Estudo de dormentes de aço sob solicitações verticais, longitudinais e transversais em via permanente ferroviária

This article presents the results of research conducted on full-scale models, studying the behavior of steel sleepers under the action of static loads, in vertical, longitudinal and transverse directions. For the research models were run with rails TR-68, fixed with elastic system on seven sleepers each type, separately, embedded in standard ballast with 35 cm height and on the basis of compacted soil with 30 cm thick. For the load tests were constructed using reaction systems of vertical and horizontal forces with the objective of applying the requests. The system of readings and data acquisition was fully computerized, obtaining in real time the values of forces and displacements. The results were compared with those installed in the same way with sleepers of wood, mono-block and bi-block prestressed concrete. The analyzed results provided unprecedented parameters in Brazil and of great importance for the design of modern railway permanent way, using steel sleepers.

Aboutness em Análise Documental de textos literários infanto-juvenis: perspectivas para o aprimoramento da representação de conteúdo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise de oportunidades de poligeração em edificações e cidades

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)