### Solution and analysis of dynamic response for layered transversely isotropic structure of concrete pavement

WU Hongbin1, YANG Linqing2, ZHANG Yu1

1. 1. Aerial Port Administrative AgencyHenan Toll Repayment Highway Management CenterZhengzhou 450019China
2. School of Civil EngineeringSun Yat-sen University. Guangdong ProvinceZhuhai 519082China
• Received:2019-09-12 Online:2020-07-25 Published:2020-07-25

Abstract: Considering that concrete pavement structure has certain transverse isotropy property due to its formation process and other reasons, in this paper, the dynamic stiffness matrix of deflection basin in frequency domain is obtained by using Fourier integral equation transformation method, and then the dynamic response of deflection basin in time domain under dynamic load of Falling Weight Deflectometer is obtained by using mixed variable algorithm. The algorithm can be expressed analytically in horizontal direction, and precision in computer sense can be achieved by precise integration algorithm in vertical direction. Numerical examples verify the accuracy of the proposed algorithm. On this basis, extensive parametric analysis is carried out for bottom boundary condition of the pavement structure and the transversely isotropic property, so as to provide reliable  analysis for engineering practice.

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