Studi Eksperimen Pengaruh Elevasi Muka Air Terhadap Stabilitas BPPT-Lock Sebagai Unit Pelindung Revetment

Pratiwi, Dwi Rizkha Yunia (2022) Studi Eksperimen Pengaruh Elevasi Muka Air Terhadap Stabilitas BPPT-Lock Sebagai Unit Pelindung Revetment. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Revetment merupakan salah satu jenis struktur perlindungan pantai terhadap gaya gelombang atau arus. Perencanaan struktur revetment perlu dipertimbangkan penentuan beban dominan yang nantinya akan diterima struktur tersebut. Dalam revetment tersusun dari armour unit yang pada dasarnya, armour unit tidak dapat stabil dalam menahan gaya gelombang. Oleh sebab itu, ukuran dan bentuknya harus direncanakan agar tetap stabil. Pada penelitian ini dilakukan analisis stabilitas unit pelindung revetment dengan menggunakan unit lapis pelindung berbentuk BPPT-Lock. Penelitian ini menggunakan metode eksperimen uji model fisik dengan sudut kemiringan 1:2, variasi tinggi gelombang (Hs), periode gelombang (Tp), dan variasi elevasi muka air. Adapun elevasi muka air yang digunakan yaitu 38 cm, 35 cm, dan 33 cm. Parameter yang digunakan dalam penelitian ini adalah kedalaman relative (D/Hs), angka stabilitas (Hs/ΔDn), wave steepness (Hs/gT^2), dan presentase kerusakan. Hasil penelitian ini menunjukan bahwa pada kedalaman HWL 38 cm memiliki stabilitas yang paling rendah dibandingkan dengan MSL 35 dan kedalaman LWL 33 cm memiliki stabilitas tertinggi. Pada kedalaman HWL 38 cm dengan tinggi gelombang tertinggi Hs = 16 cm diperoleh presentase kerusakan tertinggi sebesar 3,58%, sedangkan pada kedalaman MSL 35 cm dan LWL 33 cm dengan tinggi gelombang yang sama yaitu Hs = 16 cm diperoleh kerusakan tertinggi masing masing sebesar 1,69% dan 1,13%.
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Revetment is one type of beach protection structure limited towave or current forces. Theencanaation of the revetment structure needs to be considered the determination of the dominant load that will later be received by the structure. In revetment composed of armour units basically, the armour unit cannot be stable in withstanding the wave force, therefore its size and shape must be planned to remain stable. In this study, an analysis of the stability of the revetment protective unit was conducted using a protective layer unit in the form of BPPT-Lock. The study used a method of experimental physical model testing with a slope angle of 1:2, variations in wave height (Hs), wave periods (Tp), and variations in water level elevation. The elevation of the water level usednis 38 cm, 35 cm, and 33 cm. The parameters used in this study are relative depth (D / Hs), stabilitas number (Hs / ΔDn), wave steepness (Hs / g),T^2 and percentage of damage. The results of this study showed that at the depth of HWL 38 cm has the lowest stability compared to MSL 35 and the depth of LWL 33 cm has the highest stability. At the depth of HWL 38 cm with the highest wave height Hs = 16 cm obtained the highest percentage of damage of 3.58%, while at the depth of MSL 35 cm and LWL 33 cm with the same wave height that is Hs = 16 cm obtained the highest damage of 1.69% and 1.13% respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	BPPT-Lock, Model fisik, Revetment, Stabilitas, Physical model, Stability
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC203.5 Coastal engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Dwi Rizkha Yunia Pratiwi
Date Deposited:	31 Jan 2022 06:22
Last Modified:	01 Nov 2022 04:34
URI:	http://repository.its.ac.id/id/eprint/92589

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