Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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FATIGUE BEHAVIOUR OF RESIN-INJECTED BOLTS: AN EXPERIMENTAL APPROACH

A.M.P. de Jesus  J.F.N. da Silva  M.V. Figueiredo  A.S. Ribeiro  A.A. Fernandes  J.A.F.O. Correia  A.L.L. da Silva  J.M.C. Maeiro

Anales de la Mecánica de la Fractura, nº 27 . 2010 . Pág. -
Ver (.pdf): 51

Resumen: Resin-injected bolts have been used in reparation of existing bridges. This technology is used in shear connections as an alternative to rivets, fitted bolts or preloaded high strength friction grip bolts. The use of resign-injected bolts allows similar behaviour as fitted bolts, but with lower costs, since it only requires a standard preparation of the holes. The use of resin injected bolts improves the slip resistance of the joint. In rehabilitation of old riveted bridges, resin-injected bolts may be used to replace faulty rivets, preserving null sleep, as the original rivet. However, creep may occur if bearing stresses on resin are excessive. The performance of resin-injected bolts has been essentially demonstrated by quasi-static or creep tests. Very few studies concerning the assessment of the fatigue behaviour of resin-injected bolts can be found in literature. This paper presents the results of an experimental program aiming the evaluation of the fatigue behaviour of two types of joints (single and double shear) with preloaded resin-injected bolts. Results are compared with test data obtained with standard preloaded bolts, revealing a systematic fatigue strength reduction.

LocalizaciónPorto

Departamento de Engenharias, Escola de Ciências e Tecnologia, Universidade de Tras-os-Montes e Alto Douro, Quinta de Prados, 5001-801 Vila Real, Portugal.
Departamento de Engenharias, Escola de Ciências e Tecnologia, Universidade de Tras-os-Montes e Alto Douro, Quinta de Prados, 5001-801 Vila Real, Portugal.

Departamento de Engenharias, Escola de Ciências e Tecnologia, Universidade de Tras-os-Montes e Alto Douro, Quinta de Prados, 5001-801 Vila Real, Portugal.

Departamento de Engenharias, Escola de Ciências e Tecnologia, Universidade de Tras-os-Montes e Alto Douro
Departamento de Engenharias, Escola de Ciências e Tecnologia, Universidade de Tras-os-Montes e Alto Douro
Departamento de Engenharias, Escola de Ciências e Tecnologia, Universidade de Tras-os-Montes e Alto Douro

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