Article Per Year (5 Year)
p-Index From 2021 - 2026
1.048
P-Index
This Author published in this journals
All Journal JURNAL SIPIL STATIK JURNAL ILMIAH MEDIA ENGINEERING TEKNO
Oktovian B. A. Sompie
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Engineering Languange, Linguistic, Communication & Media

Published : 29 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 29 Documents
Search

 1   2   3 
PENGARUH BAHAN CAMPURAN ARANG TEMPURUNG TERHADAP KONSOLIDASI SEKUNDER PADA LEMPUNG EKSPANSIF Karaseran, Azzyzaro Junior; Sompie, Oktovian B. A.; Balamba, Sjachrul
JURNAL SIPIL STATIK Vol 3, No 8 (2015): JURNAL SIPIL STATIK
Publisher : JURNAL SIPIL STATIK

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

Abstract

Tanah lempung Ekspansif merupakan jenis tanah berbutir halus ukuran kolodial, yang terbentuk dari mineral-mineral ekspansif. Disamping mempunyai sifat-sifat umum seperti halnya tanah lempung lainnya, juga memiliki sifat khas, yakni kandungan mineral ekspansif mempunyai kapasitas pertukaran ion yang tinggi, mengakibatkan lempung ekspansif memiliki potensi kembang susut apabila terjadi peningkatan dan pengurangan kadar air. Penanggulangannya dapat dilakukan dengan stabilisasi, antara lain dengan penambahan arang tempurung. Penambahan arang tempurung dapat mengurangi swelling dari tanah karena mereduksi indeks plastis tanah. Penggunaan arang tempurung sebagai material stabilisasi dapat menghemat biaya transportasi karena mudah diperoleh. Berdasarkan hasil penelitian dilaboratorium, akibat penambahan kadar arang tempurung  4%, 6%, 8% dan 10%  pada tanah, nilai parameter konsolidasi; Cc, Cr, dan Cα berkurang sedangkan nilai Cv bertambah. Kata kunci : Lempung Ekspansif, Arang Tempurung, Parameter Konsolidasi
REKAYASA GEOTEKNIK DALAM DESAIN EMBUNG DOUDSENDOW DIATAS LAPISAN TANAH LUNAK Nangoy, Stephanie M. F.; Sompie, Oktovian B. A.; Elisabeth, Lintong
JURNAL ILMIAH MEDIA ENGINEERING Vol 3, No 3 (2013): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

Pemilihan tahapan konstruksi pada dam timbunan tanah (Earthfill Dam) dengan teknik yang efektif dilakukan diatas tanah dasar lunak (soft subsoil) dimana konsolidasi dapat menyebabkan penurunan akibat beban. Makalah ini menunjukkan studi perilaku dan stabilitas embung Doudsendow dalam tahapan konstruksi diatas lapisan tanah dasar lunak menggunakan metode elemen batas (Finite Elemen Methods,FEM) dengan bantuan program Plaxis. Perilaku tanah diselidiki dilaboratorium serta nilai dari tiap perubahan tahapan dievaluasi. Pendekatan metode numerik dengan program Plaxis digunakan sebagai pemecahan praktis masalah geoteknik.Kata kunci: Rekayasa geoteknik, dam timbunan tanah
PENAMBAHAN CAMPURAN BENTONIT DAN KAOLIN PADA TANAH PASIR TERHADAP KOEFISIEN PERMEABILITAS DENGAN KONDISI PLASTISITAS BERBEDA PADA TINGKAT KEPADATAN MAKSIMUM Jembise, Ronald Agus; Sompie, Oktovian B. A.; Jansen, Freddy
JURNAL ILMIAH MEDIA ENGINEERING Vol 4, No 2 (2014): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

