Author(s): Agustia A. Larasari; Semeidi Husrin; Huda Bachtiar; Leo E. Sembiring
Linked Author(s):
Keywords: Physical model; Wave transformation; Wave-structure interaction; Sea dike; NCICD
Abstract: This preliminary research was conducted in supporting the development program of Jakarta's outer sea dike as part of the National Capital Integrated Coastal Development Program (the NCICD Program). The objective of this paper is to identify the key hydraulic parameters in designing Jakarta’s outer sea dike by analyzing wave transformation and wave-structure interaction processes, i.e. wave reflection, wave energy dissipation, wave run-up and overtopping on three selected profiles (vertical wall, sloping, and sloping with berm). Comparison between smooth and rock impermeable structure was also presented in the model. Extensive data were obtained from physical model tests performed in 1,0m-wide and 45m-length wave flume at the Laboratory of Experimental Station for Coastal Engineering Buleleng, Bali. The selected dike profiles were brought into 1:30 scale model subjected to regular and JONSWAP spectrum-irregular waves. Important parameters such as wave reflection and energy dissipation were measured using a set of wave probes. During the experiment, multiple video cameras recorded the model from different angles to help visual observation. The hydraulic parameters resulted from each profile have provided consideration and recommendation for the ongoing study of dike profile optimization of Jakarta’s outer sea dike.
Year: 2018