Abstract
Results from proof-load testing of 1202 bays of 51 reinforced and prestressed concrete bridges are statistically analysed in order to: (1) quantify the bias of standard theoretical deflection predictions, (2) compare the behaviour of bridges with different deck types, spans, and end-constraint conditions, (3) decompose the total variation of the elastic modulus into various terms (variation from construction company to construction company, from bridge to bridge, and from bay to bay), and (4) analyze the spatial dependence of the bay-to-bay variation term. The main modeling and statistical analysis issues are addressed here, whereas numerical results are discussed in a companion paper.
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