A parametric study of wave barriers for reduction of train-induced vibrations

作者：Yeong-Bin Yang^*; Hsiao-Hui Hung

来源：International Journal for Numerical Methods in Engineering, 1997, 40(20): 3729-3747.

DOI：10.1002/(SICI)1097-0207(19971030)40:203.0.CO;2-8

• Damping ratio
• Infinite element scheme
• Isolation effect
• Poisson ratio
• Shear modulus
• Train
• Wave barriers

In this paper, a finite/infinite element scheme developed previously by the authors is employed to investigate the effectiveness of three different wave barriers, i.e., the open trench, in-filled trench, and elastic foundation, in reducing the ground vibrations caused by the passage of trains. The mathematical model adopted herein is the two-dimensional profile that contains the cross-section of the railway, barrier and underlying soils, with the moving train loads simulated as a vertical harmonic line load. Concerning the effect of isolation, the geometric and material parameters of the three barriers investigated include the distance to rail, depth, width and thickness, damping ratio, shear modulus, mass density, Poisson's ratio, elastic modulus, etc. Also examined is the effectiveness of the three barriers with respect to different exciting frequencies. Conclusions are made regarding the selection of optimal parameter values for the three barriers in isolating the train-induced ground vibrations.

• 出版日期1997