Analysis of train-induced vibrations and vibration reduction schemes above and below critical Rayleigh speeds by finite element method

This paper simulates soil vibration under the train speed below and over the soil Rayleigh speed using the three-dimensional finite element method. Two vibration isolation schemes were studied including the soil improvement around the railway and the concrete slab constructed between the rail and soil. Numerical results indicate that the vibration increases considerably and decays slowly when the train speed exceeds the soil Rayleigh speed. The wave direction and dominant frequencies are the simple functions of the train speed, the soil Rayleigh speed and the train compartment length. When the train speed exceeds the shear wave speed, the vibration magnitude is critical and not sensitive to the train speed. To reduce this vibration, the two isolation schemes investigated in this study are useful for the train speed over the soil Rayleigh speed, but they are not efficient for the train speed below the soil Rayleigh speed.

[1]  Victor V. Krylov,et al.  Generation of Ground Vibrations by Superfast Trains , 1995 .

[2]  M. Rahman.  Fourier-transform solution to the problem of steady-state transonic motion of a line load across the surface of an elastic half-space (the corrected Cole-Huth solution) , 2001, Appl. Math. Lett..

[3]  Maurice Petyt,et al.  Ground vibration in the vicinity of a moving harmonic rectangular load on a half-space , 1998 .

[4]  Yeong-Bin Yang,et al.  Train-induced wave propagation in layered soils using finite/infinite element simulation , 2003 .

[5]  D. Le Houédec,et al.  GROUND VIBRATION IN THE VICINITY OF A HIGH-SPEED MOVING HARMONIC STRIP LOAD , 2000 .

[6]  Adrianus T. de Hoop,et al.  The moving-load problem in soil dynamics—the vertical displacement approximation , 2002 .

[7]  Shen-Haw Ju,et al.  Mass types, element orders and solution schemes for the Richards equation , 1997 .

[8]  D. C. Gakenheimer,et al.  Transient Excitation of an Elastic Half Space by a Point Load Traveling on the Surface , 1969 .

[9]  Chris Jones,et al.  Ground vibration generated by a load moving along a railway track , 1999 .

[10]  Shen-Haw Ju,et al.  Finite element analyses of wave propagations due to a high‐speed train across bridges , 2002 .

[11]  Shen-Haw Ju,et al.  Numerical investigation of a steel arch bridge and interaction with high-speed trains , 2003 .

[12]  George Lykotrafitis,et al.  The three-dimensional steady-state thermo-elastodynamic problem of moving sources over a half space , 2003 .

[13]  S. H. Ju,et al.  Three-Dimensional Analyses of Wave Barriers for Reduction of Train-Induced Vibrations , 2004 .

[14]  L Fryba,et al.  VIBRATION OF SOLIDS AND STRUCTURES UNDER MOVING LOADS (3RD EDITION) , 1999 .

[15]  Yeong-Bin Yang,et al.  Elastic waves in visco-elastic half-space generated by various vehicle loads , 2001 .

[16]  Bert Jan Kooij,et al.  The traveling point load revisited , 1999 .

[17]  Shen-Haw Ju,et al.  Time‐dependent absorbing boundary conditions for elastic wave propagation , 2001 .

[18]  Colin G. Gordon.  Generic criteria for vibration-sensitive equipment , 1992, Other Conferences.