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All Journal Rekayasa Sipil Teknisia Simposium II UNIID 2017 Unisia
Edy Purwanto
Universitas Islam Indonesia
Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Social Sciences

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EVALUASI PONDASI MESIN DENGAN TIANG PANCANG AKIBAT GETARAN RECIPROCATING ENGINE (Studi Kasus PLTU UBOH 3 Banten) Muhammad Rifqi Abdurrozak; Anwar Purnomo; Edy Purwanto
Simposium II UNIID 2017 Vol 2 (2017)
Publisher : Simposium II UNIID 2017

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.456 KB)

Abstract

Pondasi yang menopang mesin dipengaruhi oleh beban statis yang berasal dari mesin dan pile cap serta getaran yang disebabkan dari gaya dinamis yang terjadi pada saat mesin beroperasi. Getaran yang berlebihan dapat menyebabkan mesin rusak dan memberikan efek yang merugikan pada struktur pondasi atau orang yang bekerja di dekat mesin tersebut. secara keseluruhan akan mengurangi tingkat produktivitas dari mesin dan pekerja. Hasil dari penelitian di PLTU 3 Uboh Banten, berat total mesin FD fan dan pondasi mesin 861,9794 kN masih aman terhadap kapasitas dukung tiang pancang. Pada pembebanan dinamik saat mesin beroperasi nilai amplitudo getaran vertikal pada unit 1 sebesar 0,09886 mm dan pada unit 2 sebesar 0,09371 mm, kemudian akibat pembebanan getaran horizontal nilai amplitudo di unit 1 sebesar 0,05678 mm dan pada unit 2 sebesar 0,2017 mm. Perbedaan nilai amplitudo tersebut dipengaruhi oleh parameter tanah yaitu modulus geser, semakin besar nilai modulus gesernya maka amplitudo yang terjadi semakin kecil sedangkan untuk pengaruh frekuensi putar mesin berbanding lurus dengan amplitudo dimana semakin besar frekuensi putar mesin maka semakin besar juga amplitdo yang terjadi.
ANALISIS POTENSI LIKUIFAKSI PADA PASIR VULKANIK DI PANTAI GLAGAH KULONPROGO BERDASARKAN DATA N-SPT Hanindya Kusuma Artati; Widodo Pawirodikromo; Edy Purwanto
TEKNISIA Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art6

Abstract

One of the most causes of damage to structures during earthquake is a liquefaction. Liquefaction happened in a loose sand which saturated under earthquake shaking.  Earthquake shaking will cause cyclic loading to the surface of the ground which potential for occurrence of liquefaction. The liquefaction phenomenon is a soil behavior under cyclic loads that occurs in just a few moments. Due to the short cyclic load, the soil mass suddenly changes from a solid limit to a liquid limit or has a main consistency such as liquid. Liquefaction events during an earthquake can be characterized by the presence of ground movement in the horizontal direction, seepage water out from fracture of the ground, movement of sloping or descending buildings, displacement of ground advance, and landslides. This study took a case study in Glagah Beach at Kulonprogo Regency. That is beach areas which is a landform alongside a body water which consist of loose particles such as sand where Yogyakarta International Airport (YIA) is located. Analysis was carried out to determine the potential of liquefaction based N-SPT data using the Seed, Martin & Lysmer (1975).  Based on these data, The Cyclic Stress Ratio (CSR) value is calculated, which is the ratio between the average shear stress caused by the earthquake with the effective vertical stress in each layer and the value of the Cyclic Resistance Ratio (CRR), which is the amount of soil resistance to liquefaction. The analysis in the Kulonprogo Regency area is an area that is considered to require liquefaction. Analysis of liquefaction potential based on on N-SPT data with the Seed, Martin & Lysmer (1975) method on a 6,3 magnitude earthquake. The Result indicate the potential for liquefaction occurs up to a depth of 8,5 meters.
PERKERASAN BETON SEMEN Edy Purwanto
Unisia No. 2: Tahun X Triwulan II 1988
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/unisia.v0i2.5142

Abstract

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Alternatif Desain Perkerasan Jalan dan Perkuatan Lereng Longsor Asrul Saputra; Edy Purwanto; Miftahul Fauziah
Rekayasa Sipil Vol. 17 No. 2 (2023): Rekayasa Sipil Vol. 17 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2023.017.02.11

Abstract

This study aims to provide an alternative design for flexible pavement and slope reinforcemen. To simplify the analysis process, this research will use the Geo5 program, the Kenpave program, the Bina Marga 2017, the Fellenius method, and the Wedge method. The results of alternative 3 flexible pavement designs are AC-WC 4 cm, AC-BC 5 cm, AC Base 6 cm, and LFA Class A 40 cm, with a load repetition value of 2.363.985 ESAL until deformation damage occurs at a service life of 20 years. For the soil nailing slope reinforcement design, the safe factor value is 1.90 ≥ 1.30 for the Wedge method calculation, and the safety factor value is 1.34 ≥ 1.30 for the results of the Geo5 program.
Co-Authors Anwar Purnomo Asrul Saputra Hanindya Kusuma Artati Miftahul Fauziah Muhammad Rifqi Abdurrozak Widodo Pawirodikromo