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All Journal JURNAL TEKNIK HIDRAULIK

Juventus Welly Ginting

Balai Litbang Pantai

Author-ID : 2642434

Civil Engineering, Building, Construction & Architecture Engineering

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Uji Model Detail Desain Tanggul Laut Semarangx Suprapto Suprapto; Juventus Welly Ginting
JURNAL TEKNIK HIDRAULIK Vol 9, No 2 (2018): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

The implementation of a detailed test model for the design of the Semarang sea wall was carried out to determine the level of stability of the sea dike structure in the form of cube-shaped concrete block armor with 1 m side. Besides, a test model was also conducted to evaluate the elevation of the sea dike against various wave conditions and increase in water level due to land subsidence. The Semarang sea wall was designed to with stand waves and tides, as well as toll roads, so that the model test was carried out to test the stability of the protective and runoff layers. There are 5 test scenarios carried out, namely LS01, LS05, LS10, LS15 and LS15-120% where each scenario shows land subsidence that occurs after 1 year, 5 years, 10 years and 15 years assuming the amount of land subsidence in Semarang 0 , 1 m / year. The test model results show that the stability of the protective armor structure with the concrete cube is quite high, as evidenced by the damage level which is quite low (NoD <0.5) in all conditions of the test scenario. Runoff starts in the LS 10, LS 15 and LS 15 scenarios 120% for 1,192 lt / dt / m, 6,588 lt / dt / m and 20,215 lt / dt / m, respectively. The runoff that occurs can be categorized functionally unsafe for vehicles in status (unsafe at any speed) while for the condition of the structure it is categorized as no damage. Therefore, a comprehensive evaluation of the stability and elevation / peak elevation needs of the embankment needs to be carried out after a 10-year service period.

Efisiensi Model Fisik Peredaman Energi Gelombang Dengan Permeable Breakwater Juventus Welly Ginting
JURNAL TEKNIK HIDRAULIK Vol 9, No 1 (2018): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

In this research calculates the efficiency of wave energy reduction by using permeable breakwater as an alternative coastal protection. The method used is to do physical modeling in the laboratory to get optimal efficiency. The preparation of the model scenario is done by changing the schematization of the model scenario by changing the permeable brackwater characteristics (width b and height h) to the water level d. and the T wave period. Wave energy is calculated at the location in front of the structure and behind the structure. After calculating the comparison of wave energy in the two locations, it can be obtained the efficiency value of wave energy reduction due to the existence of the structure. The influence of the structure dimension on the reduction of the highest wave energy is obtained with the highest energy reduction value when the condition h / B = 1 where the condition of the structure is the same as the width of the structure. In the conditions of damping the wave energy when compared to the water depth (d) the greatest energy reduction value is at d = 10 cm so that in its utilization as a wave energy damper the height of the structure must be higher than the mean Mean level level (MSL) in the area to be applied structure permeable breakwater will be placed.

PENGARUH DISAIN TANGGUL LUAR NCICD TERHADAP KEJADIAN TSUNAMI KRAKATAU 1883 Juventus Welly Ginting; Ida Ayu Irawati Diah Ratna Putra; Eduardo Meyrianso Simanjuntak
JURNAL TEKNIK HIDRAULIK Vol 11, No 1 (2020): 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 | DOI: 10.32679/jth.v11i1.637

Selama lima tahun terakhir telah dilaksanakan program penataan kawasan pesisir Jakarta yang diintegrasikan dalam suatu Program Pengembangan Terpadu Pesisir Ibukota Negara (PTPIN) atau sering disebut NCICD. Salah satu penataan yang dilakukan adalah dengan dibangunya tanggul luar. KOIKA sebagai salah satu pihak yang ikut dalam mendisain bentuk tanggul luar. Dalam laporan KOIKA “konsep disain Outer Sea Dike (OSD)” telah melakukan studi beberapa alternative bentuk profil tanggul serta layout dari rencana tanggul. Dari hasil kajian yang dilakukan oleh KOIKA diperoleh layout disain tanggul OSD. Disain yang ditawarkan oleh pihak KOIKA yaitu disain tanggul dengan disain terbuka (OSD open), tertutup (OSD Closed) serta dilengkapi dengan konsep reklamasi. Studi ini meninjau pengaruh pengaruh disain OSD terhadap kejadian tsunami Krakatau 1883. Dari hasil model numerik diperoleh disain tanggul OSD mempengaruhi ketinggian gelombang yang disebakan oleh tsunami untuk disain tanggul yang efektif untuk meredam ketinggian gelombang adalah disain dengan mengunakan disain kondisi eksisting dengan OSD open, jika dibandingkan dengan kondisi eksisting tanggul tersebut efektif untuk mengurangai ketinggian gelombang di 5 daerah kajian.

Kinerja Prototipe Papan Osilasi Pada Pompa Flap Tenaga Gelombang Untuk Pemanfaatan Mata Air Di Pantai Banyu Asri, Kota Singaraja - Bali Juventus Welly Ginting; I Ketut Dharma Setiawan
JURNAL TEKNIK HIDRAULIK Vol 9, No 2 (2018): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

The supply of raw water is generally water available from several sources, which are available only on a river, lake, water wells and springs. The extraction can be done by drilling, damming water, and pumping. Management of the potential of raw water in an area is determined by geographical and geological conditions. One of the occurrences of springs found in coastal areas is influenced by marine and geological parameters which will further affect the method of capture, management, and utilization. This prototype of raw water supply has been installed in a location around the spring at Banyu Asri Beach, Singaraja City, Buleleng Regency, Bali Province in 2013. Data collection methodology is carried out by observing the wave data, pumping discharge and water salinity. These observations were made for two types of oscillation boards, namely using wood and fiber. From this technology, it is expected that the supply of a stable source of springs and the mineral content that is maintained even though the position of the spring is strongly influenced by the tide of the sea water which often inundates the discharge point of the spring. The spring at Banyu Asri Beach has been widely used by the community for drinking water and ritual worship. From the results of the performance of the prototype after being installed at the location of the spring, it has shown the ability to drain fresh water through pipelines towards the land, although the wave height that occurs in very small locations ranges from 0.10 to 0.30 cm and the discharge flow is up to 0.03 L / sec.

Model Fisik Redaman Energi Gelombang Dengan Breakwater Tiang Juventus Welly Ginting; Ida Ayu Irawati Diah Ratna Putra; Eduardo Meyrianso Simanjuntak
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (2019): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Breakwaters is one of type coastal structure that is mainly used as part for coastal protection purposes. Among the various types of breakwaters, likely rigid and hollow vertical pole types are one of the alternative structures for coastal protection. The utilization of this structure usually in the port area or in marina which protrudes into the sea. The pile breakwater test was carried out at laboratory experimental station for coastal engineering Buleleng Bali, on a scale of 1:10. This trial was carried out using pile materials using PVC pipes with a diameter of 6 cm. Scaling of this model is based on the piles used in the project sea dike stage A-NCICD. In testing this physical model several variations were carried out such as tata letak variation (N), wave height (h), wave period (t), distance between piles (columns) relative to diameter (B/D), and distance between piles (row) relative to diameter (b / D). Based on the test results obtained the optimal stacking configuration to reduce wave energy is a configuration with pole configuration B / D = 1; b / D = 0.5

Co-Authors Eduardo Meyrianso Simanjuntak Eduardo Meyrianso Simanjuntak I Ketut Dharma Setiawan Ida Ayu Irawati Diah Ratna Putra Ida Ayu Irawati Diah Ratna Putra Suprapto Suprapto

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