Pengaruh Wave Steepness Terhadap Stabilitas Batu Pecah Pada Permukaan Cellular Cofferdam Akibat Gelombang Overtopping

Cahyono, Rony Dwi (2005) Pengaruh Wave Steepness Terhadap Stabilitas Batu Pecah Pada Permukaan Cellular Cofferdam Akibat Gelombang Overtopping. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

[img]
Preview
Text
4399100026-.pdf - Published Version

Download (14MB) | Preview

Abstract

Model fisik akibat wave steepness untuk breakwater tipe cellular co./fordam telah di uji. Model mempunyai dimensi dengan tinggi 53 em, diameter 50 em, Iebar 73 em dengan skala model 1 :40. Pengujian dilakukan untuk variabel yaitu berat batu (500 kg, 384 kg, 256 kg), tinggi gelombang (3,82 m, 3,21 m, 2,68 m), periode gelombang (20 s, 15 s, 12 s) dan elevasi struktur (1m di atas SWL, 0 m pada SWL dan -1, -2m di bawah SWL). Batu diletakkan pada puneak struktur untuk mengurangi serangan limpasan gelombang. Pencatatan dilakukan untuk wave steepness sebagai akibat serangan gelombang dan perpindahan batu yang mewakili stabilitas batu . Dari pereobaan menunjukkan bahwa kerusakan batu tertinggi pada struktur ada pada elevasi 0 pada SWL. Untuk batu 500 kg kerusakan di bawah 20 % terjadi pada semua wave steepness kecuali pada 0 m pada SWL. Untuk 256 -500 kg pada periode 20 detik stabilitas batu akibat wave steepness sangat stabil keeuali pada 0 m pada SWL dirnana kerusakan batu meneapai di atas 20% pada 0,00116. ============================================================ The physical model of wave steepness effect in breakwater cellular cofferdam is presented The model has dimension of 53 em height, 50 em diameter, 73 em width, as a result of 1: 40 model scale. Four variation of stone weight (500 kg, 384 kg, 256kg), wave height (3,82 m, 3,21 m 2,68 m, wave period (20 s, 15 s, 12 s) and structure elevation (1 m above SWL, 0 m at SWL and -1, -2 below SWL were used. The stone armour is placed in the top of the structure to reduce the incoming overtopping wave. The steepness of the incoming wave is recorded, as well as the displacement of the stone that representing stone stability. The experiment shows that the steeper incoming wave the highter damage resulted on the structure, especially at elevation 0 m. For 500 kg stone the damage below 20% at all wave steepness, for all elevation except 0 m at SWL. For 256- 500 kg at 20 s period, the stability is good at all wave steepness except 0 mat SWL in which 20 % stone damage occurs at 0,00116.

Item Type: Thesis (Undergraduate)
Additional Information: RSKE 627.24 Cah p
Uncontrolled Keywords: Stabilitas batu peeah, Prosentase Kerusakan, Wave Steepness, Cellular Cofferdam, Stone stability, Procentage of Damage, Wave Steepness, Cellular Cojfordam
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power.
Divisions: Faculty of Marine Technology > Ocean Engineering > (S1) Undergraduate Theses
Depositing User: ansi aflacha
Date Deposited: 12 Nov 2018 06:57
Last Modified: 12 Nov 2018 06:57
URI: http://repository.its.ac.id/id/eprint/59755

Actions (login required)

View Item View Item