Abstract
To mitigate the differential settlement of the soft soil foundation and to reduce the maintenance work of the embedded tram track, an innovative pile-plank-supported tram track configuration is proposed and utilized in Shanghai Tram Line T1/T2. Since this is the first application of this new structure in tram track projects, the dynamic properties and service performance of this structure are still not clear. In this work, an in-situ test on the dynamic performance of the pile-plank-supported ballastless tram track is carried out. The contact forces between the independently rotating wheelset of a five-module 100% low-floor tram and the channel rail of tram track are measured and investigated as well as the vertical acceleration of the plank. The measured wheel-rail contact forces are employed as a loading condition for a track-subgrade coupling model. The influence of multi-factors (i.e. dynamic loading, thermal conditions and subgrade settlement) on the tram track damage is investigated. The results indicate that the long-term service performance of the pile-plank-supported tram track is stable under the dynamic tram loads.
Published Version
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