, whether from deformation softening or other types of deterioration, leads to large peak and residual drifts and, for large pulse excitations with durations longer than the fundamental period of the structure, may cause collapse. Deformation softening was found to have substantial adverse effects on system behavior in many cases.

000011452 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011452 653__ $$apost-yield, stiffness, collapse, hysteretic, earthquakes 

000011452 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011452 720__ $$aRodgers, Janise E.$$iMahin, Stephen A.
000011452 8560_ $$ffischerc@itam.cas.cz
000011452 8564_ $$s857860$$uhttps://invenio.itam.cas.cz/record/11452/files/12-01-0093.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-01-0093.
000011452 962__ $$r9324
000011452 980__ $$aPAPER