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All Journal Jurnal Teknik Sipil SIKLUS: Jurnal Teknik Sipil Jurnal Aplikasi Teknik Sipil Jurnal Rekayasa Sipil Astonjadro Jurnal Pensil : Pendidikan Teknik Sipil APTEK IGKOJEI: Jurnal Pengabdian Masyarakat SAINSTEK Jurnal Teknologi & Rekayasa Sipil
Satibi, Syawal
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Veterinary Other

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Value Estimation Of California Bearing Ratio From Hand Cone Penetrometer Test For Pekanbaru Soils Soewignjo Agus Nugroho; Muhammad Yusa; Syawal Satibi
Jurnal Teknik Sipil Vol 26 No 1 (2019)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2019.26.1.4

Abstract

In practice, the design of pavement is commonly based on the California Bearing Ratio (CBR) test. This research was performed to study local correlation between Hand Cone Penetrometer (HCP) tests to the field CBR value. The local correlation is determined based on comparisons of HCP and CBR test results for the same density of soil taken from several locations in Pekanbaru City, Indonesia. It was found that there is an approximate linear relation in log scale between HCP test results to CBR values for a certain density of soil. Correlation for HCP and density to CBR has been put forward for the local correlation between the two values. Verification of the formula shows that the correlation can be used relatively accurately for predicting the field CBR values from the HCP test for inorganic soils. For organic soil, the formula need to be further researched.Pada praktiknya, perancangan perkerasan jalan didasarkan pada tes California Bearing Ratio (CBR). Studi ini dilakukan untuk mengetahui korelasi lokal antara tes Hand Cone Penetrometer (HCP) dan tes CBR untuk tanah dengan berat jenis yang sama, yang diambil pada beberapa titik di kota Pekanbaru, Indonesia. Berdasarkan analisis, diketahui bahwa terdapat hubungan linear, dalam skala log, antara nilai tes HCP dan CBR untuk tanah dengan berat jenis tertentu. Studi ini kemudian mendefinisikan persamaan korelasi dari HCP dan berat jenis terhadap CBR untuk korelasi lokal antara nilai HCP dan CBR. Dari hasil verifikasi persamaan, diketahui bahwa persamaan korelasi tersebut cukup akurat dan dapat digunakan untuk memprediksi nilai CBR lapangan dengan menggunakan nilai tes HCP untuk tanah inorganik. Penelitian lebih lanjut perlu dilakukan untuk mendefinisikan formula korelasi untuk tanah organic. 
PREDIKSI KAPASITAS DAYA DUKUNG HELICAL PILE TUNGGAL BERDASARKAN DATA SONDIR PADA TANAH GAMBUT Suratman Suratman; Ferry Fatnanta; Syawal Satibi
Siklus : Jurnal Teknik Sipil Vol. 5 No. 1 (2019)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v5i1.2274

Abstract

Sebagian besar dari wilayah provinsi Riau merupakan tanah gambut. Tanah gambut merupakan tanah yang terbentuk dari tumbuhan yang mengalami pembusukan ribuan tahun. Daya dukung fondasi merupakan permasalahan baru yang harus diselesaikan dalam pembangunan infrastruktur diatas lahan gambut. Perkuatan pada fondasi diperlukan untuk menaikan kapasitas daya dukung gambut. Salah satu alternatif untuk meningkatkan daya dukung gambut adalah fondasi helical pile. Penggunaan data sondir untuk memprediksi daya dukung tanah gambut disebabkan kareana pengujian sondir sangat familier di kalangan praktisi di Indonesia. Penelitian ini akan mencari metode analitis yang sesuai untuk prediksi daya dukung helical pile dengan membandingkan dengan hasil uji pembebanan. Interpretasi hasil pembebanan menggunakan metode penurunan 25 mm dan tangent intersection. Metode analitis yang digunakan dalam penelitian ini adalah metode Meyerhoff dan LCPC. Dari hasil pembebanan diperoleh diperoleh Qult sebesar 2,90 kN dengan metode interpretasi penurunan 25 mm dan 2,10 kN untuk interpretasi metode tangent intersection. Hasil analitis kapasitas daya dukung helical pile untuk metode Mayerhoff, Schmertmann, dan Tumay&Fakroo memberikan hasil 6,03 kN, 8,67 dan 6,30 sedangkan dengan metode LCPC, Philipponat, dan De Beer memberikan hasil 2,15 kN, 1,97 kN, dan 2,67 kN. Berdasarkan hasil penelitian maka metode LCPC, Philipponat dan De Beer lebih sesuai untuk memprediksi kapasitas daya dukung helical pile di tanah gambut jika dibandingkan dengan metode Meyerhoff, Schmertmann dan Tumay&Fakhroo yang cenderung over estimate.
Pengaruh Penggunaan Semen dan Fly Ash Terhadap Nilai CBR Tanah Lempung Muara Fajar Soewignjo Agus Nugroho; Syawal Satibi; Raflyatullah Raflyatullah
Jurnal Rekayasa Sipil (JRS-Unand) Vol 17, No 3 (2021)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.17.3.267-278.2021

