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dc.contributor.authorShinozuka, M.en_US
dc.contributor.authorSaxena, V.
dc.contributor.authorDeodatis, G.
dc.date.accessioned2010-07-29T16:22:51Zen_US
dc.date.accessioned2010-08-17T17:13:29Zen_US
dc.date.accessioned2014-02-10T20:26:32Z
dc.date.available2010-07-29T16:22:51Zen_US
dc.date.available2010-08-17T17:13:29Zen_US
dc.date.available2014-02-10T20:26:32Z
dc.date.issued2000en_US
dc.identifier00-0013en_US
dc.identifier.govdocPB2001-108755en_US
dc.identifier.urihttp://hdl.handle.net/10477/871en_US
dc.description.abstractA methodology is developed to generate spatially varying ground motion time histories along the length of a long, multi-span bridge at its supports. Spatial variability of seismic ground motion can be mainly attributed to the differences in arrival times of seismic waves at different locations (the wave passage effect); loss of coherence of seismic waves due to multiple reflections refraction as they propagate through the highly inhomogeneous soil medium (incoherence effect); and change in the amplitude and frequency content of seismic ground motion due to different local soil conditions, (local soil effect). Our methodology reflects all three effects. Representative bridges were analyzed using two cases of ground motions at bridge supports: 1 ) input motions identical at all supports; 2) different input motions at each pier along the length of the bridge reflecting wave passage, incoherence and local soils effects. A sensitivity analysis was carried out as a function of various parameters controlling spatial variability. Based on study results, two guidelines were proposed: one for highway bridges less 1,500 feet with all supports on the same local soil conditions, and another for bridges more than 1, 500 feet long or of any length with supports on different local soil conditions.en_US
dc.description.sponsorshipPrinceton Universityen_US
dc.format.extent266en_US
dc.titleEffect of Spatial Variation of Ground Motion on Highway Structuresen_US


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