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Stresses Analysis on a Rail Part



Author(s)

Cassio Eduardo Lima de Paiva1, José Luíz Antunes de Oliveira e Sousa1, Luiz Carlos de Almeida1, Paulo Roberto Aguiar1, Luiz Fernando de Melo Correia1, Juliana Silva Watanabe1, Rodrigo Moreira de Carvalho1, Creso de Franco Peixoto1, 2 and Denis Palomo Paschoalin3

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DOI:10.17265/1934-7359/2013.08.007

1. Geotecnical and Ttransportation Department & Department of Structure, School of Civil Engineering, University of Campinas, Campinas 13083-852, Brazil
2. Ignatian Educational Foundation, São Bernardo do Campo 09850-901, Brazil
3. VALE S. A., Belo Horizonte 30140-001, Brazil

The EFVM (Vitoria Minas Railroad) is one of the main railways in Brazil. It transports freight trains of ore, 220 wagons each. These wagons have 2 boogies of 2 axles each and 32 metric tons on metre gauge. Elastic strains were measured on a special part of this railway due to these trains. The main load to evaluate stresses and strains was a G 16 Locomotive, a C-C kind from Vale, a Brazilian Company. The measurements were obtained by dynamic deflectometer installed on a main line of this railway, near Ipatinga, a city from Minas Gerais, one of Brazil states. This track was equipped to obtain stresses under an equal repeated static load. A simulation of the stresses was made under critical strain by Ferrovia 1.0 software. It was also made an evaluation of unequal results from neighbor sleepers taking in comparison two equipped parts of this railway, one with compacted ballast and no compaction to the other. The results were strain limited, avoiding breakage or damage to the studied rails. This work analyses these measurements focusing on the improvement of track quality.

Railway track, field strain survey, rail stresses.