Article Per Year (5 Year)
p-Index From 2019 - 2024
1.757
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Teknik Sipil Jurnal Spektran Bumi Lestari Prosiding Seminar Nasional MIPA Paduraksa: Jurnal Teknik Sipil Universitas Warmadewa BULETIN FISIKA Simposium II UNIID 2017 PRATAMA WIDYA : JURNAL PENDIDIKAN ANAK USIA DINI International Journal of Engineering and Emerging Technology
I Wayan Redana
Program Studi Magister Teknik Sipil Universitas Udayana
Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

Published : 22 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 22 Documents
Search

 1   2   3 
ANALISIS MITIGASI POTENSI LIKUIFAKSI (STUDI KASUS : PROYEK PEMBANGKIT LISTRIK TENAGA GAS DAN UAP LOMBOK, NUSA TENGGARA BARAT) Daniel Yudha Prayoga; I Wayan Redana; Annisa Maria Hidayati
JURNAL SPEKTRAN Vol 9 No 1 (2021)
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRAN.2021.v09.i01.p06

Abstract

Likuifaksi memiliki dampak terhadap pondasi karena dapat mereduksi nilai daya dukung aksial dan lateral yang akibatnya akan menyebabkan kegagalan infrastruktur. Proyek PLTGU Lombok dipilih menjadi daerah studi karena daerah tersebut diprediksi memiliki potensi likuifaksi. Pada area building, sistem pondasi yang direncanakan adalah tiang pancang. Area tersebut memiliki potensi likuifaksi di lapisan tanah kedalaman berkisar antara 2 sampai 30 meter. Penelitian ini membahas juga perubahan konfigurasi pondasi tiang yang digunakan sebelum dan sesudah likuifaksi. Untuk alternatif mitigasi likuifaksi, dianalisis perbaikan tanah dengan menggunakan stone column yang dapat meningkatkan kuat geser tanah. Analisis potensi likuifaksi dilakukan dengan metode tsuchida chart dan NCEER, sedangkan metode analisis daya dukung tiang tunggal menggunakan Software LPILE v5.0 dan analisis untuk menentukan konfigurasi tiang kelompok menggunakan Software GROUP v8.0. Saat kondisi likuifaksi, hasil penelitian menunjukan daya dukung aksial tekan tidak mengalami reduksi dikarenakan ujung tiang tertanam pada lapisan tanah keras sehingga daya dukung aksial tekan telah mencapai kapasitas maksimumnya. Daya dukung aksial tarik mengalami reduksi berkisar 1 hingga 47%. Daya dukung lateral mengalami reduksi berkisar 0 hingga 48%. Pada analisis daya dukung tiang grup, perbedaan jumlah pile yang diperlukan dengan kondisi sebelum dan setelah likuifaksi cukup signifikan. Jumlah tiang yang diperlukan ketika kondisi sebelum likuifaksi adalah 121 tiang dengan panjang tiang 30 m sedangkan jumlah tiang yang diperlukan untuk kondisi setelah terjadi likuifaksi adalah 169 tiang dengan panjang tiang 30 m. Untuk area non building, perbaikan tanah yang cocok pada lokasi studi adalah stone column dengan diameter 0.6 m, spasi 0.7 m, dan pola segitiga.
ANALISIS KEAMANAN LERENG BENDUNGAN UTAMA PADA BENDUNGAN BENEL DI KABUPATEN JEMBRANA I G. N. Putu Dharmayasa; I W. Redana; Tjok Gde Suwarsa Putra
JURNAL SPEKTRAN Vol. 2, No.2, Juli 2014
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (714.213 KB) | DOI: 10.24843/SPEKTRAN.2014.v02.i02.p09

