A model study on the stability of rubble mound coastal defense structure

Şimşek, Kemal Cihan
Coastal regions are very important because they provide a lot of resources and benefits for all the humankind. Coastal defense structures protect coastal regions from wave attacks. However, the cost of construction such coastal defense structures are very high and need big investments. Hence, to reach the optimum design and minimize the risk of failure has vital importance during the design stage of these structures. Model studies are the most effective tool in optimizing the design of these structures. Rubble mound coastal defense structures were constructed with assembly of different sizes of armor stones and front slopes. Rubble mound coastal defense structures were designed by Van der Meer‟s approach and the stability of the cross sections were tested on the models constructed with a scale of 1:33.485 in the Coastal and Harbor v Engineering Laboratory, Civil Engineering Department, Middle East Technical University. Results of the model studies showed that structures with steep slopes were damaged more than structures with mild slopes and the stability of the structures were directly affected by the armor stone sizes. In the model studies, different cross sections were tested for stability to obtain the cumulative damages under severe storm conditions. These cumulative damages, which are obtained by stone count method, are converted to the damage parameters, Sd, to compare with the existing studies. It was observed that the results of the stability formulae of Van der Meer for shallow water were very consistent with the results of model studies as they were designed according to Van der Meer approach.
Citation Formats
K. C. Şimşek, “A model study on the stability of rubble mound coastal defense structure,” M.S. - Master of Science, Middle East Technical University, 2011.