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- W2170578586 abstract "The Confederation Bridge connecting Prince Edward Island to the province of New Brunswick in Canada is currently monitored to study the deflections, the ice forces and the thermal and dynamic behaviour. This paper compares the monitored immediate and long-term deflections with analytical values. The research shows that deflections of concrete bridges built and prestressed in multi-stages can be predicted with reasonable accuracy by an analysis which accounts for creep and shrinkage of concrete and relaxation of prestressing steel and the variation of modulus of elasticity of concrete with ageing. The procedure of analysis is briefly reviewed. The material parameters required for the analysis are the elastic modulus, the creep coefficient and the free shrinkage of concrete and the relaxation of prestressing steel. Measured values of these parameters on samples taken from the materials used in construction of the Confederation Bridge are compared with values predicted by equations given by the CEB-FIP Model Code 1990 and by the ACI Committee 209. The analysis results for deflections agree better with monitored values when using measured properties of the actual materials used in construction, as opposed to the use of parameters recommended by codes." @default.
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- W2170578586 date "2001-03-01" @default.
- W2170578586 modified "2023-09-26" @default.
- W2170578586 title "Deflection prediction for concrete bridges: analysis and field measurements on a long-span bridge" @default.
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- W2170578586 doi "https://doi.org/10.1680/stco.2001.2.1.1" @default.
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