000012050 001__ 12050
000012050 005__ 20141205160014.0
000012050 04107 $$aeng
000012050 046__ $$k2008-10-12
000012050 100__ $$aWang, Yibai
000012050 24500 $$aSeismic Responses of a Cable-Stayed Bridge to Spatially Varying Ground Motions

000012050 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012050 260__ $$b
000012050 506__ $$arestricted
000012050 520__ $$2eng$$aA random vibration methodology is formulated for the seismic analysis of cable-stayed bridges subjected to spatially varying ground motions. The ground motion spatial variability consists of the wave passage, incoherence and site-response effects. It is shown that all these effects have significant influences on the seismic response of the structure. The bridge investigated in this paper is a 7-span composite concrete-steel cable-stayed bridge. The overall length of the bridge is 1150 m, with a central span of 720 m between its two towers. The towers are Y-shaped reinforced concrete structures, with a height of 233.8 m. The bridge deck consists of three independent box girders. The central one is a closed steel box girder with streamline shape, and the two side spans are concrete box girders. The width and height of the deck are 30 m and 3.5 m, respectively. The cables are arranged in a double-plane fan type. Each cable plane has 23 pairs of cables. These cables are anchored to the deck at a 15 m interval on the main span and an 8 m interval on the side spans. For the large uncertainties in the specification of earthquake ground motions, it is inevitable to conduct parametric studies to determine the range of variability of the structures responses. The method used in this paper is quite efficient and convenient for such analyses.

000012050 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012050 653__ $$abridge, earthquake, wave passage effect, incoherence effect, site-response effect

000012050 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012050 720__ $$aWang, Yibai$$iZhang, Yahui$$iZhao, Yan
000012050 8560_ $$ffischerc@itam.cas.cz
000012050 8564_ $$s118373$$uhttps://invenio.itam.cas.cz/record/12050/files/14-0078.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0078.
000012050 962__ $$r9324
000012050 980__ $$aPAPER