Abstract
Some concrete bridges continue to deform even after the life normally attributed to creep. The causes and consequences of this are discussed and a possible method of calculation is proposed. The effect of the level of prestressing on the development of cracks and deflections is also mentioned. In an effort to measure these deformations and to create a possible early warning system, a hydrostatic levelling system was developed. Details of this system and actual results obtained from an excessively deformed and now repaired bridge are presented.
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References
Draft Model Code CEB 1990, Comité Euro-internatinal du Béton, CEB CH-1015, Lausanne, Switzerland.
Favre, R. (reporter), Beeby, A.W., Falkner, H., Kopma, M., Schiessl, R, and Jaccoud, J.R (1985) CEB Design Manual on Cracking and Deformations, Ecole Polytechnique Fédérale de Lausanne, Switzerland.
Ghali, A.,and Favre, R. (1986) Concrete structures: Stresses and deformations, Chapman and Hall Ltd., New York and London.
Markey, I. (1989) Hydrostatic levelling system for the measurement of bridge deformation, Publication IBAP No. 134, Nov., Ecole Polytechnique Fédérale de Lausanne, Switzerland.
Suter, R. (1989) Long term observation of concrete structures, Proc. Sym. RILEM, Lyons.
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© 1990 Kluwer Academic Publishers
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Favre, R., Markey, I. (1990). Long-Term Monitoring of Bridge Deformation. In: Nowak, A.S. (eds) Bridge Evaluation, Repair and Rehabilitation. NATO ASI Series, vol 187. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2153-5_7
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DOI: https://doi.org/10.1007/978-94-009-2153-5_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7469-8
Online ISBN: 978-94-009-2153-5
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