桥梁工程学术英语PPTPPT文件格式下载.pptx

1、 Rapid assessment of foundation scour using the dynamic features of bridge superstructure name：#Student ID：#Author：#Rudolf SeracinoDepartment of Civil,Construction and Environmental Engineering,North Carolina State University，Raleigh,NC 27695-7908,USA Adel ElsaidDar Al-Handasah Consultants,14 Gezire

2、t Al-Arab St.,Mohandeseen,P.O.Box:#895,Cairo 11511,EgyptJournal:#Construction and Building MaterialsStructureIntroduction&#BackgroundNumerical simulationExperimental workConclusions 数值模拟数值模拟BackgroundScourFloodHydraulic LoadingIntroductionIntroduction:#A critical review of the up-to-date literature

3、showed that hydraulic loading,including scour,is responsible for about 50%of the failed bridges over the period of 1989-2000.The primary focus of this research is the development and evaluation of damage detection techniques capable of rapidly identifying and possibly quantifying the extent of deter

4、ioration of critical coastal bridges due to scour at submerged piers without underwater instrumentation.This paper illustrates,for the first time,the use of horizontally-displaced mode shapes and the calculated change in the dynamic flexibility features to identify scour from the response of the bri

5、dge superstructure.动力弹性特性动力弹性特性 Primary ObjectiveScour Detection TechniqueUnderwater InstrumentationLong-termMonitoring Dynamic behavior ofthe bridge superstructureonlyNumerical SimulationFE Model HorizontalMode ShapesExperimental WorkIdealized Bridge Test Setup AccelerometerLocation理想化桥梁试验装置加速计布置ConclusionsVertical Mode ShapesScourDynamic Features of SuperstructureMagnitude of ScourNatural Frequencies1.2.Horizontal Mode Shapesinsensitivesensitive3.LocationExtentPresence？#自振频率Thank youThank you！#