| Project/Area Number |
11650480
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
構造工学・地震工学
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| Research Institution | Kanazawa University |
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Principal Investigator |
MIYAJIMA Masakatsu Kanazawa Univ., Dept. of Civil Engineering, Professor, 工学部, 教授 (70143881)
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| Co-Investigator(Kenkyū-buntansha) |
MURATA Akira Kanazawa Univ., Dept. of Civil Engineering, Research Associate, 工学部, 助手 (30283097)
IKEMOTO Toshikazu Kanazawa Univ., Dept. of Civil Engineering, Research Associate, 工学部, 助手 (60311677)
KITAURA Masaru Kanazawa Univ., Dept. of Civil Engineering, Professor, 工学部, 教授 (70026269)
YOSHIDA Masaho Fukui National College of Technology, Dept. of Civil Engineering, Assistant Professor, 講師 (90210723)
FUCHIDA Kunihiko Yatsushiro National College of Technology, Dept. of Civil Engineering, Associate Professor, 助教授 (80124155)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2000: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Keywords | Lifeline / Performance Based Design / Water Supply System / Earthquake design |
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| Research Abstract |
This study deals with a system performance of water supply system after an earthquake and prioritization of the retrofit. After the 1995 Hyogoken Nambu (Kobe) earthquake, the water supply system of Kobe City was completely disrupted and its principal functions were lost. It took about three months for complete recovery of water supply. Since it is not realistic that the earthquake damages were perfectly prevented against very rare but great earthquake like the 1995 Kobe earthquake, performance based design should be introduced into the lifeline system. Moreover, the retrofit prioritization is required in the system strengthening From the point of system performance because of the enormous piping length.
First, a flow analysis of water supply pipelines was conducted in order to estimate under water supply points of a network after a scenario earthquake. The water supply pipeline network of Kanazawa City in Japan was adopted as a case study in this study. An effect of suspension and under supply of water on a civil society after an earthquake was estimated from the point of system performance. Based on the data in the 1995 Kobe earthquake, the relation between the day after the event and main purpose of water was shown and the minimum objective of water supply volume was given. Then a loss for water shortage was defined to evaluate the degree of effects of water shortage on a civic life. A loss of water shortage, which was a difference between supplied water volume and the minimum objective was evaluated by the value of money. The strengthening of water supply pipelines was studied to reduce the loss for water shortage due to the suspension and under supply of water after an earthquake. The results revealed that the total loss for water shortage seems to be one of the indices for evaluation of retrofit prioritization.
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