Obsolescence Risk Assessment of Infrastructure Stocks: A Case Study of Japan's Sewer Pipes
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- YAMASHITA Naho
- 名古屋大学大学院 環境学研究科 都市環境学専攻
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- MATSUSHIRO Tatsuki
- 鹿島建設株式会社 北陸支店 土木部
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- HIRUTA Yuki
- 名古屋大学 未来社会創造機構 脱炭素社会創造センター
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- SHIRAKAWA Hiroaki
- 名古屋大学大学院 環境学研究科 都市環境学専攻
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- TANIKAWA Hiroki
- 名古屋大学大学院 環境学研究科 都市環境学専攻
Bibliographic Information
- Other Title
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- 下水道管渠を対象とした社会資本ストックの退蔵化リスク評価
Abstract
<p>The aging of urban structures such as buildings and infrastructures has been getting serious in these years. Those material stocks should be appropriately maintained for a long period of time, however, budget constraints and labor shortage due to population decline seem to make the situation more difficult. This study aims to estimate the amount of Japan's sewer pipe stock and compare the obsolescence risk with combinations of soundness of the existing stock and population forecast among prefectures. As results, the amount of sewer pipe stock was estimated to be 115 million t in 2018, and the rates of aged stock requiring urgent maintenance were 29% for concrete pipes and 13% for PVC pipes, respectively. Obsolescence risk was high in Hokkaido, Nara, Yamaguchi, Miyazaki and Kagoshima, indicating that those especially need deliberate countermeasures for a long-term stock management.</p>
Journal
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- Papers on Environmental Information Science
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Papers on Environmental Information Science ceis37 (0), 70-77, 2023-12-08
Center for Environmental Information Science
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Details 詳細情報について
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- CRID
- 1390016913909441152
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed