Dynamic Characteristics of Coupled Vehicle–Track–Tunnel Interaction System

Traditional studies simplify vehicle–track–tunnel system into vehicle–track or vehicle–tunnel models and neglect dynamics influences of vehicle on tunnel through track or track–tunnel on vehicle. This study established the mathematical model of vehicle and finite element model of track–tunnel to disclose vibration characteristics of vehicle–track–tunnel coupled dynamic system. Next, a vehicle– track–tunnel dynamic coupled model was established based on the wheel–rail displacement coordinated relation. Finally, variation laws of vehicle and stress and displacement fields of tunnel surrounding rock when the train travelled at speed of 200 km/h were studied under different track slab stiffness and track structures. Numerical simulation results demonstrate that vehicle vibration indexes change in the linear law with the increase in track slab stiffness. Sleeper embedded ballastless slab track has better damping reduction performance than sleeper buried ballastless slab track. The best damping reduction performance is achieved when the track slab stiffness is 3.5 kPa. The maximum vertical displacement and stress of the tunnel surrounding rock due to vibration at low levels and the tunnel surrounding rock slightly influence vibration indexes of vehicles. (Received in April 2017, accepted in October 2017. This paper was with the authors 3 months for 1 revision.)

[1]  Jens C. O. Nielsen,et al.  VERTICAL DYNAMIC INTERACTION BETWEEN TRAIN AND TRACK INFLUENCE OF WHEEL AND TRACK IMPERFECTIONS , 1995 .

[2]  P. Kozioł,et al.  Dynamic Response of a Beam Resting on a Nonlinear Foundation to a Moving Load: Coiflet-Based Solution , 2012 .

[3]  Kaiyun Wang,et al.  Reducing rail side wear on heavy-haul railway curves based on wheel–rail dynamic interaction , 2014 .

[4]  J. Riley Edwards,et al.  Numerical and experimental study on dynamic behaviour of concrete sleeper track caused by wheel flat , 2016 .

[5]  Javad Sadeghi,et al.  IMPORTANCE OF NONLINEARITY OF TRACK SUPPORT SYSTEM IN MODELING OF RAILWAY TRACK DYNAMICS , 2013 .

[6]  Udbhau I. Bhattiprolu,et al.  An efficient solution methodology to study the response of a beam on viscoelastic and nonlinear unilateral foundation: Static response , 2013 .

[7]  Nader Jalili,et al.  Vehicle–passenger–structure interaction of uniform bridges traversed by moving vehicles , 2003 .

[8]  Shaopu Yang,et al.  Investigation on dynamical interaction between a heavy vehicle and road pavement , 2010 .

[9]  H. Moosavi,et al.  Surface and thermal effects on vibration of embedded alumina nanobeams based on novel Timoshenko beam model , 2014 .

[10]  B. Liang,et al.  DYNAMIC ANALYSIS OF THE VEHICLE–SUBGRADE MODEL OF A VERTICAL COUPLED SYSTEM , 2001 .

[11]  Frederic Ward Williams,et al.  Non-stationary random vibration analysis of three-dimensional train–bridge systems , 2010 .

[12]  Zhou Zhiguo.  DYNAMIC RESPONSE ANALYSIS OF LINING STRUCTURE FOR TUNNEL UNDER VIBRATION LOADS OF TRAIN , 2006 .

[13]  Jian Wang,et al.  Dynamic analysis of the train and slab track coupling system with finite elements in a moving frame of reference , 2014 .

[14]  Rajib Ul Alam Uzzal,et al.  Modelling, validation and analysis of a three-dimensional railway vehicle–track system model with linear and nonlinear track properties in the presence of wheel flats , 2013 .

[15]  Jianyue Zhu,et al.  Recent developments in the prediction and control of aerodynamic noise from high-speed trains , 2015 .

[16]  Morteza Esmaeili,et al.  Dynamic Interaction of Vehicle and Discontinuous Slab Track Considering Nonlinear Hertz Contact Model , 2016 .

[17]  Ping Lou,et al.  Finite element formulae for internal forces of Bernoulli–Euler beams under moving vehicles , 2013 .