000021721 001__ 21721
000021721 005__ 20170622131301.0
000021721 04107 $$aeng
000021721 046__ $$k2017-06-15
000021721 100__ $$aMantawy, Islam
000021721 24500 $$aSEISMIC ASSESSMENT FOR A PRETENSIONED, ROCKING BRIDGE DESIGNED FOR RAPID CONSTRUCTION

000021721 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021721 260__ $$bNational Technical University of Athens, 2017
000021721 506__ $$arestricted
000021721 520__ $$2eng$$aA new bridge system has been developed to: 1) reduce on-site construction time by using precast components, 2) eliminate major earthquake damage by utilizing column rocking and confinement of the column ends with a steel tube, and 3) maintain the system functionality after a strong earthquake by minimizing residual drift through the use of pretensioned strands in the columns. A two-span, three-bent complete bridge using the new system has been tested at 25% scale on the shaking tables at the University of Nevada, Reno. The bridge was designed to have the same overall geometry, added mass, and lateral strength of a previously tested, cast-in-place bridge. The residual drifts were almost zero for all tests even after peak drifts more than 12%. At over two times the design load, the concrete damage consisted of a small number of hairline cracks and cosmetic spalling, while many of the reinforcing bars fractured but not the pretensioning strands. The prestressing strands remained elastic up to 3% drift, as intended. The damage to the cast-in-place structure included residual drift, major concrete spalling, spiral fracture, and buckling and fracture of the longitudinal bars.

000021721 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021721 653__ $$a

000021721 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021721 720__ $$aMantawy, Islam$$iEberhard, Marc$$iStanton, John$$iSanders, David$$iThonstad, Travis
000021721 8560_ $$ffischerc@itam.cas.cz
000021721 8564_ $$s116962$$uhttps://invenio.itam.cas.cz/record/21721/files/17630.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS30] Dynamics and Seismic Response of Rocking and Self-centering Structures
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000021721 962__ $$r21500
000021721 980__ $$aPAPER