Optimal Allocation of Resources in Repair and Maintenance of Bridge Structuresby Giuliano Augusti, Univ di Roma La Sapienza, Italy,
Antonio Borri, Univ di Roma La Sapienza, Italy,
Marcello Ciampoli, Univ di Roma La Sapienza, Italy,
Abstract: The structural design process, examined in its entirety (and taking into account the uncertainty and randomness that characterize the governing parameters) is a decisional process, involving a succession of choices under certainty. In this paper analogous concepts are discussed in view of application of maintenance, repair and upgrading of highway systems, and in particular of bridge structures located along their path. The basic conceptual difference between the two fields of application is that in the case of buildings the initial vulnerability and the benefit deriving from an intervention on any element of the ensemble can be considered independent of each other, while the critical elements of a lifeline must be considered independent from each other, while the critical elements of a lifeline must be considered as part of a system, whose overall reliability yields the objective function of the optimal intervention strategy.
Subject Headings: Rehabilitation | Maintenance | Highway bridges | Lifeline systems | System reliability | Resource management | Bridge tests
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