Performance-Based Design of Perforated-Wall Caisson Breakwaters OTHER

Title
Performance-Based Design of Perforated-Wall Caisson Breakwaters
Alternative Title
Performance-Based Design of Perforated-Wall Caisson Breakwaters
Author(s)
서경덕; 김남훈; 오상호; 지창환; 김동현
KIOST Author(s)
Oh, Sang Ho(오상호)
Publication Year
2018
Abstract
In this study, the performance-based design method developed for a conventional
solid-wall caisson breakwater is extended to a perforated-wall caisson breakwater.
First, to verify the mathematical model to calculate the sliding distance of a perforated wall
caisson, hydraulic experiment is conducted. A good agreement is shown between
the model and experimental results. The developed performance-based design method
is then compared with the conventional deterministic method in different water depths.
Both the expected sliding distance and the exceedance percentage of total sliding
distance during the structure lifetime decrease with decreasing water depth outside the
surf zone, but they increase with decreasing water depth inside the surf zone. The
performance-based design method is either more economical or less economical than
the deterministic method depending on which design criterion is used. If the criterion
for the expected sliding distance or the exceedance percentage in the ultimate limit
state is used, the former method is less economical than the latter outside the surf
zone, whereas the two methods are equally economical inside the surf zone. However,
if the breakwater is designed to satisfy the criterion for the exceedance percentage in
the repairable limit state, the former method is more economical than the latter in all
water depths.f a perforated wall
caisson, hydraulic experiment is conducted. A good agreement is shown between
the model and experimental results. The developed performance-based design method
is then compared with the conventional deterministic method in different water depths.
Both the expected sliding distance and the exceedance percentage of total sliding
distance during the structure lifetime decrease with decreasing water depth outside the
surf zone, but they increase with decreasing water depth inside the surf zone. The
performance-based design method is either more economical or less economical than
the deterministic method depending on which design criterion is used. If the criterion
for the expected sliding distance or the exceedance percentage in the ultimate limit
state is used, the former method is less economical than the latter outside the surf
zone, whereas the two methods are equally economical inside the surf zone. However,
if the breakwater is designed to satisfy the criterion for the exceedance percentage in
the repairable limit state, the former method is more economical than the latter in all
water depths.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1081
Bibliographic Citation
International Journal of Ocean and Coastal Engineering, v.1, no.1, pp.1 - 32, 2018
Type
Article
Language
English
Related Researcher
Research Interests

Coastal engineering,Physical experiment,Coastal wave,항만공학,수리실험,연안파랑

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