To investigate the influences of through-transverse mortar disengagement with different lengths and heights on dynamic responses vehicle track systems under high frequency train loads, a coupled rigid vehicle–flexible multi-body dynamics (MBD) model was established in SIMPACK platforms help ANSYS software. The results indicate that when length is no more than 1 m, are hardly influenced by an in...

The internal temperature variation of ballastless track is very complicated under the effect a sunlit environment, and there are serious transverse vertical gradients, which will cause cracking deformation structure. In this paper, an ANSYS analysis model for track, considering box girder structure, established based on environmental information bridge characteristics structural system. conside...

In view of the problems present in construction process embedded track structure modern tram, we have designed a Novel Fastener Type Ballastless Track (NFTBT) for tram. To optimize size NFTBT’s structure, finite element model tram running stage is built, mechanical characteristics are calculated, and geometric parameters systematically studied. The research results as follows: (1) As slab incre...

Fiber Bragg grating (FBG) technology has significant advantages in anti-electromagnetic interference and is suitable for structural health monitoring (SHM) high-speed rail (HSR). In this paper, a deformation system based on FBG designed HSR track slab. Regarding to the possible large of slab, Bayesian change point detection (CPD) method adopted detect points data sequence posterior probability ...

Railway track transition zones are areas where there is a sudden change in the track-ground structure. They include changes between ballasted and slab track, bridge approaches, tunnel entry/exits. often location of rapid deterioration, therefore this paper investigates use auxiliary rails soil improvement to minimise train-track-ground dynamic effects. To do so, 3D finite element model develope...