ON PREVENTIVE MAINTENANCE POLICY FOR WAVE DISSIPATING BLOCKS COVERING CAISSON BREAKWATER

Takao Ota; Hiroyuki Kawamura; Yoshiharu Matsumi; Junji Koyanagi; Takashi Satow

doi:10.9753/icce.v36.structures.72

No. 36 (2018), Coastal Structures

No. 36 (2018)

ON PREVENTIVE MAINTENANCE POLICY FOR WAVE DISSIPATING BLOCKS COVERING CAISSON BREAKWATER

Coastal Structures

https://doi.org/10.9753/icce.v36.structures.72

Published 2018-12-30

Takao Ota
Hiroyuki Kawamura
Yoshiharu Matsumi
Junji Koyanagi
Takashi Satow

Takao Ota

Hiroyuki Kawamura

Yoshiharu Matsumi

Junji Koyanagi

Takashi Satow

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Ota, T., Kawamura, H., Matsumi, Y., Koyanagi, J., & Satow, T. (2018). ON PREVENTIVE MAINTENANCE POLICY FOR WAVE DISSIPATING BLOCKS COVERING CAISSON BREAKWATER. Coastal Engineering Proceedings, 1(36), structures.72. https://doi.org/10.9753/icce.v36.structures.72

Abstract

The infrastructures are required to keep a certain level of performance during the duration of service. Because the performance of the infrastructures including harbor and coastal structures deteriorates due to aging and damage that is caused by the action of external forces, it is necessary to perform appropriate maintenance. Satow et al. (2009) proposed a mathematical model for the preventive maintenance of wave dissipating blocks based on the method of the reliability engineering. They also derived the expected maintenance cost over the in service period and the optimal preventive maintenance policy. In this study, the optimal threshold for preventive maintenance to minimize the expected maintenance cost is determined for the wave dissipating blocks covering caisson breakwater by using the above model.

https://doi.org/10.9753/icce.v36.structures.72

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References

Hanzawa, Sato, Takahashi, Shimosako, Takayama, Tanimoto (1996): New stability formula for wavedissipating concrete blocks covering horizontally composite breakwaters, Proc. of 25th ICCE, pp. 1665- 1678.

Miyata, Kumagai, Tsujio, Okubo (2009): A study on maintenance methods considering expected maintenance cost of caisson breakwaters covered with wave-dissipating concrete blocks, J. of Coast. Eng., JSCE, Vol.56, pp. 911-915. (in Japanese)

Satow, Matsumi, Sumi, Hirayama, Ota (2009): A preventive maintenance problem of armour blocks with an in-service period, J. of Coast. Eng., JSCE, Vol.56, pp. 951-955. (in Japanese)

Takayama, Tsujio, Yasuda (2006): Optimum design for concrete armor blocks under the minimum life cycle cost, Annual J. of Coast. Eng., JSCE, pp. 856-860. (in Japanese)

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ON PREVENTIVE MAINTENANCE POLICY FOR WAVE DISSIPATING BLOCKS COVERING CAISSON BREAKWATER

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