000011451 001__ 11451
000011451 005__ 20141205155912.0
000011451 04107 $$aeng
000011451 046__ $$k2008-10-12
000011451 100__ $$aRodgers, Geoffrey W
000011451 24500 $$aInvestigation of Rocking Connections Designed for Damage Avoidance with High Force-to-Volume Energy Dissipation

000011451 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011451 260__ $$b
000011451 506__ $$arestricted
000011451 520__ $$2eng$$aModern structures are designed with a sacrificial design principle that values life safety at the expense of energy-absorbing structural damage. The significant long term economic impact of major seismic events due to the resulting structural damage demands a new generation of structures that can withstand large earthquakes with minimal or zero damage - while guaranteeing life safety. This research presents a new approach to damage avoidance design (DAD) connections that absorb significantly more seismic energy than sacrificially designed structures. The design approach utilizes hinged or rocking connections with energy absorption provided by small volume, high force (100-400kN) lead dampers designed to fit within standard structural connections. Proof of concept experimental results are presented for three connections, including: 1) 3D exterior post-tensioned RC connection; 2) corner post-tensioned RC connection; and 3) 2D exterior steel connection. Experiments are conducted on scaled specimens which are subjected to repeated reversed cycles of seismic drifts from 0.5-4.0% in increments of 0.5-1.0%. The high force-to-volume (HF2V) dampers reliably provide over 20% more damping than other systems – and do so on every motion cycle. It is therefore concluded that this novel DAD connection can provide sustained superior energy dissipation without damage.

000011451 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011451 653__ $$aHigh force-to-volume (HF2V), Damage Avoidance Design (DAD), lead extrusion dampers, energy dissipation, precast, post-tensioned, rocking connections

000011451 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011451 720__ $$aRodgers, Geoffrey W$$iDhakal, Rajesh P$$iChase, Geoff$$iMander, John B$$iMacRae, Gregory$$iMander, Thomas J$$iSolberg, Kevin M
000011451 8560_ $$ffischerc@itam.cas.cz
000011451 8564_ $$s355120$$uhttps://invenio.itam.cas.cz/record/11451/files/11-0043.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 11-0043.
000011451 962__ $$r9324
000011451 980__ $$aPAPER