STRUCTURE DETERIORATION CURVE COMPUTING SYSTEM AND LIFE CYCLE COST EVALUATION METHOD

PROBLEM TO BE SOLVED: To provide a structure deterioration curve computing system which can perform a deterioration prediction as a part of the asset management of a structure such as a bridge. SOLUTION: This structure deterioration curve computing system 1 for use in the asset management of the structure such as the bridge comprises: an input means 10 for inputting inspection data on the deterioration condition of the structure; a computing means 20 for computing a deterioration curve which indicates the degree of a deterioration for the number of elapsed years from the input inspection data; and a display means 30 for displaying the input inspection data and the deterioration curve. The computing means 20 is equipped with a number-of-elapsed-years classifying section 23 which extracts the inspection data for each prescribed number-of-elapsed-years section, an average-degree-of-deterioration computing section 24 which computes the average of the degrees of the deterioration, which are classified for each of the number-of-elapsed-years sections, and a deterioration-curve computing portion 25 for computing the deterioration curve from the average degree of the deterioration, which is computed for each of the number-of-elapsed-years sections, by a least-square method. COPYRIGHT: (C)2009,JPO&INPIT