Permeabilitas tanah sangat mempengaruhi biaya serta kerumitan dari sekian banyak proses pelaksanaan serta purna konstruksi. Hal ini dipengaruhi oleh beberapa faktor, diantaranya struktur dan tekstur tanah serta unsur organik yang terkandung di dalamnya. Penelitian ini bertujuan untuk mengetahui hubungan antara permeabilitas yang dihasilkan oleh kondisi kepadatan maksimum dengan indeks plastisitas tertentu. Penelitian ini dilaksanakan dilaboratorium, dengan menggunakan alat pengujian Standard Proctor Compaction test untuk pemadatan tanah dan alat permeabilitas standar untuk pengujian permeabilitas. Pengujian dilakukan dengan 5 variasi campuran tanah yaitu sampel 1 (MX-1) 80% pasir – 0% bentonit – 20% kaolin,  sampel 2 (MX-2) 80% pasir – 5% bentonit – 15% kaolin, sampel 3 (MX-3) 80% pasir – 10% bentonit – 10% kaolin, sampel 4 (MX-4) 80% pasir – 15% bentonit – 5% kaolin dan sampel 5 (MX-5) 80% pasir – 20% bentonit – 0% kaolin. Hasil penelitian menunjukkan bahwa dengan meningkatnya kadar bentonit dalam tanah campuran dan menurunnya kadar kaolin maka nilai indeks plastisitas akan meningkat sedangkan nilai kepadatan maksimum dan nilai koefisien permeabilitas tanah akan menurun. Besarnya nilai Indeks plastisitas tanah campuran 1 sampai 5 adalah sebagai berikut, 7.15%, 13.49%, 23.53%, 32.04% dan 43.10%. Besarnya nilai kepadatan maksimum tanah adalah sebagai berikut, 1,53 gram/cm3, 1.45 gram/cm3, 1,40 gram/cm3, 1,37 gram/cm3 d dan 1.32 gram/cm3. Dan besarnya nilai koefisien permeabilitas adalah sebagai berikut 3,26 x 10-7 cm/det,  4,37 x 10-8 cm/det, 4,07 x 10-8 cm/det, 3.59 x 10 -9 cm/det dan 9,68 x 10 -10 cm/det. Kata Kunci: Koefisien Permeabilitas, Indeks Plastisitas, Kepadatan Maksimum.
REKAYASA GEOTEKNIK DALAM DISAIN DAM TIMBUNAN TANAH Sompie, Oktovian B. A.
JURNAL ILMIAH MEDIA ENGINEERING Vol 1, No 2 (2011): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

Dam dari timbunan tanah (earthfill dam) membutuhkan lapisan tanah dasar yang relatif baik, dimana konsolidasi dapat menyebabkan penurunan akibat beban. Dua masalah yang dihadapi dari proses konsolidasi, yaitu besarnya penurunan dan jangka waktu yang diperlukan untuk mencapai penurunan maksimum. Tahapan konstruksi ditentukan dengan teknik yang efektif konstruksi earthfill dam pada lapisan tanah lempung lunak. Makalah ini menunjukan studi perilaku dan stabilitasearthfill dam dalam tahapan konstruksi menggunakan metode elemen hingga (FEM). Perilaku tegangan-regangan dan tegangan air pori diselidiki untuk setiap tahapan konstruksi dam. Perkembangan dan nilai dievaluasi terhadap mekanisme keruntuhan dan faktor keamanan. Pendekatan metode numerik sangat cocok dalam hal diatas sebagai pemecahan praktis masalah geoteknik.Kata kunci: Rekayasa Geoteknik, dam dan timbunan tanah
ANALISIS TEGANGAN-REGANGAN, TEKANAN AIR PORI DAN STABILITAS MODEL DAM TIMBUNAN TANAH Sompie, Oktovian B. A.; Pontororing, Christian
JURNAL ILMIAH MEDIA ENGINEERING Vol 4, No 4 (2014): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

The need of dam is considered necessary for an area, the residential area located in the Watershed (DAS) experience frequent flooding when the river water is at high water level. That is why we need to learn the behavior of the soil embankment dams associated with the stress-strain, pore water pressure and stability to obtain a soil embankment dam design is safe from collapse or failure. Various ways can be done to analyze it, one of which program is to make a model dam with a calculation using the program Plaxis. In modeling this dam soil was taken from the site Doloduo II, Kotamobagu, namely silty clay then modeled in an experimental box. Dams were given treatment in the form of the addition of water to a certain height. Dam stability is observed with pore water pressure and other things that happened in the modeling, then compared with analysis using Plaxis 3D Foundation program is made in three calculation process. Keyword: Modeling of dam, Stress-Strain, Pore Water Pressure, Program Plaxis.
BEARING CAPACITY OF CONE SHAPED FOUNDATIONS WITH SEMI ANGLE β VARIATION AND DIFFERENT ROUGHNESS Moningka, George; Sompie, Oktovian B. A.; Sumampouw, J. A. R.
JURNAL ILMIAH MEDIA ENGINEERING Vol 3, No 2 (2013): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

