ESTIMATION OF TSUNAMI FORCE ACTING ON THE BLOCK ARMORED BREAKWATER DUE TO SOLITON FISSION

  • Sohei Maruyama Fudo Tetra Corporation, 2-7, Higashi Nakanuki, Tsuchiura, Ibaraki, 300-0006, Japan
  • Tomotsuka Takayama Coastal Development Institute of Technology, 1-14-2, Nishi Shinbashi, Minato, Tokyo, 105-0003, Japan
  • Kenichiro Shimosako Port and Airport Research Institute, 3-1-1, Nagase, Yokosuka, Kanagawa, 239-0826, Japan
  • Akihiko Yahiro Coastal Development Institute of Technology, 1-14-2, Nishi Shinbashi, Minato, Tokyo, 105-0003, Japan
  • Kojiro Suzuki Port and Airport Research Institute, 3-1-1, Nagase, Yokosuka, Kanagawa, 239-0826, Japan
  • Toru Aota Fudo Tetra Corporation, 2-7, Higashi Nakanuki, Tsuchiura, Ibaraki, 300-0006, Japan
  • Masashi Tanaka Coastal Development Institute of Technology, 1-14-2, Nishi Shinbashi, Minato, Tokyo, 105-0003, Japan
  • Akira Matsumoto Fudo Tetra Corporation, 2-7, Higashi Nakanuki, Tsuchiura, Ibaraki, 300-0006, Japan
  • Minoru Hanzawa Fudo Tetra Corporation, 2-7, Higashi Nakanuki, Tsuchiura, Ibaraki, 300-0006, Japan
Keywords: tsunami, soliton fission, wave force, wave-dissipating works

Abstract

A series of hydraulic model experiments were performed to verify the effect of armoring concrete blocks on tsunami pressure reduction in a state of soliton fission. Applicable ranges for the Tanimoto and modified Tanimoto formulas for wave pressures acting on a caisson have been determined in terms of the ratio of tsunami height to water depth. An estimation formula for the tsunami pressure reduction factor of the armoring blocks was proposed as a result of a comparison of tsunami force between the states without and with the armoring blocks. The calculated tsunami forces acting on a caisson armored with blocks agreed well with the corresponding experimental ones. Sufficient stability of the armoring blocks against tsunamis was also confirmed by the experiments.

References

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Published
2017-06-23
How to Cite
Maruyama, S., Takayama, T., Shimosako, K., Yahiro, A., Suzuki, K., Aota, T., Tanaka, M., Matsumoto, A., & Hanzawa, M. (2017). ESTIMATION OF TSUNAMI FORCE ACTING ON THE BLOCK ARMORED BREAKWATER DUE TO SOLITON FISSION. Coastal Engineering Proceedings, 1(35), structures.19. https://doi.org/10.9753/icce.v35.structures.19