Abstract

Development of dam very important for community surrounding the dam. To maintain that the benefits can be continued, it is necessary to review whether the safety of dams already meet the expected requirements. Dam safety to be reviewed when the dam was built and when the dam operating at this time. Security conditions associated with changes in water level on the upstream dam that affects the seepage on the body of dam and seepage under the dam. The water level also affects the slope of the dam when the dam has been operating.  Evaluation of the safety of the dam was conducted on Benel dam which located in Melaya District, Jembrana Regency, Bali Province. The results of the calculation of seepage (q) in the dam body with SEEP/W and flownet shows that, seepage discharge (q) which passes through under the dam and the body of dam is less than 1% (4.9206 m3/second) against the average flood discharge, so it has met the security requirements. Dam safety factor calculations without seismic load and with seismic load, for upstream slope and downstream slope when the dam was constructed,  when operating with flood water level,  when operating in the rainy season (normal water level),  when operating in the dry season (minimum water level) and with rapid draw down condition, with SLOPE/W and the Bishop method, the safety factor obtained more than minimum requirement by RSNI M-03-2002.
UJI PLATE LOADING TERHADAP DAYA DUKUNG DAN PENURUNAN PADA PONDASI TELAPAK DENGAN DAN TANPA MENGGUNAKAN GEOTEKSTIL DI ATAS TANAH LEMPUNG I Wayan Redana; Anissa Maria Hidayati; A.A.N. Dharma Paramartha
JURNAL SPEKTRAN Vol 8 No 2 (2020): VOL. 8 NO. 2, JULI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK Pelaksanaan uji plate loading dilakukan di laboratorium pada pondasi ukuran 10 cm x 10 cm dan 20 cm x 20 cm yang bertujuan untuk mengestimasi daya dukung dan penurunan pondasi telapak dengan atau tanpa perkuatan geotekstil diatas tanah lempung. Daya dukung pondasi telapak diestimasi dengan memakai rumus Terzaghi, Meyerhof, dan menggunakan program Plaxis 2D. Peralatan dan bahan yang digunakan adalah box dengan ukuran panjang (P)=1.5 m, lebar (L)= 1.5 m dan tinggi (T)= 1.0 m, untuk ketinggian tanah lempung dalam box adalah 60 cm. Alat yang digunakan berupa hydraulic jack & pump, test plate, pressure gauge (manometer), dial gauge, alat bantu dan timbangan. Pondasi diberikan beban secara bertahap sesuai dengan daya dukung Terzaghi dan Meyerhof. Pada pondasi dengan perkuatan geotekstil diberikan beban maksimum dua kali dari beban rencana dan penurunan yang terjadi dicatat secara bertahap. Hasil penelitian menunjukkan bahwa pada pondasi 20 cm x 20 cm, Df = 0 m tanpa perkuatan geotekstil, uji plate loading memberikan daya dukung dan penurunan lebih kecil dari Plaxis 2D sebesar 75% dan 400%. Hasil penelitian daya dukung dan penurunan pada pondasi 20 cm x 20 cm, Df = 0 m dengan perkuatan geotekstil, uji plate loading memberikan daya dukung dan penurunan lebih besar dari Plaxis 2D sebesar 29,8% dan penurunannya uji plate loading lebih kecil dari Plaxis 2D sebesar 41,6%.
DAYA DUKUNG PONDASI TELAPAK DENGAN PLATE LOADING TEST PADA TANAH PASIR Krisantos Ria Bela; I Wayan Redana; Anissa Maria Hidayati
JURNAL SPEKTRAN Vol 6 No 2 (2018): Vol. 6, No. 2, Juli 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.905 KB)