Abstract

Tanah merupakan bagian terpenting dari struktur bawah bangunan maupun perkerasan jalan. Tanah berfungsi memikul beban struktur atas, baik itu berupa beban statis maupun dinamis. Pembangunan jalan bebas hambatan (tol) khususnya di Riau, sebagian besar trace jalan melewati daerah dengan deposit tanah lempung lunak. Masalah pokok pada tanah lempung ialah kembang susut yang besar serta daya dukung yang rendah. Stabilisasi kimiawi dengan bahan tambah (additive) diperlukan untuk memperbaiki sifat-sifat tanah tersebut agar bisa digunakan sebagai lapis fondasi atau tanah dasar pada perkerasan jalan. Pencampuran semen dan abu terbang, sebagai additive, merupakan upaya perbaikan tanah. Penelitian ini bertujuan untuk melihat pengaruh pemakaian campuran abu terbang dan semen pada lempung Muara Fajar. Muara Fajar merupakan Desa di Kecamatan Rumbai, Kota Pekanbaru yang deposit tanah berupa lempung plastisitas tinggi, satu daerah yang akan dilewati jalan tol. Penelitian meliputi perubahan plastisitas karena penambahan additive, perubahan kadar air dan berat volume serta perubahan nilai CBR. Pengujian CBR difokuskan pada kondisi pemeraman 7 hari dan perendaman 4 hari, sesuai standar. Kadar semen dipilih 3% dan 5% dengan masing-masing dicampur dengan abu terbang sebesar 5%, 10%, dan 15%. Hasil penelitian menunjukan, penambahan additive menurunkan sifat kembang susut. Perubahan kadar air dan berat volume mulai dari pencampuran sampai dengan perendaman tidak melebihi 20%. penambahan additive meningkatkan kepadatan tanah. Nilai CBR pada kandungan 3% semen tidak bisa digunakan sebagai material tanah dasar. Nilai CBR, untuk kadar semen 5%, dengan pemeraman 7 hari dan rendaman 4 hari, dengan kadar abu terbang 5%, 10%, dan 15% berturut-turut sebesar 29,33%; 31,47%; dan 35,23%. Penambahan 5% semen dan 5% pada tanah memenuhi syarat sebagai sub-base dan sub-grade jalan.
COMPRESSIVE CAPACITY OF HELICAL PILE FOUNDATION ON PEAT WITH VARIATION OF HELICAL PLATE DIAMETER Sapria Adi; Ferry Fatnanta; Syawal Satibi
ASTONJADRO Vol. 11 No. 1 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i1.5708

