000009329 001__ 9329
000009329 005__ 20141205150155.0
000009329 04107 $$aeng
000009329 046__ $$k2008-10-12
000009329 100__ $$aAbdel Raheem, Shehata E.
000009329 24500 $$aInnovative Control Strategy for Seismic Pounding Mitigation of Bridge Structures

000009329 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009329 260__ $$b
000009329 506__ $$arestricted
000009329 520__ $$2eng$$aDamages of adjacent bridge structures due to relative responses such as poundings and unseating have been observed in many earthquakes. The isolators in bridge structures are effective in mitigating the induced seismic forces, however, the deck displacement becomes excessively large when subjected to a ground motion with unexpected characteristics, therefore increase the possibility of pounding; contribute to the unseating of bridge decks and subsequent collapse. An analytical model of expansion joints that takes account of the interaction between adjacent segments of the bridge deck and the effect of impact and restrainers is developed for nonlinear time history analysis. The numerical results show that pounding between adjacent bridge segments could amplify the relative displacement, resulting in the requirement of a longer seat width to support the deck. Pounding results in a transfer of large lateral force from a deck to the other, consequently, results in significant changes in the global response of the participating structural systems. So it is effective to provide a shock absorber between adjacent decks for the mitigation of pounding effect.

000009329 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009329 653__ $$aPounding mitigation, Expansion joint, Seismic design, Bridge, Shock absorber, Unseating prevention, Restrainers.

000009329 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009329 720__ $$aAbdel Raheem, Shehata E.$$iHayashikawa, Toshiro
000009329 8560_ $$ffischerc@itam.cas.cz
000009329 8564_ $$s980754$$uhttps://invenio.itam.cas.cz/record/9329/files/05-02-0107.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0107.
000009329 962__ $$r9324
000009329 980__ $$aPAPER