000011405 001__ 11405
000011405 005__ 20141205155907.0
000011405 04107 $$aeng
000011405 046__ $$k2008-10-12
000011405 100__ $$aRahai, Alireza
000011405 24500 $$aEffect of Vertical Motion of Earthquake on RC Bridge Pier

000011405 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011405 260__ $$b
000011405 506__ $$arestricted
000011405 520__ $$2eng$$aIn seismic design of RC piers, designers usually don't consider effect of vertical motion, however, measurements of ground motion during past earthquakes indicate that the vertical acceleration maybe exceed the horizontal acceleration. Analyses of actual bridges indicate that, in general, the vertical motion will increase the level of response and the amount of damage sustained by a highway bridge. Vertical motion generates fluctuating axial forces in the columns, which cause instability of the hysteresis loops. Furthermore, vertical motion can generate forces of high magnitude in the abutments and foundations that are not accounted for by the current seismic design guidelines. Also, the impulsive vertical motion induces the circumferential crack on RC piers. This paper presents analytical study for investigation of vertical motion effects on actual RC bridge. In this study, linear and nonlinear time history analysis (Tabas, Northridge and Kobe scaled records ) under two case of loading; in the first case, bridge was subject to horizontal motion of earthquakes whereas in the second case bridge was subject to horizontal motion of case1 in addition to vertical motion. Analyses indicate vertical motion will increase the axial loads, axial and shear strain and variation of longitudinal displacement and shear force are negligible.

000011405 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011405 653__ $$aVERTICAL MOTION, BRIDGE PIER, RC. 

000011405 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011405 720__ $$aRahai, Alireza$$iArezoumandi, Mehdi
000011405 8560_ $$ffischerc@itam.cas.cz
000011405 8564_ $$s139592$$uhttps://invenio.itam.cas.cz/record/11405/files/05-02-0104.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0104.
000011405 962__ $$r9324
000011405 980__ $$aPAPER