Suspended bridges subjected to moving loads and support motions due to earthquake

doi:10.1016/j.jsv.2008.05.012

淡江大學機構典藏 > 工學院 > 建築學系暨研究所 > 期刊論文 > Item 987654321/50464

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題名:	Suspended bridges subjected to moving loads and support motions due to earthquake
作者:	Frýba, Ladislav;姚忠達;Yau, Jong-dar
貢獻者:	淡江大學建築學系
日期:	2009-01-01
上傳時間:	2010-08-09 17:59:14 (UTC+8)
出版者:	Elsevier
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.
關聯:	Journal of sound and vibration 319(1-2), pp.218-227
DOI:	10.1016/j.jsv.2008.05.012
顯示於類別:	[建築學系暨研究所] 期刊論文

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