TIME-DEPENDENT PERFORMANCE-BASED DESIGN OF CAISSON BREAKWATER CONSIDERING CLIMATE CHANGE IMPACTS

Seung-Woo Kim, Kyung-Duck Suh

Abstract


A time-dependent performance-based analysis was conducted to analyze the influences of sea-level rise and wave-height increase due to climate change on caisson sliding of the breakwaters designed in different water depths. We used the Goda’s spectral method to overcome the time-consuming problem in the calculation of the wave height at the breakwater site. In general, severe caisson sliding occurred when considering the climate change impacts. However, the influence of sea-level rise on the stability of caisson sliding is insignificant compared with that of wave-height increase. Especially, since the characteristics of caisson sliding are different depending on water depths, we have to establish countermeasure against these features for the design and maintenance of a caisson breakwater.

Keywords


caisson breakwater; caisson sliding; performance-based design; climate change impacts

References


Kim, T. M. and Takayama, T. 2003. Computational improvement for expected sliding distance of a caisson-type breakwater by introduction of a doubly-truncated normal distribution, Coastal Engineering Journal, 45, 387-419.http://dx.doi.org/10.1142/S0578563403000816

Kweon, H.M. and Goda, Y. 1996. A parametric model for random wave deformation by breaking on arbitrary beach profiles, Proceedings of 25th International Conference on Coastal Engineering, ASCE, 261-274.

Kweon, H.M., Sato, K. and Goda, Y. 1997. A 3-D random breaking model for directional spectral waves, Proceedings 3rd International Symposium on Ocean Wave Measurement and Analysis, ASCE, 416-430.

Goda, Y. 1975. Irregular wave deformation in the surf zone. Coastal Engineering in Japan, 18, 13-26.

Goda, Y. 2010. Random seas and design of maritime of structures, World Scientific, Singapore.http://dx.doi.org/10.1142/7425

Goda, Y. and Suzuki, Y. 1975. Computation of refraction and diffraction of sea waves with Mitsuyasu's directional spectrum. Technical note of Port and Harbour Research Institute 230, pp. 45 (in Japanese)

Goda, Y. and Takagi, H. 2000. A reliability design method of caisson breakwaters with optimal wave heights. Coastal Engineering Journal, 42, 57-387.http://dx.doi.org/10.1142/S0578563400000183

Hong, S. Y., Suh, K.-D. and Kweon, H.M. 2004. Calculation of expected sliding distance of breakwater caisson considering variability in wave direction, Coastal Engineering Journal, 46, 119-140.http://dx.doi.org/10.1142/S0578563404000987

Iwagaki, Y., Shiota, K. and Doi, H. 1981. Shoaling and refraction of finite amplitude waves. In Proceedings of 28th Japanese Conference on Coastal Engineering, 99-103 (in Japanese).

Mase, H. and Kirby, J.T. 1992. Hybrid frequency-domain KdV equation for random wave transformation, Proceedings of 23rd International Conference on Coastal Engineering, ASCE, 474-487.

Mori, N., Nakajo, S., Yasuda, T. and Mase, H. 2011. Multi-model ensemble projection of coastal environment under a global warming scenario. Journal of Climate (submitted).

Oumeraci, H., Kortenhaus, A., Allsop, W., De Groot, M., Crouch, R., Vrijling, H. and Voortman, H. 2001. Probabilistic design tools for vertical breakwaters, Balkema, Lisse, Netherlands.

Overseas Coastal Area Development Institute of Japan (OCDI). 2009. Technical standards and commentaries for port and harbor facilities in Japan, Ports and Harbour Bureau, Ministry of Land,

Takahashi, S., Shimosako, K., Kimura, K. and Suzuki, K. 2000. Typical failure of composite breakwaters in Japan, Proceedings of 27th International Conference on Coastal Engineering, ASCE, 1899-1910.

Takata, E., Morohoshi, K., Hiraishi, T., Nagai, T. and Takemura, S., 2003. Distributions of the wave, storm surge and tsunami design conditions on Japanese nationwide coastal structures, Technical Note No. 88, National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport, Japan (in Japanese).

Takayama, T. and Ikeda, N. 1993. Estimation of sliding failure probability of present breakwater for probabilistic design, Report 031-05-01, Port and Harbour Research Institute, Ministry of Transport, Yokosuka, Japan, 3-32.

U.S. Army Coastal Eng. Res. Center (1984). Shore Protection Manual 4rd ed., U.S. Government Publishing Office, Washington, D.C., USA.


Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.