Abstract
Taking into account that the embedded track structure not only bears the load from tram, but also suffers from road traffic, this paper aims to establish the finite element analysis model of embedded track structure in the mixed traffic area with ABAQUS software, calculates the deformation and stress of asphalt surface course and filling material. Also, the paper puts forward the way to improve the structural stability of embedded track.
Highlights
As we all know, the embedded track of modern trams is a new type of vibration-damping and noise-reducing track structure[1], the connection between the rail and the track bed is different from the discrete fastening system in the traditional track structure
As for the embedded track structure without fastening system, the selection of elastic modulus of filling material is crucial for the design of track structure, because the rail is mainly fixed by the filling material[5]
The influence of elastic modulus change of filling material on tensile stress and compressive stress of asphalt layer are shown in figure 4 and figure 5, and the influence on its own tensile stress and compressive stress are shown in figure 6 and figure 7
Summary
The embedded track of modern trams is a new type of vibration-damping and noise-reducing track structure[1], the connection between the rail and the track bed is different from the discrete fastening system in the traditional track structure. In detail, it is to set a groove in the asphalt pavement, the rail is placed in the groove, and the polymer filling material is laid under the rail head to fix the rail[2]. We put forward an optimum range of elastic modulus to improving the stability of embedded rail track
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