期刊名称：International Journal of Environment and Geoinformatics
电子版ISSN：2148-9173
出版年度：2015
卷号：2
期号：2
页码：88-104
DOI：10.30897/ijegeo.303548
语种：English
出版社：IJEGEO
摘要：The present study intends to assess the stability and energy dissipation performances of abreakwater configuration (APC) protected by an antifer layer. For comparison, an ordinary caisson(OC), which was 5% wider and 10% heavier, was also investigated. Physical models wereimplemented and tested under regular and irregular waves; and resulting linear and angulardisplacements were directly measured via a photogrammetric method. Additionally, wave forcesand resulting horizontal displacements were estimated both from recorded pressure data and fromindividual incident waves by modified Goda method. To calculate the horizontal displacement, theestimated wave force time series were directly double-integrated, whilst the theoretical methodproposed by Shimosako et al. (1994) were used on the individual force values. Although OC wastested under shorter durations and had a more favorable superstructure in terms of resisting forces,the results indicated that APC was significantly more stable. Energy dissipation performance of thetested configurations were quantified in terms of spectral averaged and phase resolved reflectioncoefficients, whereas antifer damage ratio was measured on a block-count basis. Results indicatedthat the APC configuration had an enhanced performance of dissipating the wave energy; moreover,the dissipated energy directly links to antifer damage ratio.
