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Journal of Civil Engineering and Architecture 2013年第8期7卷 964-972页

作者： Cassio Eduardo Lima de Paiva Jose Lulz Antunes de Oliveira e Sousa Luiz Carlos de Almeida Paulo RobertoAguiar Luiz Femando de Melo Correia Juliana Silva Watanabe Rodrigo Moreira de Carvalho Creso deFranco Peixoto Denis Palomo Paschoalin Geotecnical and Ttransportation Department & Department of Structure School of Civil Engineering University of CampinasCampinas 13083-852 Brazil Ignatian Educational Foundation S6o Bernardo do Campo 09850-901 Brazil 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.

关键词： Railway track field strain survey rail stresses.

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Evaluation between Two Brazilian Railway Tracks

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Journal of Civil Engineering and Architecture 2011年第9期5卷 772-778页

作者： Cassio Eduardo Lima de Paiva Creso de Franco Peixoto Luiz Femando de Melo Correia Paulo RobertoAguiar Geotechnical and Transportation Department UNICAMP State University of Campinas Brazil Erelys Consulting and Assessment Ltd. Brazil

Most of Brazilian railways were built more than 100 years ago. Some of them were submitted to rebuilding processes while others were just overloaded by additional layers of ballast. Nowadays, Brazil is going through a new railway transport impulse in relation to the increase of load, despite of the necessary supply capacity. For this reason, there were developed evaluations from some Brazilian railways in order to determine their operational conditions. This work shows a comparative analysis of results from two parts of studied old railway, aiming to determine minimum features to enable them to accept higher load axis. One of these studied old railway parts did not have a sub-ballast layer in contrast to the other one. The strains and stresses of these old railway track parts were generated by the same locomotive.

关键词： Railway track field strain survey track deflection basin.

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