Professor Mitsuyasu Iwanami of the Faculty of Environment and Social Sciences, Tokyo Institute of Technology, Mitsubishi Electric, and Kagoshima University have developed assistive technologies that make it easy to create long-term maintenance plans for civil engineering infrastructure.Civil engineering infrastructure such as bridges built during the period of high economic miracle is about to be renewed, and it is likely to attract the attention of local governments because it requires preventive maintenance to repair it before it breaks.
According to Tokyo Institute of Technology, the new technology was developed with the cooperation of Satsumasendai City, Kagoshima Prefecture.The research group analyzes the data and inspection results of 538 bridges managed by Satsumasendai City, and predicts the progress rate of deterioration from damage such as cracks, peeling, and exposed reinforcing bars, which greatly affect the deterioration of concrete bridges. We devised a "deterioration progress model".Utilizing this, we are trying to find infrastructure that is likely to deteriorate at an early stage and to find out the optimal repair time.
Furthermore, we have developed a "repair cost model" that calculates the repair cost according to the type and degree of damage, made it possible to estimate the repair cost according to the progress of deterioration, and visualized the cost and effect required for preventive maintenance.
By indexing various maintenance goals, it is possible to create a large number of maintenance plans that take the goals into consideration, and it is also possible to create plans that take into consideration the goals that should be prioritized.
Long-term maintenance plans are required for preventive maintenance of infrastructure, but the number of infrastructures to be managed is enormous, and it is difficult to create a plan that accurately reflects the intentions of the manager.
