Development of integrated asset management technique of road infrastructure based on risk evaluation

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  • リスク評価に基づいた道路施設の総合維持管理手法の開発
  • リスク ヒョウカ ニ モトズイタ ドウロ シセツ ノ ソウゴウ イジ カンリ シュホウ ノ カイハツ

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Abstract

 Because of the aging of road facilities and limited budget for the maintenance of them, many local gov ernments in Japan are establishing a maintenance management plan in order for the preventive maintenance. However, such plans mainly focus on each road facility individually. The road network however functions by connecting with other facilities and the maintenance of road facilities should be planned by considering these network effects.<br> Based on above background, this study attempts to d evelop an integrated asset management technique for road facilities by simultaneously dealing with pavements, bridges and dangerous slopes. The method to evaluate the imp ortance and necessity of individual road facility by the risk management technique is first developed, and all roa d facilities are unitarily compared based on this method. We further established the method to reduce the risk efficiently by ide ntifying the section which may reduce the total risk of road network by the maintenance. The proposed method is verified by applying to 4 routes in Gifu Prefecture. The result clearly shows that the rationality of the method reducing the risk the whole road network.

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