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Subuh Tugiono
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Civil Engineering, Building, Construction & Architecture

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Analisis Sedimentasi Di Check Dam Study Kasus : Sungai Air Anak dan Sungai Talang Bandung Desa Talang Bandung, Kecamatan Sumber Jaya, Kabupaten Lampung Barat Holong Togatorop; Dyah I Kusumastuti; Subuh Tugiono
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

The river is a source of water that is accommodating and drain the water and material ingredientsbrought from the upstream. Problems which often occur in the upstream region is land erosioncausing sedimentation. The purpose of this study is: to determine the sediment rate and tocalculate filling time check dam of Air Anak River and Talang Bandung river.The location of this research is in the Air anak watershed and Talang Bandung watershed, SumberJaya Districts, Lampung Barat. Data needed in this research is suspended load sediment data,rainfall data, and water level data. The method used in this study is the prediction modelparametric approach to Universal Soil Loss Equation (USLE), measured sediment analysis,analysis of check dam age.From the analysis using USLE method it is found that the amount of sedimentation Air AnakWatershed is 3.306.3091 tons / year and sedimentation Talang Bandung Watershed is 6.913.3709tons / year. While the magnitude of the measured sediment sample is for the Air Anak Watershed is4.447.3193 tons / year with the sedimentation rate is 4.043.0175 tons / year and the amount ofsedimentation for Talang Bandung Watershed is 13.501.3716 tons / year with a sedimentation rateis 12 273 , 9742 tons / year. From the research results it can be known the age of check dams forAir Anak Watershed is 148 days and Talang Bandung Watershed is 73 days.Keywords: sedimentation, Air Anak watershed, Talang Bandung watershed, USLE methode
Analisis Kinerja Redaman Gelombang pada Breakwater Tenggelam Tipe Berlubang Dengan Pemodelan Fisik 2D Ivana Aprili Andika; Subuh Tugiono; Ahmad Zakaria; Endro P. Wahono
Jurnal Rekayasa Sipil dan Desain Vol 9, No 1 (2021): Edisi Maret 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Loss of land due to coastal erosion that occurs naturally by wave abrasion. Therefore, to protect the coast from erosion or other matters, a breakwater is needed which destroys the energy of the waves before reaching the shore. This is the background of the author in taking the title of the thesis about the Performance Analysis of Wave Attenuation in the Hollow Type Breakwater Submerged Type 2-D Physical Modeling. The variables used in this study were incident wave height (Ho), calm water level (ds), and breakwater type. The results of this study indicate that the damping coefficient (Cr) was obtained using a sinking breakwater without a hole with a calm water level (ds) of 2 cm of 0.479 which is the most effective damping produced in an experiment using a breakwater that is free from calm water surface (ds). 2 cm. The wave attenuation obtained from the wave defraction test using 2 types of breakwaters resulted that the breakwater without the damping hole was greater than using a perforated breakwater.
Studi Refleksi Gelombang Menggunakan Model Breakwater Tipe Dinding Berpori dengan Pemodelan Fisik 2-D didit kuswadi kuswadi; Subuh Tugiono; Endro Praseyto Wahono; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 10, No 2 (2022): Edisi Juni 2022
Publisher : Jurnal Rekayasa Sipil dan Desain

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Pemecah gelombang mempunyai fungsi untuk mereduksi gelombang dan melindungi garis pantaidari hamparan ombak. Gelombang yang merambak mengenai suatu bangunan pemecahgelombang, sebagian energinya akan diteruskan (transmisi), sebagian energinya dipantulkan(refleksi), dan sebagian energinya akan dihancurkan (disipasi). Hal tersebut melatar belakangipenelitian “Studi Refleksi Menggunakan Model Breakwater Tipe Dinding Berpori denganPemodelan Fisik 2-D”. Variabel yang digunakan pada penelitian ini adalah, Tinggi gelombangdatang (Hi), Tinggi gelombang pantul (Hr), Ketinggian muka air tenang (d), Panjang gelombang(L), Koefisien Refleksi (Kr). Hubungan koefisien korelasi dan determinasi model breakwater yangdihasilkan berada pada range 59%-79% dan termasuk hubungan yang baik. Data yang dihasilkanyaitu berupa hubungan antara luasan lubang dengan koefisien refleksi yang dimana kofisienrefleksi terbesar dan terkecil dihasilkan pada model empat dan satu dengan angka kr, 0,3436 dan0,2373.
Studi Transmisi Gelombang Dengan Model Cylinder Concrete (Buis Beton) Breakwater Tenggelam Dengan Permodelan Fisik 2D Lodewick Manurung; Subuh Tugiono; Ahmad Zakaria; Ofik Taufik Purwadi
Jurnal Rekayasa Sipil dan Desain Vol 10, No 1 (2022): Edisi Maret 2022
Publisher : Jurnal Rekayasa Sipil dan Desain

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One way to prevent damage caused by sea waves is to build a breakwater to reduce wave energy before it reaches the coast. In making the breakwater model the author chose to make a breakwater model with a concrete cylinder because it can be obtained easily. The research data obtained wave height (H), wavelength (L), and wave period (T). From the research data obtained, it can be made a table of incident wave height (H0), transmission wave height (Ht), and wave transmission coefficient (Kt). In this study, 12 models were used, namely 4 breakwater devices with different breakwater widths (lb), and in each breakwater device using 3 heights of still water level clearance or ds (2 cm, 4 cm, and 6 cm). Based on the research, the smallest transmission coefficient value occurs in the longest lb with ds of 2 cm, which is 0.3567 and the largest transmission coefficient occurs in the shortest lb with ds of 6 cm, which is 0.7190. The biggest change in wavelength occurred in the longest lb with ds 2 cm, which was 21.57% and the smallest change occurred in the shortest lb with ds 6 cm, which was 9.23%. The biggest change in wave propagation speed occurred in the longest lb with ds 2 cm, which was 20.14% and the smallest change occurred in the shortest lb with ds 6 cm, which was 5.93%.
Co-Authors Ahmad Zakaria Annika Lukitawati Arif Dinaryoko didit kuswadi kuswadi Dwijoko Winarno Dyah I Kusumastuti Dyah Indriana Kusumastuti Endro Prasetyo Wahono Fanny Prawaka Holong Togatorop Ibnu Tuhu Pangestu Ivana Aprili Andika Lodewick Manurung Maulana Yusuf Novitasari Novitasari Ofik Taufik Purwadi Ofik Taupik Purwadi Riyo Ardi Yansyah Rizqi Kurniawan Robby Firza Aditya Very Dwiyanto