›› 2009, Vol. 30 ›› Issue (2): 367-373.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Dynamic response of pavement resting on viscoelastic foundation under multiple moving loads

YAO Hai-lin1, LU Zheng1, LIU Gan-bin2, LUO Xing-wen1   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Faculty of Civil, Construction and Environment Engineering, Ningbo University, Ningbo 315211, China
  • Received:2008-05-26 Online:2009-02-10 Published:2011-01-27

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Abstract:

The dynamic displacement response of continuously reinforced concrete pavement (CRCP) resting on viscoelastic Winkler foundation has been investigated when the system is subjected to multiple rectangular moving loads. The pavement is treated as an orthotropic plate and infinite in the moving direction. The theoretical solutions of the vertical displacement of CRCP under single moving load are obtained by using the trigonometric series and Fourier transform, and the superposition method is used to obtain the analytical solutions of CRCP under tandem-axle, dual-wheel and four-wheel loads in the transformed field domains of moving space. By employing fast fourier transform (FFT), the numerical results are derived and used to analyze the influence of the load velocity, frequency, viscous damping, reinforced ratio and the distance and phase between the multiple loads on the maximum deflection and on the deflection distributions.

Key words: viscoelastic foundation, multiple loads, Fourier transform, tandem-axle loads, dual-wheel loads

CLC Number: 

  • TU 435
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