Fatigue damage at the root of the gate lip of the water gate under variable water pressure due to tide and ocean wave

Keitaro Konuma, Masahiro Toyosada, Koji Gotoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The steel water gate, which received variable water pressure due to gap of water level between sea and balancing reservoir, damaged in its gate lip by fatigue crack. In order to find the cause of this damage, various investigate programs, including observation with microscope and measurement of stress and water level, were performed. By the comprehensive analysis of the results of these investigation programs, it was concluded that this damage was caused by the cyclic loading on the gate lip from the ground surface, and found out the relation between sea water level and stress occur at damaged point. After then, the damaged part was replaced with new reinforced element. In addition, for checking the effect of this measure, the crack growth estimation was executed with FLARP, the numerical simulation code which was developed by the authors. As the result of the numerical simulation, the crack growth curve became visible quantitatively, and it was confirmed that the possibility of the reoccurrence of the fatigue crack was removed by the measures which we took, under the assumed loading condition.

Original languageEnglish
Title of host publicationProceedings of 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006
Pages9P
DOIs
Publication statusPublished - Nov 29 2006
Event25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006 - Hamburg, Germany
Duration: Jun 4 2006Jun 9 2006

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume2006

Other

Other25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006
CountryGermany
CityHamburg
Period6/4/066/9/06

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All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Cite this

Konuma, K., Toyosada, M., & Gotoh, K. (2006). Fatigue damage at the root of the gate lip of the water gate under variable water pressure due to tide and ocean wave. In Proceedings of 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006 (pp. 9P). (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 2006). https://doi.org/10.1115/OMAE2006-92129