Model Numerik Gaya Tali Tambat Sistem Catenary Pada Floating Breakwater Tipe Gergaji Berpori

Azis, Brilliyan Prasetyo (2020) Model Numerik Gaya Tali Tambat Sistem Catenary Pada Floating Breakwater Tipe Gergaji Berpori. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pantai merupakan suatu daerah pertemuan antara daratan dengan perariran laut. Daerah pantai sendiri sering dikaitkan dengan wilayah pesisir dimana daerah tersebut mengalami pasang surut air laut. Wilayah pesisir biasa juga disebut sebagai wilayah peralihan dimana banyak ekosistem darat dan ekosistem laut saling berinteraksi. Di Indonesia, interaksi kedua ekosistem ini sering digunakan sebagai mata pencaharian sehingga muncul istilah kehidupan pesisir pantai. Namun seiring berjalannya waktu, daerah pantai mengalami abrasi yang diakibatkan oleh gelombang laut yang datang dan menghantam pantai sehingga berkurangnya areal pantai. Fenomena ini menjadi salah satu isu penting di lingkup bidang teknik kelautan. Breakwater merupakan bangunan struktur yang digunakan untuk melindungi daerah perairan oleh gelombang gelombang besar di laut. Breakwater terdapat dua jenis yakni breakwater konvensional dan floating breakwater biasanya ditambatkan pada tali tambat agar struktur tetap pada posisinya. Tali tambat Floating Breakwater ini perlu dianalisis agar struktur dapat bekerja dengan baik. Pada penelitian ini penulis akan melakukan analisis perilaku gerak dan gaya tali tambat sistem catemary pada floating breakwater tipe ponton dan gergaji berpori dengan variasi elevasi muka air. Metode yang dilakukan pada penelitian ini yaitu dengan memodelkan floating breakwater tipe gergaji berpori dan ponton sebagai pembanding berdasarkan data lingkungan percobaan laboratorium sebelumnya yang selanjutnya dianalisis respons geraknya kemudian menganalisis tegangan tali tambatnya pada variasi elevasi muka air dengan software ANSYS AQWA. Elevasi muka air yang digunakan terdiri dari 41 cm, 43 cm, 45 cm. Hasil tegangan maksimum tali tambat pada tipe gergaji berpori dengan elevasi muka air 41 cm, 43 cm, 45 cm berturut-turut adalah 3,660 N; 3,839 N dan 4,342 N. Sedangkan hasil tegangan tali tambat pada tipe ponton dengan elevasi muka air 41 cm, 43 cm, 45 cm berturut-turut adalah 4,240 N, 4,662 N dan 4,893 N. ============================================================ ============================================================ Beach is a meeting area between the mainland and sea waters. The coastal area itself is often associated with coastal areas where the area experiences tides. Coastal areas are also commonly referred to as transitional areas where many terrestrial and marine ecosystems interact with each other. In Indonesia, the interaction of these two ecosystems is often used as a livelihood so that the term coastal life appears. But over time, coastal areas experience abrasion caused by ocean waves that come and hit the coast so that the reduced coastal area. This phenomenon is one of the important issues in the scope of the field of marine engineering. Breakwater is a structural building used to protect water areas by large waves in the sea. There are two types of breakwater namely conventional breakwater and floating breakwater usually tethered to mooring ropes so that the structure remains in position. This Floating Breakwater mooring rope needs to be analyzed so that the structure can work well. In this study, the authors will analyze the behavior of the motion and mooring forces of the catemary system on pontoons and porous saws floating breakwater with variations in water level. The method used in this research is to model porous saws-type floating breakwater and pontoon -type as a comparison based on previous laboratory experiments environmental data which are then analyzed for their motion response and then analyze their mooring tension on variations in water level elevation with software ANSYS AQWA. The water level used consists of 41 cm, 43 cm, 45 cm. The maximum yield of mooring straps at the type of porous saws with water level elevations of 41 cm, 43 cm, 45 cm are 3,660 N; 3,839 N dan 4,342 N. While the results of mooring rope tension in the pontoon type with a water level elevation of 41 cm, 43 cm, 45 cm are 4,240 N, 4,662 N dan 4,893 N.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: floating breakwater, sistem catenary, elevasi muka air, response amplitude operator, dan tegangan tali tambat, Floating Breakwater, Tension Mooring Line, Catenary Mooring System, and Water Level Elevation
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC203.5 Coastal engineering
T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters
T Technology > TC Hydraulic engineering. Ocean engineering > TC363 Floating harbors. Including floating docks, piers, etc
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Brilliyan Prasetyo Azis
Date Deposited: 14 Aug 2020 07:20
Last Modified: 14 Aug 2020 07:20
URI: https://repository.its.ac.id/id/eprint/78183

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