A properly designed foundation throughout the soil without overstressing the soil. Overstressing the soil can result in either excessive settlement or shear failure of the soil, both on which cause damage to the structure; thus, geotechnical and structural engineers who design foundations must evaluate the bearing capacity of soils. Depending on the structure and soil encountered, various types of foundation are used. The problem of bearing capacity of cone shaped foundation with semi angle β variation; 15°, 30°, 45°, 60°, 90° and different roughness; perfectly smooth and perfectly rough, in homogeneous soil and subjected to axial load, is analyzed on the basis of plastic theory. The soil is considered as a perfectly rigid plastic material obeying the MOHR-COULOMB failure criterion. An experimental investigation was made to obtain penetration resistance for estimating the ultimate bearing capacity of cone foundation with various semi angle β and different roughness in sands (c = 0) and clays (ɸ = 0). The Mangatasik Dry Sand and Wenwin Soft Clay were used in this tests. The experimental values were found to agree well with theoretical bearing capacity of cone shaped foundations.Keywords : bearing capacity, cone shaped foundation, semi angle β, roughness, sand, clay.
ANALISA KONSOLIDASI DAN KESTABILAN LERENG BENDUNG KOSINGGOLAN Imbar, Sesty E. J.; Sompie, Oktovian B. A.
JURNAL ILMIAH MEDIA ENGINEERING Vol 3, No 3 (2013): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

Peningkatan pembangunan dan pertumbuhan ekonomi khususnya pada daerah irigasi kosinggolan mensyaratkan kebutuhan konstruksi bendung yang mampu menampung cadangan air lebih banyak. Kesuksesan pembangunan konstruksi dan pegoperasian dam membutuhkan evaluasi yang komperhensif dalam desain dam sebelum dimulainya proses konstruksi. Penelitian ini bertujuan untuk menganalisa faktor yang bisa mengakibatkan instability pada bendung serta analisa perilaku bendung Kosinggolan pada kondisi-kondisi kritis dengan memperhitungkan faktor keamanan bendung. Proses Konsolidasi merupakan faktor penting yang menjadi tujuan analisa karena bisa mengakibatkan penurunan yang sangat besar. Penelitian laboratorium dilakukan untuk mendapatkan sifat-sifat fisik dan mekanik tanah serta koefisien konsolidasi. Selanjutnya analisa dilakukan dengan menggunakan metode FEM (finite element method). Konsep model 2-D dari earth-fill dam disimulasikan pada program komputer Plaxis. Earthfill dam Kosinggolan model 2-D ini dapat diklasifikasikan stabil dimana faktor keamanan yang diperoleh berada pada range 1,52-1,59, diatas nilai minimum yang disyaratkan.Kata kunci: Earth-fill dam, konsolidasi, kestabilan lereng, metode FEM, Plaxis, faktor keamanan.
ANALISIS GEOTEKNIK TANAH LEMPUNG TERHADAP PENAMBAHAN LIMBAH GYPSUM Landangkasiang, Febiola Nasrani; Sompie, Oktovian B. A.; Sumampouw, Joseph E. R.
JURNAL SIPIL STATIK Vol 8, No 2 (2020): JURNAL SIPIL STATIK
Publisher : JURNAL SIPIL STATIK