Abstract

ABSTRAK Plate Loading Test adalah salah satu pengujian yang dilakukan untuk mengukur kekuatan dan deformasi tanah, dan digunakan untuk mengetahui daya dukung tanah serta penurunannya terutama untuk pondasi dangkal. Nilai daya dukung, penurunan, dan angka keamanan (FS) yang diperoleh dari Plate Loading Test untuk pondasi 10 cm x 10 cm adalah 14.50 kN/m2, penurunannya adalah 0.000037 m. Sedangkan pada pondasi 20 cm x 20 cm, nilai daya dukungnya adalah 29.95 kN/m2, penurunannya adalah 0.000149 m. Dengan beban kerja sesuai beban ijin Terzaghi dengan angka keamanan (FS) = 2, maka uji Plate Loading Test pada pondasi 10 cm x 10 cm memberikan angka keamanan lebih besar dari 2 yaitu (FS) = 2.30 dan pada pondasi 20 cm x 20 cm memberikan angka keamanan lebih besar dari 2 yaitu (FS) = 2.38. Untuk Persentase perbandingan antara Plate Loading Test dengan Metode Terzaghi pada pondasi 10 cm x 10 cm, nilai daya dukungnya adalah 56.52 % dan penurunannya adalah 63.49 %. Sedangkan pada pondasi 20 cm x 20 cm, Persentase perbandingan daya dukungnya adalah 57.90 % dan penurunannya adalah 63.74 %. Untuk Persentase perbandingan antara Plate Loading Test dengan Metode Meyerhof pada pondasi 10 cm x 10 cm, nilai daya dukungnya adalah 54.83 % dan penurunannya adalah 62.07 %. Sedangkan pada pondasi 20 cm x 20 cm, Persentase perbandingan daya dukungnya adalah 56.26 % dan penurunannya adalah 62.32 %. Untuk Persentase perbandingan antara Plate Loading Test dengan Plaxis 2D pada pondasi 10 cm x 10 cm, nilai daya dukungnya adalah 56.52 %, dan penurunannya adalah 59.46 %. Untuk pondasi 20 cm x 20 cm, Persentase perbandingan daya dukungnya adalah 57.90 % dan penurunannya adalah 61.74 %.
DESAIN PONDASI TIANG RAKIT DENGAN METODE POULOS DAN SOFTWARE PLAXIS I Nyoman Sutarja; I Wayan Redana; I Made Putra Dwityagana
JURNAL SPEKTRAN Vol 7 No 1 (2019): Vol. 7, No.1, Januari 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (687.987 KB)

Abstract

DESIGN OF RAFT-PILE FOUNDATION BY POULOS METHOD AND SOFTWARE PLAXIS ABSTRACT In Bali, especially Kuta area there are many layers of soft soil with hard soil depth far from the surface of the land. Sufficient foundation design is required to avoid soil degradation. This research aims to produce alternative pole-raft foundation design using Poulos manual method and Plaxis software. Poulos manual method using trial and error method with variation dimension cross section of pile, pile length, and number of piles. The results of this study show the final design configuration of the alternative foundation of this raft pile has a thickness of 0.30 meters raft and 25x25 cm2 pile along the 7 meters with 20 pieces. From this ideal configuration obtained the calculation of soil yield calculation by Poulos method of 6,53 cm, while with Plaxis software of 6,92 cm. Percentage mobilization of ultimate capacity of pole system with Poulos method by 52%, while using Plaxis software 56,5%. The percentage of load borne by the pole system by Poulos method is 79,83%, while with Plaxis software 80,24%.
Model Penataan Lahan Penanggulangan Erosi Berbasis Masyarakat Di Kawasan Danau Batur I Made Nada; I Wayan Redana; I G B Sila Dharma; A A Gde Agung Yana
Bumi Lestari Journal of Environment Vol 18 No 1 (2018)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2018.v18.i01.p01

