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All Journal JURNAL TEKNIK HIDRAULIK
Irham Adrie Hakiki
Balai Litbang Pantai Puslitbang Sumber Daya Air Kementerian Pekerjaan Umum dan Perumahan Rakyat
Civil Engineering, Building, Construction & Architecture Engineering

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UJI MODEL HIDROLIKA KINERJA PEMECAH GELOMBANG APUNG BETON DENGAN KONFIGURASI GANDA Irham Adrie Hakiki; Leo Eliasta Sembiring
JURNAL TEKNIK HIDRAULIK Vol 11, No 2 (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.v11i2.629

Abstract

Development of floating breakwater technology is increasing along with the rising interest of floating infrastructure. Different kind of materials and shapes were researched for optimizing the performance of floating breakwater. In comparison of structure with a similar dimension, the more rigid one gave a better performance. Large and rigid structure are possible to construct with the usage of concrete. However, when there is a limit to the structure dimension, whether it is caused by construction or transportation method, the alternatives for improving performance are needed. This research proposed a double configuration setup to cope with the said limitation. The breakwater performance is tested with physical model in laboratory by comparing performance of single pontoon with double pontoon for various structure spacing. Pontoon size are 1.2 m in length, 0.3 m in width, and 0.15 m in height and tested with many combinations of irregular waves. For double configurations model, the spacing of 30 cm, 60 cm, and 90 cm are used. Based on tested result, there are improvement up to 20% by using the double configuration. The improvement determined by ratio of structure spacing with wavelength. Larger ratio resulted a better performance in condition where the spacing did not exceed 0,65 length of wavelength.
Beban Gelombang Pada Tiang Pancang Penahan Ponton Yang Diletakan Di Depan Dinding Vertikal Irham Adrie Hakiki; Vilda Ariviana; Ika Nur Afifah; Leo Eliasta Sembiring
JURNAL TEKNIK HIDRAULIK Vol 10, No 2 (2019): 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.v10i2.615

Abstract

Experimental Station for Coastal  developed a pilot project of modular concrete floating structure that served as a quay at Kalibaru in North Jakarta. The structure guided by piles and placed in front of Jakarta Coastal Dyke which is a vertical wall structure. From evaluating the structure performance, it is found that the strength of the pile is an important factor for service life of the structure. To provide this, a physical model test of the floating pontoon module guided by piles was conducted at the Laboratory of Balai Litbang Pantai. The model used to determine the behavior of the structure and loads that must be hold by the pile as a seakeeping mechanism. It is done by measuring force acting on piles that caused by pontoon impact by using load cells. The pontoon loaded by regular and irregular waves. From the tests result, the recorded forces has an impuls pattern which have maximum value of 112.67 N. The load that occurs on the pile was not spread evenly on the four piles that hold the floating module. The disrepancy are around 2 – 40%.   The forces acting on piles depends on the ponton distance to the vertical wall. The forces increases along with the increases of relative distances of structure to vertical wall  to the wavelength. The presence of vertical vall caused this increase because it amplify the waves acting on the structure. The amplification effect are the greatest when the structure distrance from the wall is the multiplication factor of halves of wavelength.Keywords : physical model test, pontoon, floating quay, pile guide, impact force
Co-Authors Ika Nur Afifah Leo Eliasta Sembiring Leo Eliasta Sembiring Vilda Ariviana