Wave run-up on bermed coastal structures

Karthika KrishnaPillai, Amir Etemad-Shahidi, Charles Lemckert

Research output: Contribution to journalArticle

Abstract

Reliable estimation of wave run-up is required for the effective and efficient design of coastal structures when flooding or wave overtopping volumes are an important consideration in the design process. In this study, a unified formula for the wave run-up on bermed structures has been developed using collected and existing data. As data on berm breakwaters was highly limited, physical model tests were conducted and the run-up was measured. Conventional governing parameters and influencing factors were then used to predict the dimensionless run-up level with 2% exceedance probability. The developed formula includes the effect of water depth which is required in understanding the influence of sea level rise and consequent changes of wave height to water depth ratio on the future hydraulic performance of the structures. The accuracy measures such as RMSE and Bias indicated that the developed formula is more accurate than the existing formulas. Additionally, the new formula was validated using field measurements and its superiority was observed when compared to the existing prediction formulas. Finally, the new design formula incorporating the partial safety factor was introduced as a design tool for engineers.
Original languageEnglish
Article number0141-1187
Pages (from-to)188–194
Number of pages7
JournalApplied Ocean Research
Volume86
Publication statusPublished - 11 Feb 2019

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Breakwaters
Safety factor
Sea level
Water
Hydraulics
Engineers

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KrishnaPillai, K., Etemad-Shahidi, A., & Lemckert, C. (2019). Wave run-up on bermed coastal structures. Applied Ocean Research, 86, 188–194. [0141-1187].
KrishnaPillai, Karthika ; Etemad-Shahidi, Amir ; Lemckert, Charles. / Wave run-up on bermed coastal structures. In: Applied Ocean Research. 2019 ; Vol. 86. pp. 188–194.
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KrishnaPillai, K, Etemad-Shahidi, A & Lemckert, C 2019, 'Wave run-up on bermed coastal structures', Applied Ocean Research, vol. 86, 0141-1187, pp. 188–194.

Wave run-up on bermed coastal structures. / KrishnaPillai, Karthika; Etemad-Shahidi, Amir; Lemckert, Charles.

In: Applied Ocean Research, Vol. 86, 0141-1187, 11.02.2019, p. 188–194.

Research output: Contribution to journalArticle

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T1 - Wave run-up on bermed coastal structures

AU - KrishnaPillai, Karthika

AU - Etemad-Shahidi, Amir

AU - Lemckert, Charles

PY - 2019/2/11

Y1 - 2019/2/11

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AB - Reliable estimation of wave run-up is required for the effective and efficient design of coastal structures when flooding or wave overtopping volumes are an important consideration in the design process. In this study, a unified formula for the wave run-up on bermed structures has been developed using collected and existing data. As data on berm breakwaters was highly limited, physical model tests were conducted and the run-up was measured. Conventional governing parameters and influencing factors were then used to predict the dimensionless run-up level with 2% exceedance probability. The developed formula includes the effect of water depth which is required in understanding the influence of sea level rise and consequent changes of wave height to water depth ratio on the future hydraulic performance of the structures. The accuracy measures such as RMSE and Bias indicated that the developed formula is more accurate than the existing formulas. Additionally, the new formula was validated using field measurements and its superiority was observed when compared to the existing prediction formulas. Finally, the new design formula incorporating the partial safety factor was introduced as a design tool for engineers.

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KW - Bermed structures

KW - Laboratory experiments

KW - Surf similarity

KW - Prediction formula

KW - Field measurements

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JO - Applied Ocean Research

JF - Applied Ocean Research

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KrishnaPillai K, Etemad-Shahidi A, Lemckert C. Wave run-up on bermed coastal structures. Applied Ocean Research. 2019 Feb 11;86:188–194. 0141-1187.