Dynamic behaviour of railway tracks on transitions zones

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Manuela
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Dynamic behaviour of railway tracks on transitions zones

Mensagem por Manuela » 05 Set 2016, 14:36

Autores: José N. Varandas a, Paul Hölscher , Manuel A.G. Silva.

a b s t r a c t
Transition zones between structures as bridges or box culverts frequently present higher degradation
rates compared to the remaining railway. This paper presents a numerical model for the dynamic loads
on the ballast caused by trains passing a transition. The model was validated with field data obtained
from an extensive field survey conducted in two transition zones in the Netherlands. Results show that
the forces on the ballast vary significantly both in time and space on a transition, especially with the
appearance of voids under the sleepers. Implications of the results on the long-term behaviour of transition
zones are presented.

Keywords:
Transition zones
Measurements
Non-linear
Ballast
Uneven track
Hanging sleepers.
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