Abstract

Erosion control in the community-based Lake Batur area is directed to maintain the balance of Lake Batur. Erosion triggered by the pattern of management of agricultural lands less attention to aspects of soil and water conservation. The purpose of this research is; (1) to obtain a community-based erosion control model, (2) Land management Mapping on the edge of the lake, (3) erosion control strategy at the edge of the lake. This research field experiment and surpei, sampling is done by purposive sampling with amount of 64 sample. The socio-economic support data of the community was determined by 180 respondents in cluster sampling. Interviews and questionnaires are closed questions on a conventional scale. The characteristics of the lake were analyzed descriptive statistics using the SPSS tool. Land mapping is done by GPS method with GIS device. Predict erosion using the Universal Soil Loss Equation (USLE) Model, for sedimentation using the Stanford Sediment model. The analysis of the rate due to erosion, done by non linear regression analysis. The analysis shows that the settlement has an average of 115,85%, plantation 245,50% and sedimentation level 1,017,93 m3 / year. Sedimentation was tested on both sides with a 95% confidence level on the modeled sediment data. Conclusions to tackle erosion using a community-based Terracing Mekar land arrangement model that collaborates with elephant grass and vetiveria.
Menentukan Posisi Pengeboran Untuk Mendapatkan Air Yang Berkualitas Di Jalan Tunjung I Denpasar Barat Dengan Metode Geolistrik I Kadek Suardika; I Nengah Simpen; I Wayan Redana
BULETIN FISIKA Vol 18 No 2 (2017): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Investigation has been conducted on drilling point position to get clean water at Jalan Tunjung 1 Denpasar Barat. The investigation was carried out by geoelectric method using the Wenner configuration. The measurement data is processed by using Res2dev Software. From the resistivity data processing results obtained that the best position to get quality water is at position 8º33'43,76 "LS and 115º21'00,06" BT. The position of the aquifer lies at a depth of 16.25 meters. Laboratory test results for several parameters relating to water quality show values that meet the quality standard threshold in accordance with the provisions of Bali's Governor Regulation no. 8 Year 2007.
RE-VEGETASI TANAH VULKANIS TANDUS DENGAN AIR SUMUR I Nengah Simpen; I Nyoman Sutarpa Sutama; I Wayan Redana; Siti Zulaikah
Prosiding Seminar Nasional MIPA 2015: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2015
Publisher : Prosiding Seminar Nasional MIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstrak. Tanah vulkanis merupakan suatu perlapisan tanah yang terbentuk oleh hamparan material letusan gunung berapi saat meletus. Tanah vulkanis biasanya tandus. Perlu waktu yang lama bertahun-tahun dan bahkan sampai berpuluh-puluh tahun untuk menumbuhkan kembali vegetasi (re-vegetasi) di daerah ini. Untuk itu perlu dicari suatu cara agar pada tanah yang semula tandus dapat sesegera mungkin ditumbuhi tanam-tanaman, sehingga tanah vulkanis menjadi produktif. Melihat kondisinya yang seperti ini dapatlah dianalisa bahwa masalah utama pada daerah tersebut adalah air dan cara mengelolanya. Di sini diberikan salah satu contoh untuk mencari air pada daerah tanah vulkanis tandus yaitu dengan Metoda Geolistrik. Dari hasil yang didapat bahwa walaupun bagian atasnya berupa tanah vulkanik tandus, namun di bawahnya masih terpendam akuifer-akuifer yang dapat disadap airnya. Setelah airnya didapat, airnya mestinya dikelola sehngga dapat dipakai oleh hewan maupun tumbuhan. Simbiosis antara hewan dan tumbuhan dapat mempercepat proses re-vegetasi pada daerah vulkanis tandus. Sebagai hasil studi, dapat dilihat pada beberapa daerah di Kabupaten Karangasem Bali.Kata kunci: Re-vegetasi, Tanah vulkanis tandus, Metoda Geolistrik, Air sumur
DRILLING GROUNDWATER FOR RAW WATER IN SEMBIRAN VILLAGE,TEJAKULA DISTRICTS, BULELENG REGENCY Ketut Agus Karmadi; I Wayan Redana; I Nengah Simpen; Mawiti Infantri; Bambang Soenarto
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p14

