摘要
为研究钢弹簧浮置板在160 km/h的市域快线中应用的合理性,首先,通过室内试验确定适用于市域快线的钢弹簧隔振器,以及共享式隔振器的刚度和阻尼参数;其次,基于这些参数建立高速钢弹簧浮置板(high-speed steel spring floating slab track,简称HSFST)有限元模型,通过谐响应分析,对比HSFST与普通钢弹簧浮置板(steel spring floating slab track,简称FST)以及普通道床(ordinary track,简称OT)的隔振性能表现。结果表明:相比于OT,浮置板轨道具有更低的传递力和基础反力,且沿纵向能够更有效地传递变形和作用力;HSFST具有更高的隔振率,其固有频率和放大频段的范围均低于FST;共享式隔振器的应用可有效提高板间连接强度和力的传递效率,尽管这会增加共享隔振器所在位置的基础反力,但其他位置的基础反力得以显著降低;HSFST具有更低的变形、传递力、基础反力以及更高的隔振率,在市域快线中综合性能更优。
To study the feasibility of applying steel spring floating slab track to a 160 km/h urban express rail transit,first,indoor tests are used to determine the stiffness and damping ratio of the steel spring vibration isolators and the shared vibration isolators suitable for urban express rail transit.Then,a finite element model of a high-speed steel spring floating slab track(HSFST)is established based on these parameters.Through harmonic response analysis,its performance is compared with the steel spring floating slab track and ordinary track.The conclusions are as follows:The floating slab track exhibits lower transmission force and foundation reaction force than the ordinary track.It can transmit deformation and force more effectively in the longitudinal direction.The natural frequency and amplification frequency range of HSFST are lower than that of steel spring floating slab track,and the frequency band outside the vibration amplification area possesses a higher vibration isolation rate.The application of shared vibration isolators can effectively improve the connection strength and force transmission efficiency between slabs.While increasing the foundation reaction force at the location of the shared vibration isolators,it can also significantly reduce the foundation reaction force at other locations.In summary,HSFST is of lower deformation,transmission force,foundation reaction force,and higher vibration isolation rate,making it well-suited for urban express rail transit.
作者
黄相东
曾志平
罗信伟
李平
王卫东
HUANG Xiangdong;ZENG Zhiping;LUO Xinwei;LI Ping;WANG Weidong(School of Civil Engineering,Central South University Changsha,410075,China;National Engineering Research Center of High-speed Railway Construction Technology,Central South University Changsha,410075,China;Guangzhou Metro Design&Research Institute Co.,Ltd.Guangzhou,510010,China)
出处
《振动.测试与诊断》
北大核心
2025年第6期1173-1180,1275,1276,共10页
Journal of Vibration,Measurement & Diagnosis
基金
广州市越秀区科技工业和信息化局科技计划资助项目(2017-GX-024)。
关键词
市域快线
高速钢弹簧浮置板
钢弹簧隔振器
室内试验
谐响应分析
隔振率
urban express rail transit
high-speed steel spring floating slab track
steel spring vibration isolators
indoor tests
harmonic response analysis
vibration isolation rate
