Dispersion Analysis in Periodically Coupled Train–Bridge Systems
學年 114
學期 2
出版（發表）日期 2026-03-30
作品名稱 Dispersion Analysis in Periodically Coupled Train–Bridge Systems
作品名稱（其他語言）
著者 YJ. Wang; JD Yau; CH Chang; J Shi; S. Urushadze
單位
出版者
著錄名稱、卷期、頁數 International Journal of Structural Stability and Dynamics 26(07), p. 2541013
摘要 This study employs the wave dispersion relation of periodic structures to demonstrate the dual resonance mechanism occurring as a train traverses a series of bridges. Dual resonance occurs when the resonant speeds of both the train and the bridge coincide, leading to resonance in the bridge and progressively amplifying the train’s responses from the front to the rear carriages. This phenomenon involves a complex interaction between the bridge’s temporal resonance and the train’s spatial periodicity. This interaction creates a unique spatiotemporal vibration pattern. To understand the wave dispersion in this periodically coupled system, we model it as two interconnected spring-mass systems connected by contact springs. The analytical approach allows us to identify the key parameters governing the wave dispersion relation and wave-transmitting phenomena between two periodic structures. The wave dispersion analysis reveals that continuous beams have broader passbands, allowing them to transmit more waves and vibrations from moving trains than simply supported beams. This reduces resonance and leads to smoother system performance for continuous beams. Consequently, when a train travels on an equal-span continuous bridge at its resonance speeds, its vibrations can be efficiently transmitted to the bridge through these passbands, thereby mitigating resonance.
關鍵字 Coupled structures; dispersion; high-speed rail; periodic structure; resonance; unit cell; vehicle–bridge interaction
語言 en
ISSN
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Jong-Dar YAU
審稿制度 是
國別 SGP
公開徵稿
出版型式 ,電子版
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