000019333 001__ 19333
000019333 005__ 20170118182312.0
000019333 04107 $$aeng
000019333 046__ $$k2017-01-09
000019333 100__ $$aHutchinson, Tara
000019333 24500 $$aSeismic Response of a Model Moment-Frame Steel Building With Ductile-Anchor Uplifting Baseplate Connections

000019333 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019333 260__ $$b
000019333 506__ $$arestricted
000019333 520__ $$2eng$$aSeveral previous studies have shown that steel column baseplate connections that allow the structure to undergo rocking associated with column uplift may reduce building damage caused by strong earthquake motions. The use of concrete anchors as the ductile "fuse" to allow the uplift motion is an attractive option due to the relative ease with which the anchors may be replaced following a seismic event. More importantly, ductile-anchor column baseplate connections impart an inherently self-centering tendency to the system. In this study, we present results illustrating the robustness and practicality of the reusable anchor concept, as well as preliminary results from a program of dynamic shake-table testing of a miniature, three-story moment-frame building. The building was tested with different configurations of column baseplate connections and traditional frame fuses to allow behavior ranging from uplift-dominated to structural-hinge dominated. Configurations with ductile, uplifting baseplate connections experienced reduced seismic demands and damage, exhibiting well-delineated self-centering behavior. Under intense motions, the performance of the building was improved substantially, with significantly reduced residual drift. Mechanisms for this improved behavior, including frequency shift associated with boundary condition changes caused by anchor elongation, are discussed.

000019333 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019333 653__ $$aseismic demand reduction; rocking system; ductile concrete anchorage; seismic demand; dynamic testing

000019333 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019333 720__ $$aHutchinson, Tara$$iTrautner, Christopher
000019333 8560_ $$ffischerc@itam.cas.cz
000019333 8564_ $$s958308$$uhttps://invenio.itam.cas.cz/record/19333/files/3410.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3410.
000019333 962__ $$r16048
000019333 980__ $$aPAPER