Field measurements and analyses of environmental vibrations induced by high-speed Maglev.

Maglev, offers competitive journey-times compared to the railway and subway systems in markets for which distance between the stations is 100-1600km owing to its high acceleration and speed; however, such systems may have excessive vibration. Field measurements of Maglev train-induced vibrations were therefore performed on the world's first commercial Maglev line in Shanghai, China. Seven test sections along the line were selected according to the operating conditions, covering speeds from 150 to 430km/h. Acceleration responses of bridge pier and nearby ground were measured in three directions and analyzed in both the time and frequency domain. The effects of Maglev train speed on vibrations of the bridge pier and ground were studied in terms of their peak accelerations. Attenuation of ground vibration was investigated up to 30m from the track centerline. Effects of guideway configuration were also analyzed based on the measurements through two different test sections with same train speed of 300km/h. The results showed that peak accelerations exhibited a strong correlation with both train speed and distance off the track. Guideway configuration had a significant effect on transverse vibration, but a weak impact on vertical and longitudinal vibrations of both bridge pier and ground. Statistics indicated that, contrary to the commonly accepted theory and experience, vertical vibration is not always dominant: transverse and longitudinal vibrations should also be considered, particularly near turns in the track. Moreover, measurements of ground vibration induced by traditional high-speed railway train were carried out with the same testing devices in Bengbu in the Anhui Province. Results showed that the Maglev train generates significantly different vibration signatures as compared to the traditional high-speed train. The results obtained from this paper can provide good insights on the impact of Maglev system on the urban environment and the quality of human life nearby.

[1]  Yang Zhao,et al.  Analysis of dynamic response of the high-speed EMS maglev vehicle/guideway coupling system with random irregularity , 2007 .

[2]  Ju Lee,et al.  Review of maglev train technologies , 2006 .

[3]  Guoqiang Wang,et al.  Vibration Characteristic Analysis of Elevated Maglev Transportation , 2015 .

[4]  Hitoshi Tsunashima,et al.  Static and Dynamic Performance of Permanent Magnet Suspension for Maglev Transport Vehicle , 1998 .

[5]  Paul Bousquet.  MAGLEV DEPLOYMENT PROGRAM FINAL PROGRAMMATIC ENVIRONMENTAL IMPACT STATEMENT. , 2001 .

[6]  J. D. Yau,et al.  An iterative interacting method for dynamic analysis of the maglev train―guideway/foundation―soil system , 2011 .

[7]  Mohammad Ali Rezvani,et al.  Development of Maglev Guideway Loading Model , 2011 .

[8]  Yuan Cao,et al.  Numerical Simulation of High-Speed Maglev Vehicle-Guideway-Tunnel-Soil System , 2012 .

[9]  Moon-Young Kim,et al.  Dynamic interaction analysis of actively controlled maglev vehicles and guideway girders considering nonlinear electromagnetic forces , 2012 .

[10]  Hyungsuk Han,et al.  Korea's Urban Maglev Program , 2009, Proceedings of the IEEE.

[11]  Hamid Yaghoubi,et al.  The Most Important Maglev Applications , 2013 .

[12]  Jiangfeng Wang,et al.  High-speed maglev train-guideway–tunnel–soil modelling of ground vibration , 2012 .

[13]  J. D. Yau,et al.  Aerodynamic vibrations of a maglev vehicle running on flexible guideways under oncoming wind actions , 2010 .

[14]  Moon-Young Kim,et al.  A parametric study on the dynamics of urban transit maglev vehicle running on flexible guideway bridges , 2009 .

[15]  Hyung-Suk Han,et al.  Coupled vibration analysis of Maglev vehicle-guideway while standing still or moving at low speeds , 2015 .

[16]  Georges Kouroussis,et al.  Railway-induced ground vibrations – a review of vehicle effects , 2014 .

[17]  Kai Wei,et al.  Experimental investigation into ground vibrations induced by very high speed trains on a non-ballasted track , 2015 .

[18]  J. D. Yau,et al.  Response of a maglev vehicle moving on a series of guideways with differential settlement , 2009 .

[19]  W. M. Zhai,et al.  Maglev Vehicle/Guideway Vertical Random Response and Ride Quality , 2002 .

[20]  J. D. Yau,et al.  Interaction response of maglev masses moving on a suspended beam shaken by horizontal ground motion , 2010 .

[21]  Lutz Auersch,et al.  Ground vibration due to railway traffic—The calculation of the effects of moving static loads and their experimental verification , 2006 .

[22]  Shoei-Sheng Chen,et al.  Vehicle/Guideway Dynamic Interaction in Maglev Systems , 1996 .

[23]  Moon-Young Kim,et al.  Dynamic interaction analysis of urban transit maglev vehicle and guideway suspension bridge subjected to gusty wind , 2008 .