RT Journal Article
T1 A geometric‐identification–free mathematical model for recreating nonsymmetric horizontal railway alignments
A1 Vázquez Méndez, Miguel Ernesto
A1 Casal Urcera, Gerardo
A1 Castro Ponte, Alberte
A1 Santamarina Ríos, Duarte
AB The constant passage of trains on the railways tracks causes, in the course of time, deviations that must be corrected periodically by means of a track calibration process. It consists of designing a new layout, called recreated horizontal alignment (RHA), as close as possible to the deformed center track fulfilling also the technical constraints according to the operational requirements of the railway. In recent years, different models have been proposed to address this task. This paper proposes, first, a new geometrical model that works with continuous variables for the definition of horizontal alignments (HAs) to deal with nonsymmetric transition curves at both sides of a circular curve and second, an optimization algorithm to compute the recreated alignment suitable in sinuous railway sections. This new mathematical model frees the optimization process from the need to previously identify the geometric elements (tangents, circular curves, and transition curves) of the HA. The usefulness of this model is tested with two academic examples showing its good behavior and in a real case study, where this algorithm is compared with the solution adopted by the engineers in a section of the railway line Ourense–Monforte in the NW of Spain.
PB Wiley
SN 1093-9687
YR 2024
FD 2024
LK http://hdl.handle.net/10347/34764
UL http://hdl.handle.net/10347/34764
LA eng
NO Vázquez-Méndez, M. E., Casal, G., Castro, A., & Santamarina, D. (2024). A geometric-identification–free mathematical model for recreating nonsymmetric horizontal railway alignments. Computer-Aided Civil and Infrastructure Engineering, 1–18. https://doi.org/10.1111/mice.13230
NO This work was funded from the project TED2021-129324B-I00 of the Ministerio de Ciencia e Innovación (Spain) and NextGenerationEU (European Union), and also by the Collaboration Agreement between Consellería de Educación, Formación Profesional e Universidades (Xunta de Galicia, Spain) and Universidade de Santiago de Compostela (Spain), which regulates the Specialization Campus Campus Terra under Grant Number 2022-PU014. Finally, the third author thanks the support given by Xunta de Galicia (Spain) by means of the research project 2023 GPC GI-2084-ED431B2023/17 and the fourth author has received financial support from the Xunta de Galicia 2021 GRC GI-1563-ED431C2021/15.
DS Minerva
RD 25 abr 2026