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

Abstract

Tanah lempung merupakan merupakan jenis tanah dengan kondisi daya dukung dan kuat geser yang rendah, diperlukan stabilitas perbaikan tanah secara kimiawi. Parameter yang dapat diketahui apakah tanah tersebut daya dukungnya baik atau tidak bisa dilihat dari nilai CBR dan nilai kuat geser. Penelitian ini menggunakan limbah gypsum sebagai bahan stabilisasi, yaitu dengan menambahkan limbah gypsum dengan variasi campuran 5%, 10%, 15%, dan 20% gypsum terhadap berat contoh tanah. Tujuannya untuk meningkatkan nilai CBR dan kuat geser pada tanah lempung. Berdasarkan hasil penelitian, untuk nilai CBR pada kondisi tanah asli sebesar 1,52% dan terus mengalami peningkatan hingga pada campuran 10% sebesar 3.05% kemudian kembali turun pada campuran 15% menjadi 2.38% dan pada campuran 20% menjadi 1.91%. Untuk nilai tegangan geser pada kondisi tanah asli sebesar 3.152 t/m2 dan terus mengalami peningkatan hingga pada campuran 15% sebesar 6.174 t/m2 kemudian kembali turun pada campuran 20% menjadi 5.088 t/m2. Dapat disimpulkan bahwa untuk nilai CBR maksimum terjadi pada sampel tanah yang dicampur dengan limbah gypsum dengan kadar campuran 10%, sedangkan untuk nilai tegangan geser maksimum berada pada kadar campuran 15%. Kata kunci: CBR, gypsum, lempung, stabilitas, tegangan geser
ANALISA KESTABILAN BENDUNGAN LOLAK 1 Lontoh, Rheky Julistian; Manoppo, Fabian J.; Sompie, Oktovian B. A.
JURNAL SIPIL STATIK Vol 8, No 2 (2020): JURNAL SIPIL STATIK
Publisher : JURNAL SIPIL STATIK

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

Abstract

In order to support the national water security program, which is the fulfillment of raw water for households, cities and industries, and also for the efforts to reduce water damage due to flood in Bolaang Mongondow Regency, especially in Lolak Sub district, its carried out by construction of the Lolak Dam.In addition for many of the benefits that can be obtained by the construction of Lolak dam, there are also potential problems that can be caused by the impact of the dam construction that is a potential failure on the dam itself. The potential for dam failure in general can occur due to the influence of hydrology and hydraulics, due to the influence of water seepage and due to the influence of the structure.Through this paper, the author has analyzed in terms of the calculation of potential dam failure caused by the influence of hydrology and hydraulics, water seepage, and failure due to structural influences, among others by analyzing the effectiveness of foundation repairs using the grouting method, analyzing the stability of the dam to deformation , safety factor, for various kinds of scenarios (8 scenarios), as well as analyzing the stability of the dam to seepage and critical velocity of the body and foundation of the dam for conditions before and after soil improvement.The calculation and analysis of the stability of the dam is done using the PLAXIS 8.5 software. The parameters used in the PLAXIS analysis model are gunsat (gamma unsaturated), gsat (gamma saturated), E (modulus of elasticity), C (cohesion), Permeability (k), Poisson Ratio (n), Ø ( shear angle) adjusted according to the dam design parameters planned, then juxtaposed with the required criteria and permitted safety factors. Keywords: Dam, Lolak Dam, Dam Stability, Soil Improvement.
Stabilisasi Tanah Ekspansif Dengan Campuran Abu Batu Bara Dan Abu Terbang Batu Karang Dengan Aplikasi Timbunan Tipe Urugan Tanah Sompie, Fergy A. E.; Manoppo, Fabian J.; Sompie, Oktovian B. A.
JURNAL ILMIAH MEDIA ENGINEERING Vol 8, No 2 (2018): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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

