Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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FULL-SCALE FATIGUE TESTS OF PRECAST REINFORCED CONCRETE SLABS FOR RAILWAY TRACKS

M. Tarifa  X.X. Zhang  G. Ruiz  E. Poveda     

Anales de la Mecánica de la Fractura, nº 31 . 2014 . Pág. 565 -570
Ver (.pdf): Anales31-089

Resumen: This paper describes the experimental part of a research project on the fatigue behaviour of precast reinforced concreteslabs for high-speed railway slab track systems, based on the Japanese Shinkansen system. First, characterization tests on the materials and the fastening system were performed. Second, a three-point bend fatigue test on the full-scale of the slab track was conducted. The slabs were placed on two rubber supports, the cyclic sine wave load was applied on its middle section through two rails. The loading frequency was 1.5 Hz, the maximum and the minimum load were 220 kN and 22 kN respectively. The number of cycles was set 106. Third, the loss of stiffness of the slab was presented before and after the fatigue tests. Furthermore, the damage (cracks) was marked in the slab to show the failure pattern. The testing procedure leads to slabs mechanical deterioration with only 106 fatigue cycles, while reproducing the actual loads would lead to longer and more expensive tests. The results allow us to check the slab design sturdiness and could be employed to validate numerical models with fatigue failure criteria.

LocalizaciónEl Escorial

E.T.S.I. Caminos, C. y P., Universidad de Castilla-La Mancha. Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain.
E.T.S.I. Caminos, C. y P., Universidad de Castilla-La Mancha. Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain.
E.T.S.I. Caminos, C. y P., Universidad de Castilla-La Mancha. Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain.
E.T.S.I. Caminos, C. y P., Universidad de Castilla-La Mancha. Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain.



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