Abstract

ABSTRACT- Water is an absolute necessity that must be met, both for drinking water and for irrigation. An alternative to meet the water needs other than rainwater or surface water, is by taking underground water by drilling deep wells. Sembiran Village is a village located in Tejakula District, Buleleng Regency, the village is a dry area that requires water, both for drinking water and for agriculture. Location of groundwater drilling including Tejakula groundwater basin. In order to achieve the above objectives, an effective and efficient groundwater drilling technique should be carried out considering that the area geologically has rocks dominated by volcanic lava rock which are the products of Mount Agung and Mount Buyan Beratan Purba. The method of drilling groundwater is carried out in stages starting from drilling a Pilot Hole with a diameter of 6 to 64 meters, followed by an enlargement of 8 ", 10" to 12 "drill holes to a depth of 64 meters. In the field of drilling work the Hydrolic Rotary System Method, Direct Circulation Rotary Drilling is used and for the removal of cutting / dirt mud Fludia is used. The equipment used for drilling is rotary / skid mounted drilling machines with a capacity of up to ± 150.0-200.0 meters, equipped with equipment such as: mud pumps, a series of equipment that cannot be separated from one another. For well logging an Electrical logger is used for geophysical wellbore investigations. For the work of washing wells using compressor and other supporting equipment. Pumping the test uses a submersible pump that has a minimum discharge capability of 10 lt / sec and a maximum of 20 lt / sec. The results of direct observations and measurements of the physical parameters of the Sembiran Village Drilling Well (SEM-5) contain TDS = 219.; PH = 7.0. Chemically, Iron (Fe) = 0.001 mg/ltr; Arsenic (Ar) = 0.067 mg/ltr; Availability (CACO3) = 56.4 mg/ltr; Chloride (Cl-) = 91.6 mg/ltr; Nitrate (N) = 0.013 mg/ltr; Sulfate (SiO4) = 1.88 mg); Lead (Pb) = 0 mg/ltr; organic matter (KMnO4) = 0.34 mg/ltr, so the Drilling wells (SEM-5) meet clean water quality standards based on the Regulation of the Minister of Health of the Republic of Indonesia Number 492 / Menkes / Per / IV / 2010. Discharge obtained from pumping test results at SEM-5 wells is 20.47 liters/sec with surface water level(swl) = 23.60 m, and the position of the pump is placed at 42 m from the ground surface.
ANALYSIS EFFECT OF LEACHATE ON SANDY CLAY SOIL I Nyoman Aribudiman; I Wayan Redana; Kadek Diana Harmayani; Yenni Ciawi
International Journal of Engineering and Emerging Technology Vol 4 No 1 (2019): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Soil as a place of establishment of building can be very vulnerable to experiencing changes, especially by the influence of surrounding environment. Leachate has definition of waste water that formed from waste seepage water roomates is Often found in a dumpsite. The difference in the effect of leachate levels on soil characteristics soil changes may results. The aim of the research is to know the effect of leachate on soil characteristic in landfill Temesi, Gianyar. This is at the sampling site Because there is untreated leachate pollutes soil roomates around dumpsite. In testing the soil characteristics in the form of physical properties, mechanical properties, and soil permeability, the sample collected from the landfill leachate Temesi and determined by level variations with a percentage of 0%, 20%, 40%, 60%, 80% and 100% to water added to sandy clay soil with Atterberg limits test to Obtain Data on soil physical properties in the form of liquid limit values, plastic limits, and shrinkage limits. The CD (Consolidated Drained) triaxial tests to Obtain Data on soil mechanical properties in the form of cohesion values (c) and internal friction angle (?). The test was Carried at Soil Mechanics Laboratory of the Faculty of Engineering Udayana University. The result of Atterberg limits test with 0% to 100% leachate Increased by 39.91% to 57.18% for liquid limit, 22.81% to 43.63% for plastic limit, and 34.23% to 50.41% for shrinkage limit with average increase of 8.65% for liquid limit , 18:26% for plastic limit, and 9:45% for shrinkage limit. For the result of CD triaxial tests with 0% to 100% leachate Decreased by 5.6 ° to 12.2 ° internal friction angle (?) and 0. 349 kg/cm2 to 0249 kg/cm2 for cohesion values (c) with average decline 10.82% for internal friction angle (?) and 5.73% for cohesion value (c). The permeability value with 0% to 100% leachate Decreased by 0.000163 cm/seconds to 0.000075 cm/seconds with average decline 10.79%.
Co-Authors A.A.N. Dharma Paramartha Anissa Maria Hidayati Bambang Soenarto Daniel Yudha Prayoga I Gusti Ngurah Putu Dharmayasa I Gusti Ngurah Wardana I Kadek Suardika I Ketut Swijana I Made Nada I Made Putra Dwityagana I Made Sastra Wibawa I Nengah Simpen I Nym. G. Santiawan I Nyoman Aribudiman I Nyoman Sutarja I NYOMAN SUTARPA SUTAMA I P. Alit Suthanaya I Wayan Budiastra I Wayan Sujahtra Ida Bagus Putu Adnyana Ika Umratul Ika Umratul, Ika Jamhari Jamhari Kadek Diana Harmayani Ketut Agus Karmadi Krisantos Ria Bela Mawiti Infantri Mawiti Infantri Yekti Ngakan Made Anom Wiryasa Ni Nyoman Pujianiki Putu Doddy Heka Ardana Ririn Hartini Siti Zulaikah Tjok Gde Suwarsa Putra Tjokorda Gde Suwarsa Putra Yana, Anak Agung Gde Agung Yenni Ciawi