教師資料查詢 | 類別: 期刊論文 | 教師: 姚忠達 Jong-dar Yau (瀏覽個人網頁)

標題:An equivalent additional damping approach to assess vehicle-bridge interaction for train-induced vibration of short-span railway bridges
學年107
學期2
出版(發表)日期2019/06/01
作品名稱An equivalent additional damping approach to assess vehicle-bridge interaction for train-induced vibration of short-span railway bridges
作品名稱(其他語言)
著者J.D. Yau; M.D. Martínez-Rodrigob; A. Doménechc
單位
出版者
著錄名稱、卷期、頁數Engineering Structures 188, p.469–479
摘要Constant moving load models are widely adopted in the dynamic analysis of railway bridges under moving trains. However, the use of this simple model may overestimate the resonant response of simply supported bridges if the vehicle-bridge interaction (VBI) effects are neglected, particularly for short spans. To account for the VBI effects, Eurocode 1 allows engineers to consider an additional amount of structural damping which depends on the bridge span. This method is the so-called Additional Damping Method (ADM), and was formulated in order to provide a conservative prediction of the interaction benefit. Nevertheless, the Additional damping method may sometimes yield to an unsafe prediction of the bridge peak response. Considering the interaction benefits, an alternative analytical approach based on an equivalent VBI model under resonant excitations is presented in this investigation. The key parameters dominating the additional damping problem are subsequently identified. According to the numerical demonstrations supplied, the presented approach provides insights that enable an accurate prediction of the additional amount of damping needed in order to account for VBI effects on short simply-supported railway bridges.
關鍵字Additional damping method;Eurocode;High-speed railway bridges;Moving loadsResonance;Vehicle-bridge interaction
語言英文(美國)
ISSN
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者JD YAU
審稿制度
國別美國
公開徵稿
出版型式,電子版
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