Modelling track and ground vibrations for a slab ballastless track as an infinitely long periodic structure subject to a moving harmonic load

• Published in: Journal of sound and vibration Vol. 489; p. 115760
• Main Authors: Peng, Yuhao, Sheng, Xiaozhen, Cheng, Gong
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 22.12.2020; Elsevier Science Ltd
• Subjects: Beamforming; Concrete slabs; Continuous beams; Critical speed; Differential equations; Dispersion curve analysis; Dispersion curve veering; Equations of motion; Euler-Bernoulli beams; Ground motion; Ground vibration; Harmonic analysis; Mathematical models; Mode superposition method; Moving load; Periodic structure; Periodic structures; Plates; Prediction models; Railway tracks; Shafts (machine elements); Slab ballastless track; Slabs; Steady state; Timoshenko beams; Unit cell; Vibration; Vibration analysis; Wavelengths; Window functions; Critical speed; Moving load; Periodic structure; Ground vibration; Dispersion curve veering; Slab ballastless track

•Track/ground system as periodic structure subject to moving harmonic load modelled;•Suitablity of replacing slabs and plates with two infinitely long beams examined;•Importance to ground vibration spectrum of track resonances demonstrated;•Critical speed of axle load moving along periodic track inv...