Hidayat, Widhi Yuliarta (2016) Pengaruh Sudut Datang Gelombang Terhadap Transmisi Gelombang Pada Model Floating Breakwater Dengan Pengujian Model Fisik 3d. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Untuk melindungi pantai dari kerusakan yang disebabkan oleh gelombang
perairan dibutuhkan suatu bangunan pelindung pantai (breakwater). Penelitian
yang dilakukan oleh Balai Pantai Pusat Penelitian dan Pengembangan Pekerjaan
Umum (PU) adalah salah satu bagian untuk membuat bangunan pelindung pantai
(breakwater) tersebut. Floating breakwater menjadi solusi alternatif yang tepat
untuk mengatasi permasalahan tersebut. Keuntungan dari adanya floating
breakwater antara lain dapat dibangun dalam waktu singkat, mudah dan dengan
biaya yang cukup terjangkau, floating breakwater juga dapat meminimalisasi
pengaruh akibat sirkulasi air, transpor sediment, dan migrasi ikan serta floating
breakwater dapat dengan mudah dipindahkan dan dirakit kembali dengan susunan
konfigurasi yang berbeda serta dapat dipindahkan ke lokasi yang berbeda.
Struktur yang akan digunakan berupa kubus floaton dari bahan HDPE (High
Density Poly Ethylene). Struktur jenis ini belum dikembangkan, sehingga perlu
diketahui efektivitas dan dampak penggunaan struktur apung dalam rangka
mendorong penggunaan struktur apung dimasa yang akan datang. Pada tugas
akhir ini membahas hasil kinerja floating breakwater model BOX FULL dan
INVERTED-U dalam meredam gelombang berdasarkan transmisi gelombang dari
tinggi gelombang sebelum dan sesudah mengenai model. Pengujian penelitian ini
nantinya akan didapatkan diagram perbandingan koefisien transmisi dan wave
steepness yang berguna untuk menganalisa faktor apa saja yang mempengaruhi
nilai koefisien tansmisi gelombang. Dari hasil pengujian model fisik 3D ini
didapatkan koefisien transmisi terkecil dari sudut arah gelombang 900, dari sudut
450 dan 1350 memiliki nilai koefisien transmisi yang hampir sama. Model BOX
FULL dengan nilai koefisien transmisi rata-rata terkecil 0,90 lebih baik dalam
meredam gelombang daripada model INVERTED-U dengan nilai koefisien
transmisi rata-rata terkecil 0,93.
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Protecting the coast from damages caused by waves required a coastal protection
structure. One good example for such structure is breakwater. Research conducted
by the Research and Development Centre of Public Works (PU) is one example to
develop the coastal protection structure (breakwater). Floating breakwater
becomes an appropriate alternative solution to overcome these problems. The
advantages of the floating breakwater compared to the others are they could be
built easily in a short time, and in an affordable cost, floating breakwater can also
minimize the effect due to the water circulation, sedimental transport, and fish
migration, and they are able to be easily moved to different locations and
reassembled with the different configuration cascade. The structure used in the
form of a floaton cube made of HDPE (High Density Poly Ethylene). The
structure of this type has not been developed, so keep in mind the effectiveness
and impact of the use of floating structures in order to encourage the use of
floating structures in the future. This thesis discusses the results of the
performance of a floating breakwater model BOX FULL and INVERTED-U in
wave reduction by wave transmission of wave height before and after the models.
Testing of this study will be obtained transmission coefficient comparison charts
and wave steepness that is useful to analyze the factors that influence the value of
the coefficient transmission. From the 3D physical model test results are obtained
transmission coefficient of the smallest in terms of wave direction 900, from the
angle of 450 and 1350 having a transmission coefficient values are almost the
same. BOX FULL models with the smallest transmission coefficient averaging at
0,90 is better in reducing the wave rather than model INVERTED-U with the
smallest transmission coefficient averaging 0,93.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 627.24 Hid p |
| Uncontrolled Keywords: | Floating Breakwater, Transmisi Gelombang |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 14 Feb 2018 08:22 |
| Last Modified: | 26 Dec 2018 08:47 |
| URI: | http://repository.its.ac.id/id/eprint/51271 |
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