000011219 001__ 11219
000011219 005__ 20141205155848.0
000011219 04107 $$aeng
000011219 046__ $$k2008-10-12
000011219 100__ $$aOmar, Mohamed
000011219 24500 $$aSeismic Response Analysis of Cable-Stayed Bridge Towers with Isolated Base

000011219 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011219 260__ $$b
000011219 506__ $$arestricted
000011219 520__ $$2eng$$aThe traditional approach to seismic hazard mitigation is to design structures with sufficient strength capacity and the ability to deform in a ductile manner. Alternatively, newer concepts of structural control have been growing in acceptance as design alternative for earthquake hazard mitigation. The control systems can be used as base isolators to achieve different objectives or performance goals ranging from a life safety standard to a higher standard that would provide damage control. In this study, an isolated base connection modeling is presented in order to enhance seismic behavior of bridge towers by using viscoelastic material. The material and geometrical nonlinear behavior of the base plate is considered. Nonlinear contact of the bridge towers with the base plate and concrete foundation has been demonstrated and its implementation in a finite element nonlinear analysis is presented. A time domain finite element methodology for nonlinear dynamic analysis problem is developed. That accounts for the isolated bridge towers and the inelastic behavior of base plate through an incremental-iterative procedure. A representative problem of cable-stayed bridge towers subjected to a strong ground motion is analyzed. The study shows how the proposed isolated connection enhances the seismic behavior of the bridge towers.

000011219 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011219 653__ $$aCable-stayed bridge towers, isolated base, nonlinear response, base connection

000011219 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011219 720__ $$aOmar, Mohamed$$iHayashikawa, Toshiro$$iAbdel Raheem, Shehata E.
000011219 8560_ $$ffischerc@itam.cas.cz
000011219 8564_ $$s438847$$uhttps://invenio.itam.cas.cz/record/11219/files/05-02-0053.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0053.
000011219 962__ $$r9324
000011219 980__ $$aPAPER