Perancangan Peredam Gelombang Struktur Terapung

Putra, Andhika Sukmana (2009) Perancangan Peredam Gelombang Struktur Terapung. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 4304100039-Undergraduate_Thesis.pdf - Accepted Version Download (31MB)

Abstract

Selama ini kita mengenal tentang peredam gelombang dengan tipe rubblemound. Karena tidak selalu daerah pantai yang dilindungi memiliki sumber batu belah dan akses jalan, sehingga tingkat ekonomisnya menjadi sangat rendah. Oleh karena itu diperlukan suatu peredam gelombang yang memiliki mobilitas dengan tidak mengurangi efisiensi biaya maupun dari aspek fungsi sebagai peredam gelombang. Dalam perencanaannyafloating breakwater ini memiliki empat aspek, pertama buoyancy danfloating stability, kedua gelombang transmisi, ketiga gaya pada mooring, dan keempat breakwater unit struktural design. Langkah awal adalah dengan menentukan range d/h dengan batasan gelombang transmisi yang tidak merusak pantai dan freeboard (h) tidak melebihi tinggi gelombang maksimum dari perhitungan periode ulang. Pada penelitian ini digunakan dimensi struktur 25m x 8m x 5m yang masih memenuhi range dlh dengan batasan tinggi gelombang 100 tahunan. Struktur floating breakwater menggunakan bahan ferro cement dengan p = 2.5 ton/m3 . Dari dimensi tersebut, dianalisa buoyancy dan stabilitasnya. Pada stabilitas dilakukan perbandingan antara righthing arm dengan heeling moment, sehingga didapat rasio perbandingannya dan struktur ini mampu bertahan hingga kecepatan angin 4 m/s. Dalam penentukan dimensi chain cable sebesar 66 mm diperlukan total gaya arah horizontal sebesar 2285 kN , sehingga diketahui beban pada masing-masing mooring line sebesar 1142.5 kN. Dengan menggunakan Moses dilakukan pemodelan struktur floating breakwater hingga didapat righting arm dan gaya gelombang terhadap struktur.
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breakwater. Because not always coast area protected has source of split stone and street access, so that economic become very low. Therefore is required an ocean wave damper having mobility with high efficiency as wave damper. The floating breakwater has four aspects, firstly buoyancy and floating stability, secondly waving transmission, thirdly force at mooring, and fourth breakwater structural unit of design. Initial step is by determining range dlh with constrain wave transmission that is not destroy coast, and freeboard (h) doesn't exceed maximum design wave height. At this research applied structure dimension is 25m x 8m x 5m which still fulfilling range dlh with wave height constrain 100 return period. Structure floating breakwater applies material ferro cement with p = 25 ton/m3. Based on the dimension, the buoyancy and stability was analysed. At stability check is done comparison of righthing arm with heeling moment. It was found the ratio of righting arm and heeling moment equa to 1. 7 for wind load of 4 m/s. In determinantion of dimension chain cable 66 mm is required to hold the total horizontal force 2285 kN, that give force at each mooring line 11425 kN. Moses was used to model the structure floating breakwater, to find righting arm and wave force to structure.

Item Type:	Thesis (Other)
Additional Information:	RSKe 627.24 Put p-1 2009
Uncontrolled Keywords:	floating breakwater,gelombang transmisi, stabilitas, bouyancy, mooring force,Moses,floating breakwater,transmission wave , stability, buoyancy, mooring force,Moses
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Totok Setiawan
Date Deposited:	20 Nov 2023 01:43
Last Modified:	20 Nov 2023 01:43
URI:	http://repository.its.ac.id/id/eprint/105155

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