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THERMAL BUCKLING ON CURVED AND TANGENT RAILWAYS: PARAMETRIC STUDY

Piloto, Paulo A. G. / Minhoto, Manuel J. C. / Rossetto, Diego R. / Nava, Eduardo

This study investigates the thermal buckling in railway infrastructures, which can cause derailments and safety risks. The research analyses the influence of various parameters on thermal buckling, focusing on misalignment and ballast resistance. Using a finite element model, curved and tangent tracks are simulated, considering rail sections, sleeper materials, fastener stiffness and initial imperfections. Results demonstrate that ballast resistance is the most critical factor, with compacted ballast increasing buckling temperatures by up to 127%. Additionally, rail imperfections significantly impact temperature increases. A new design guide is proposed for operating conditions under different conditions.

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THERMAL BUCKLING ON CURVED AND TANGENT RAILWAYS: PARAMETRIC STUDY

Piloto, Paulo A. G. / Minhoto, Manuel J. C. / Rossetto, Diego R. / Nava, Eduardo

This study investigates the thermal buckling in railway infrastructures, which can cause derailments and safety risks. The research analyses the influence of various parameters on thermal buckling, focusing on misalignment and ballast resistance. Using a finite element model, curved and tangent tracks are simulated, considering rail sections, sleeper materials, fastener stiffness and initial imperfections. Results demonstrate that ballast resistance is the most critical factor, with compacted ballast increasing buckling temperatures by up to 127%. Additionally, rail imperfections significantly impact temperature increases. A new design guide is proposed for operating conditions under different conditions.

THERMAL BUCKLING ON CURVED AND TANGENT RAILWAYS: PARAMETRIC STUDY

Piloto, Paulo A. G. / Minhoto, Manuel J. C. / Rossetto, Diego R. / Nava, Eduardo

This study investigates the thermal buckling in railway infrastructures, which can cause derailments and safety risks. The research analyses the influence of various parameters on thermal buckling, focusing on misalignment and ballast resistance. Using a finite element model, curved and tangent tracks are simulated, considering rail sections, sleeper materials, fastener stiffness and initial imperfections. Results demonstrate that ballast resistance is the most critical factor, with compacted ballast increasing buckling temperatures by up to 127%. Additionally, rail imperfections significantly impact temperature increases. A new design guide is proposed for operating conditions under different conditions.

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Title:

THERMAL BUCKLING ON CURVED AND TANGENT RAILWAYS: PARAMETRIC STUDY

Contributors:

Piloto, Paulo A. G. (author) / Minhoto, Manuel J. C. (author) / Rossetto, Diego R. (author) / Nava, Eduardo (author)

Published in:

ce/papers ; 7 ; 321-330

Publication date:

2024-03-01

Size:

10 pages

ISSN:

DOI:

https://doi.org/10.1002/cepa.3049

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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