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STRUCTURE MAINTENANCE SUPPORT METHOD USING PERFORMANCE UPDATE MODEL, AND STRUCTURE MAINTENANCE SUPPORT APPARATUS USING PERFORMANCE UPDATE MODEL
STRUCTURE MAINTENANCE SUPPORT METHOD USING PERFORMANCE UPDATE MODEL, AND STRUCTURE MAINTENANCE SUPPORT APPARATUS USING PERFORMANCE UPDATE MODEL
PROBLEM TO BE SOLVED: To support a decision on a rational repair/update strategy saving long term maintenance costs of a structure while maintaining safety thereof, in maintenance repair/update of a structure such as a bridge constituted of a plurality of members having master-servant relationship in view of repair/update works.;SOLUTION: In many members constituting a structure, a plurality of members having the master-servant relationship in view of repair/update works are determined. For each member in the master-servant relationship, an aging degradation is determined at given inspection timing. The degradation which each degradation is expected to reach at the next inspection timing is expressed by a stochastic matrix. Various repair/update strategies are set in dependence on the degradation of each member at given inspection timing, including immediate repair/update of a degraded member and adjourned repair/update to the next inspection timing. For each repair/update strategy, a minimum value of life cycle costs of the structure is calculated according to the Bellman equation. A repair/update strategy is determined according to the life cycle costs.;COPYRIGHT: (C)2005,JPO&NCIPI
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