Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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Three-dimensional Laboratory Experiments for Tsunami Force Coefficient at Imwon Port

임원항의 지진해일계수(α) 산정을 위한 3차원 수리모형실험

  • Kim, Byung Ho (Department of Civil and Environment Engineering, Hanyang University) ;
  • Yoon, Jae-Seon (Rural Research Institute Korea Rural Community Corporation) ;
  • Han, Se Jong (Department of Civil and Environment Engineering, Hanyang University) ;
  • Cho, Yong-Sik (Department of Civil and Environment Engineering, Hanyang University)
  • 김병호 (한양대학교 일반대학원 건설환경공학과) ;
  • 윤재선 (한국농어촌공사 농어촌연구원) ;
  • 한세종 (한양대학교 일반대학원 건설환경공학과) ;
  • 조용식 (한양대학교 일반대학원 건설환경공학과)
  • Received : 2015.09.02
  • Accepted : 2015.10.22
  • Published : 2015.12.31
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Abstract

Tsunamis mainly triggered by impulsive undersea earthquakes are one of most devastating natural disasters. They can travel long distances in all directions from the source region and strike not only neighboring countries but also distant countries. For example, the Central East Sea Tsunami occurred near the Japanese Western Coast on May 26, 1983 stroke the Eastern Coast of Korea across the East Sea. The tsunami killed 3 people and caused property damage at Imwon Port. Thus, an efficient and proper countermeasure is essential to mitigate damage. In this study, a series of laboratory experiments are carried out to investigate the tsunami force acting on coastal structures. A so-called tsunami force coefficient is found at Imwon Port. The coefficient covers most of forces acting on structures due to tsunamis.

주로 갑작스러운 해저지진에 의해 발생하는 지진해일은 가장 파괴적인 자연재해 중의 하나이다. 지진해일은 진원지로부터 모든 방향으로 전파되며, 부근의 국가뿐만 아니라 멀리 떨어진 국가에도 피해를 일으킨다. 예를 들어, 1983년 5월 26일 일본의 서해안에서 발생한 동해중부 지진해일은 동해를 가로질러 우리나라의 동해안에도 피해를 일으켰다. 지진해일은 임원항에서 3명의 인명피해와 막대한 재산피해를 초래하였다. 따라서 지진해일에 의한 피해를 줄이기 위해서는 효과적이며 적절한 방재대책이 필요하다. 본 연구에서는 지진해일에 의해 해안구조물에 작용하는 힘을 연구하기 위해 일련의 수리실험을 수행하였다. 임원항에서 지진해일에 의해 구조물에 작용하는 모든 힘을 포함하는 소위 지진해일계수를 결정하였다.

Keywords

Acknowledgement

Grant : 2단계 항만권역 태.폭풍 및 지진해일 재해대응체계 구축

Supported by : 한국해양과학기술진흥원

References

  1. Asakura, R., Iwase, K., Ikeya, T., Takao, M., Kaneto, T., Fujii, N. and Omori, M. (2000). An experimental study on wave force acting on on-shore structures due to overflowing tsunamis. Proc. Coastal Eng., JSCE, 47, 911-915. https://doi.org/10.2208/proce1989.47.911
  2. Cho, Y.-S. (1995) Numerical simulations of tsunami propagation and run-up, Ph.D. Thesis, Cornell University, USA.
  3. FEMA (2008). Guidelines for design of structures for vertical evacuation from tsunamis. Report number P616.
  4. Fujima K., Achmad F., Shigihara, Y. and Mizutani, N. (2009). Estimation of tsunami force acting on rectangular structures. Journal of Disaster Research, 4(6), 404-409. https://doi.org/10.20965/jdr.2009.p0404
  5. Lee, H.J., Cho, Y.-S., Kim, K.H. (2002). Numerical simulations of 1983 central east sea tsunami at Imwon:2. Run-up process at Imwon port. Journal of Korea Water Resources Association. vol. 4, no. 4, pp. 453-461.
  6. Lee, K., Ha, S.W., Lee K.S. and Kim, D.S. (2011). Numerical analysis for three-dimensional tsunami force acting on multionshore structures. J. Korea Society of Civil Engineers, 31(2B), 175-185.
  7. Ramsden, J.D. (1993). Tsunamis : forces on a vertical wall caused by long waves, bores, and surges on a dry bed. California Institute of Technology, Pasadena, California, Ph. D. Thesis.
  8. Synolakis, C.E. (1987). The run-up of solitary waves. Journal of Fluid Mechanics, Vol. 18, pp. 523-545.
  9. Tanimoto, K., Takayama, T., Murakami, K., Murata, S., Tsuruya, H., Takahashi, S., Morikawa, M., Yoshimoto, Y., Nakano S. and Hiraishi, T. (1983). Field and laboratory investigations of the tsunami caused by 1983 Nihonkai Chubu earthquake. PARI Techinical Note 0470, The Port and Harbour Research Institute, Yokosuka, Japan.
  10. Tanimoto, K., Tsuruya, H., and Nakano, S. (1984) Experimental study of tsunami force and investigation of the cause of sea wall damages during 1983 Nihonkai chubu earthquake. Proc. of 31th Japanese Conf. on Coastal Engrg., JSCE, pp. 257-261.
  11. Zhang, W. (2009). An experimental study and a three-dimensional numerical wave basin model of solitary wave impact on a vertical cylinder. Oregon State Univ., Ph.D. Thesis, USA.