Abstract

The expansive soil is a soil which clay content has a potential for shrinkage due to changes in water content,causing changes in the volume of soil. The expansive soil is a problematic type of soil in a construction project,especially for the construction of a base ground of a building because it contains montmorillonite minerals withthe largest surface area and is very easy to absorb water. The ground with high shrinkage value, the waterbecomes very influential to the behavior physical and mechanical soils. Therefore, in conducting theconstruction planning, investigation or soil investigation must be conducted in order to know the physical andmechanical properties of the soil if the soil contains clay mineral that is expansive so that we are able to stabilizeto increase the strength and carrying capacity of the soil. Stabilization is done by using fly ash (fly ash) coal androcks.       The objective of this research is to obtain the shear parameter value after mixing coal fly ash and coral aswell as to know the application on landfill type by using 2D plaxis program to know the value of decrease,excess pore water pressure and safety factor. The composition of the mixture used for obtaining shear parametervalues is coal fly ash + ash, soil + rock fly ash and soil + coal fly ash and coral reefs of 2%, 4%, 6%, 8%respectively. For applications on the design of embankment type of soil type taken mixture composition is soil +coal fly ash, soil + fly ash rock and soil + fly ash coal and coral reef 2% and 8% respectively. The sample of thesoil is taken in Warembungan Village, Pineleng District. Investigation of physical and mechanical properties ofthe soil is also carried out such as filter and hydrometer analysis, moisture content, specific gravity, atterbergtest, consolidation test to determine the development (swelling) and CBR Laboratory.       The results showed that the addition of fly ash coal, rock and coal + corals showed the variation of cohesionvalues and shear angle in the increasing percentage of fly ash coal, coal and coral + coal. The original soilcohesion value is 1.72 t / m2 and the inner shear angle is 11.8 °. In mixing between expansive soil + fly ash coalmaximum cohesion value was found at 8% addition which was 1.90 t / m2 while the shear angle value rose to17,93 ° at 6% addition. In mixing of expansive soil + fly ash of rock the maximum cohesion value is in 2%addition which is 1.48 t / m2 while the shear angle value rises to 30,10 °. In mixing of expansive soil + fly ashcoal + coral maximum cohesion value is in 2% addition which is 0,58 t / m2 whereas shear angle value rose to38,80 °. For embankment applications with 0% or no mixture of decreasing values, excess pore water and safetyfactors are 0.312 m, 2.34 kN / m2, and 1.18, respectively. In mixing between expansive soil + fly ash coaldecreased slightly on 8% variation where the value of decrease, excess pore water and safety factor were 0.35 mrespectively; 0.565 kN / m2, and 1.117. In mixing between expansive soil + fly ash rocks, the decreasing value,excess pore water and safety factor increased in 2% variation respectively to 0.188 m; 0.777 kN / m2, and 1,253.In mixing of expansive soil + fly ash coal + coral, decreasing value, excess pore water and safety factorincreased in 2% variation to 0.267 m respectively; 0.657 kN / m2, and 1.245.The addition of fly ash to coralreefs is more effective and efficient than coal in raising the value of soil shear strength parameter but in landfillapplication will be more effective if it is done the addition of both fly ash coal + coral to get smaller decreasevalue and safety factor greater than. It is recommended to first base soil stabilization and use better materialselection for embankment to further increase the safety factor and minimize the decrease value. Keywords: expansive soil, high shrinkage, stabilization, fly ash coal, coral reef ash, safety facto
Co-Authors Agnes T. Mandagi Alva N. Sarajar Azzyzaro Junior Karaseran, Azzyzaro Junior Christian Pontororing Daud, Agatta F. E. Fabian J. Manoppo Freddy Jansen George Moningka J. A. R. Sumampouw J. E. R. Sumampouw Jack H. Ticoh Josef E. R. Sumampouw, Josef E. R. Julfrenly Onding Lapis Lalandos, Puan M. T. Landangkasiang, Febiola Nasrani Lintong Elisabeth Lontoh, Rheky Julistian Lumentah, Elrinawati Mukramin, Suci Cahyani Naseriman, Agatha N. E. Olivia Stephani Mentang Panjaitan, Armando Prisila Immakulata Lesi Lengkong Rawung, Claudia Tessa Ronald Agus Jembise Rondonuwu, Steeva G. Roski R. I. Legrans Sartje Monintja Sesty E. J. Imbar Sjachrul Balamba Slat, Pethreesia Sompie, Fergy A. E. Sompie, Gracia Mizuno Elisa Stephanie Mariane Felly Nangoy Sumampouw, Joseph E. R. Sutrianingsih, Ni Wayan Tijow, Kurnia Christy Tuerah, Ellisa Turangan A. E. Violetta Gabriella Margaretha Pangemanan Walewangko, Bill Yohanes