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I Ketut Dharma Setiawan
Balai Litbang Pantai, Puslitbang SDA
Civil Engineering, Building, Construction & Architecture Engineering

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Transmisi Gelombang Pada Pemecah Gelombang Tenggelam Blok Beton Berkait I Ketut Dharma Setiawan
JURNAL TEKNIK HIDRAULIK Vol 8, No 2 (2017): Jurnal Teknik Hidraulik
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1292.504 KB) | DOI: 10.32679/jth.v8i2.332

Abstract

When a large dimension of rock needed for an armored layer of breakwater, the scarcity of it became a major adversity, because of that many research subject of using concrete as a substitute for rock performed. One of the research are the usage of concrete block for submerged breakwater as a method for avoiding a very large concrete block, but still able to withstood wave forces. The key is in the interlocking of each concrete block so it could achieve the desired result with a lesser dimension concrete block. The research was performed in Laboratory of Coastal Experimental Station, Water Resource Research Center, using a 2D channel. The facility used were flume channel, regular wave generator machine, wave dumper, wave probe, and computer for processing data. The experiment indicate that the wave energy attenuation depends on the dimension of interlocking concrete block type submerged breakwater. The dimension represented in the form of relation of the distance of water level to structures crest and the crests width. The performance of the structure evaluated by observing its transmission coefficient. The largest transmission coefficient obtained is 0,97 and the smallest is 0,43.
Refleksi Gelombang Pada Pemecah Gelombang Tenggelam Blok Beton Berkait I Ketut Dharma Setiawan; Juventus Welly Radianta Ginting
JURNAL TEKNIK HIDRAULIK Vol 9, No 1 (2018): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (643.912 KB) | DOI: 10.32679/jth.v9i1.335

Abstract

When a large dimension of rock needed for an armored layer of breakwater, the scarcity of it became a major adversity, because of that many research subject of using concrete as a substitute for rock performed. One of the research are the usage of concrete block for submerged breakwater as a method for avoiding a very large concrete block, but still able to withstood wave forces. The key is in the interlocking of each concrete block so it could achieve the desired result with a lesser dimension concrete block. The research was performed in Laboratory of Coastal Experimental Station, Water Resource Research Center, using a 2D channel. The facility used were flume channel, regular wave generator machine, wave dumper, wave probe, and computer for processing data. The experiment indicate that the wave energy attenuation depends on the dimension of interlocking concrete block type submerged breakwater. The dimension represented in the form of relation of the distance of water level to structures crest and the crests width. The breakwater performance of the concrete block is quite useful as an underwater coastal protection building viewed from reflection with a reflection coefficient of 34.7% at (h?d) / h = 0 and the peak width of B = 2.0
Co-Authors Juventus Welly Radianta Ginting