Suspended bridges subjected to moving loads and support motions due to earthquake
學年 97
學期 1
出版(發表)日期 2009-01-01
作品名稱 Suspended bridges subjected to moving loads and support motions due to earthquake
作品名稱(其他語言)
著者 Frýba, Ladislav; 姚忠達; Yau, Jong-dar
單位 淡江大學建築學系
出版者 Elsevier
著錄名稱、卷期、頁數 Journal of sound and vibration 319(1-2), pp.218-227
摘要 The paper deals with the vibration of suspended bridges subjected to the simultaneous action of moving loads and vertical support motions due to earthquake. The basic partial integro-differential equation is applied to the vertical vibration of a suspended beam. The dynamic actions of traffic loads are modelled as a row of equidistant moving forces, while the earthquake is considered by vertical motions of supports. The governing equation is solved first analytically to receive an ordinary differential equation and next numerically. Moreover, the designed world's largest suspended bridge—Messina Bridge—is investigated (central span of length 3.3 km). The paper studies the effect of various lags of the earthquake arrival because the earthquake may appear at any time when the train moves along a large-span bridge. The modified Kobe earthquake records have been applied to calculations. The results indicate that the interaction of both the moving and seismic forces may substantially amplify the response of long-span suspended bridges in the vicinity of the supports and increase with the rising speed of trains.
關鍵字
語言 en
ISSN 0022-460X
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度
國別 GBR
公開徵稿
出版型式 ,電子版
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