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Railway ballast load analysis using small-scale cylindrical triaxial test (2014)

• Authors:
  • Merheb, Antônio Hamilton Michel
  • Motta, Rosangela dos Santos
  • Bernucci, Liedi Légi Bariani
  • Moura, Edson de
  • Costa, Robson Correia da
  • Bessa, Iuri Sidney
  • Vieira, Tiago
  • Ribeiro, Fernando Sgavioli
• USP affiliated authors: MOTTA, ROSÂNGELA DOS SANTOS - EP ; BERNUCCI, LIEDI LÉGI BARIANI - EP ; MOURA, EDSON DE - EP ; MERHEB, ANTONIO HAMILTON MICHEL - EP ; COSTA, ROBSON CORREIA DA - EP ; BESSA, IURI SIDNEY - EP ; VIEIRA, TIAGO - EP ; RIBEIRO, FERNANDO SGAVIOLI - EP
• Unidade: EP
• DOI: 10.4203/ccp.104.131
• Subjects: LASTRO; FERROVIAS; ESTRUTURA DOS MATERIAIS
• Language: Francês
• Abstract: This paper presents results of triaxial testing performed on a ballast material regarding its permanent deformation and degradation behaviour during cyclic loading. The tests simulated a large number of passing train wheels. Materials used in ballast layers are usually comprised of a highly coarse-graded gradation, hence the implementation of large-scale laboratory tests is difficult to conduct due to the corresponding large-scale triaxial specimens for railroad ballast material. The main purpose of this paper was to evaluate the applicability of the parallel gradation technique in triaxial tests, using small-scale cylindrical equipment with 150mm (width) x 300mm (height), in which it is easier to manipulate small fractions, as well as to assess the influence of two different gradations on ballast breakage and permanent vertical deformation. It was found that granular materials reveal a strong tendency to settle under higher stress levels, causing a significant increase of their strength and stiffness. The AREMA No. 24 gradation was found to be the most resistant to ballast settlement. Results of this study confirm that the confining pressure should be considered as an important track design parameter. The results contribute to a better understand of the mechanical behaviour of ballast layers, thus support ongoing researches on railroad structure
• Imprenta:
  • Publisher: Civil-Comp Press
  • Publisher place: Stirlingshire
  • Date published: 2014
• Source:
  • Título do periódico: Proceedings
• Conference titles: International Conference on Railway Technology: Research, Development and Maintenance

Informações sobre o DOI: 10.4203/ccp.104.131 (Fonte: oaDOI API)
• Este periódico é de assinatura
• Este artigo NÃO é de acesso aberto
  
• Cor do Acesso Aberto: closed

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• ABNT

  MERHEB, Antônio Hamilton Michel et al. Railway ballast load analysis using small-scale cylindrical triaxial test. 2014, Anais.. Stirlingshire: Civil-Comp Press, 2014. Disponível em: https://doi.org/10.4203/ccp.104.131. Acesso em: 20 abr. 2024.

• APA

  Merheb, A. H. M., Motta, R. dos S., Bernucci, L. L. B., Moura, E. de, Costa, R. C. da, Bessa, I. S., et al. (2014). Railway ballast load analysis using small-scale cylindrical triaxial test. In Proceedings. Stirlingshire: Civil-Comp Press. doi:10.4203/ccp.104.131

• NLM

  Merheb AHM, Motta R dos S, Bernucci LLB, Moura E de, Costa RC da, Bessa IS, Vieira T, Ribeiro FS. Railway ballast load analysis using small-scale cylindrical triaxial test [Internet]. Proceedings. 2014 ;[citado 2024 abr. 20 ] Available from: https://doi.org/10.4203/ccp.104.131

• Vancouver

  Merheb AHM, Motta R dos S, Bernucci LLB, Moura E de, Costa RC da, Bessa IS, Vieira T, Ribeiro FS. Railway ballast load analysis using small-scale cylindrical triaxial test [Internet]. Proceedings. 2014 ;[citado 2024 abr. 20 ] Available from: https://doi.org/10.4203/ccp.104.131

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