Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/210969
Title: Centrifuge modelling of caisson breakwater subject to wave-breaking impacts
Authors: Zhang, XY 
Leung, CF 
Lee, FH 
Keywords: Science & Technology
Technology
Physical Sciences
Engineering, Marine
Engineering, Civil
Engineering, Ocean
Oceanography
Engineering
Centrifuge modelling
Caisson breakwater
Wave breaking
Impact loading
Sand bed
Displacement
Pore pressure
MARINE STRUCTURES
SPECIAL-ISSUE
LIQUEFACTION
SAND
Issue Date: 1-Sep-2009
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: Zhang, XY, Leung, CF, Lee, FH (2009-09-01). Centrifuge modelling of caisson breakwater subject to wave-breaking impacts. OCEAN ENGINEERING 36 (12-13) : 914-929. ScholarBank@NUS Repository.
Abstract: Model tests were conducted to investigate the behaviour of caisson breakwater resting on sand beds subject to impacts due to wave breaking. The centrifuge modelling technique was employed to simulate the prototype stress levels in the foundation soil as the behaviour of sand is highly stress dependent. A wave actuator was developed to simulate the wave-breaking impact loads on the caisson during centrifuge flight. The test results reveal that the vertical and horizontal movements and tilt of the caisson breakwater increase progressively with the number of breaking-wave impacts. The excess pore pressures developed in the foundation sand under non-reversal loading are generally small and appear insignificant. The results of the parametric studies conducted to examine the effects of impact-load pattern, caisson width, rock berm beneath caisson, wave slamming on top slab of caisson and cyclic preloading on the performance of caisson breakwater are also presented. The practical implications of the experimental findings in the present study are also highlighted in this paper. © 2009 Elsevier Ltd. All rights reserved.
Source Title: OCEAN ENGINEERING
URI: https://scholarbank.nus.edu.sg/handle/10635/210969
ISSN: 00298018
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