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Also, there are methods based on the finite element method (FEM). According to this approach, the layered structures are divided into a number of thin layers within which the displacement has prescribed variation expressions. In terms of the assumed displacement expressions, the governing equations are solved in a finite element sense (used by Yang and Huang [28], Ju [29], Mesgouez [30] et al.). Furthermore, the boundary element method, used by Lombaert [31], [32], and the coupled finite-boundary element method, used by Pan [33], Lombaert [34], and Francois [35] et al., have also been proposed to calculate the dynamic stresses and deformations of a layered elastic medium. In order to study the response of flexible pavement subjected to an FWD load, Ayadi and Picoux et al.[36] have recently developed two dynamic models by means of semi-analytical and FEM methods, respectively. Theses dynamic models take into account the effects of both Rayleigh damping in soil and viscous damping in bituminous on structural deflection, and theseA review of the literature shows that a dynamic analysis of a layered road structure can be conducted using analytical, analytical/numerical or purely numerical methods, and most of the available works on the subject, though there are not many, are rather theoretical and lack calibration on the basis of experimental measures. Thus, the results of these approaches are rather qualitative 更多：https://www.bmcx.com/ , and even though they help to understand the system behaviour, they cannot be used directly in the design. In fact, experimental measurements can increase our understanding of the phenomena intuitively and provide predictions that can be utilised to improve the design and maintenance and, hence, reduce costs. The objective of this work was to analyse the dynamic stresses and deformations of a layered road structure through experimental measurements and numerical calculations. A physical model that included all the road structure layers (pavement, base, subbase and layered subgrade) was used to conduct the experiments, and double-circular loads were made to simulate the tires. Also, different transducers were installed to measure the forces, elastic deformations and irreversible permanent deformations. Moreover, the transmission and reflection matrix method was used to solve the dynamic response of the layered road structure, and the numerical calculations of the stresses and elastic deformations were compared with the experimental results. Finally, the influences of the road structure layers’ properties, such as the elastic modulus and the thickness, on the response of road system were investigated. improvements are more conclusive than the output of a conventional linear elastic model. 2. Model experiment on a layered road structure under traffic loads 2.1. Introduction of the model experiment Fig. 1 shows the laboratory physical model experiment that represents the typical multi-layered road structure that was built to simulate the dynamic response of a road subjected to vehicle traffic loads. The model includes, from bottom to top, a layer of subgrade (completely decomposed granite) at a height of 1.05 m compacted into three layers with heights of 0.45 m, 0.3 m and 0.3 m, respectively, a layer of subbase at a height of 0.3 m composed of cement stabilised gravel at a 4% cement content, a layer of base at a height of 0.3 m composed of cement stabilised gravel with 6% cement content and an asphalt surface layer at a height of 0.18 m to simulate flexible pavement on which the loading equipment was placed with respect to the position of the loading plate. The structure layers were constrained at two opposite sides by inclined planes (slopes) that represented free edges. The other sides were constrained by vertical steel baffle plates representing the beginning and the end of the model. The loading equipment was fixed on a reaction beam, which was bolted onto the steel frame. All components of the experiment were located on a reinforced concrete foundation that was able to support the important weights of these components.