Abstract

The use of helical foundations to support structures on peat soil is still a new method. Research is needed to develop this foundation. There are 6 types of helical foundation tested on peat soil. To study the effect of helical plate diameter, plate diameters were varied with sizes 25 cm (M), 35 cm (L), and 45 cm (G). Plate positions (1, 2, 3 plates) are designed at 300 mm spacing. The axial compression bearing capacity test is carried out based on the constant rate of penetration procedure. At the beginning of loading, the load increases significantly. At a certain descent, the load begins to decrease slowly. The load-settlement curve shows that the larger the plate diameter, the greater the load it can withstand. The largest bearing capacity is produced by the GGG 30 foundation (3 plates dia.45 cm), which is 10.83 kN. LLL 30 helical foundation (3 plates dia.30 cm) provides a bearing capacity of 7.14 kN. These results clearly explain that the increase in plate diameter is directly proportional to the increase in the axial compression bearing capacity.
ANALISIS STABILITAS LERENG DENGAN PERKUATAN TIANG MENGGUNAKAN METODE ELEMEN HINGGA (STUDI KASUS JALAN DIPONEGORO KM. 2 PASIR PENGARAIAN) Yarvis Syahwaner; M. Yusa; Syawal Satibi
Aptek Jurnal Apliksai Teknologi (APTEK): Volume 11, No. 01, Januari 2019
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

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

Abstract

The slope that often occurs on the road Diponegoro Km. 2 Pasir Pengaraian has always been a problem by Dinas Bina MargaDan Pengaira Kabupaten Rokan Hulu, but previously improvements were made but were not entirely successful. Then theslope repair with retaining walls using the bore pile pile foundation was considered quite successful to prevent landslides onthe road section. Based on these conditions the author tries to analyze and evaluate the stability of the slope by strengtheningthe bore pile pile, by analyzing the influence of the pile position (Xp/X), pile diameter, pile length (Lz/L) pile and pile spacing(S/D) on the slope. The object of the research was carried out on the slope of Diponegoro Km. 2 Pasir Pengaraian. Theanalysis used is field tension analysis with finite element method analysis of strength reduction. Soil parameters are knownfrom several tests in the field and laboratories which are used as design variables in the analysis process.This thesis presentsthe safety factor of the two-dimensional finite element method with strength reduction analysis using the OPTUMG2 programto validate the slope stability analysis, slope stability analysis simulation with homogeneous clay soil, medium homogeneousclay and homogeneous rigid clay with mast strengthening and evaluation of slope stability analysis in the study case. Theresults of the numerical analysis based on the influence of the pile position on the slope, pile diameter, pile length, and spacingbetween the piles with two pile head conditions is free head and fixed head, the condition of the mast is sufficient to improvethe safety factor of slope stability.
Analysis of the capability of pile assembly foundations in soft soil in physical modeling of variationsiin laboratory scale distances Arief Rahman; Ferry Fatnanta; Syawal Satibi
ASTONJADRO Vol. 12 No. 1 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i1.8139

Abstract

The capacity of raft foundations, pile foundations and pile rafts on soft soil with variations in the distance between the piles. Perform analysis of the carrying capacity and settlement of each foundation test and then compare the results of the theoretical carrying capacity research with the analysis of carrying capacity calculations. The implementation of the test prepares the test along with samples of the raft foundation, pile foundation and pile raft foundation. The test were carried out using a gradual load then a dial gauge is placed at both ends of the sample raft and the load reading is taken. The pile foundation was tested with a decrease of 10 cm while the settlement on the raft foundation and the pile raft foundation was 3 cm, the carrying capacity of the raft foundation was 24 kg, the pile foundation varied 4D distances; 6D and 8D, namely 7.5 kg and the foundation of the pile raft with variations in 4D distance; 6D and 8D are 26 ; 32 and 32 kg. In the interpretation method, the pile raft foundation with various distances increased from 4D to 6D but decreased in 8D. Pile raft foundations with various distances between pile have not a significant effect where raft foundations are more dominant in supporting resistance than pile foundations.
Perubahan Plastisitas dan Permaebilitas Tanah Lempung (CH) terhadap Penambahan Semen dan Limbah BAFA Syawal Satibi; Soewignjo Agus Nugroho; Lala Monang Robert Christian Zega
Jurnal Teknologi dan Rekayasa Sipil Vol. 1 No. 1 (2022): VOL 1 NO 1 (JULI 2022)
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.187 KB)

Abstract

High Plasticity Clay (CH) soils have poor material characteristics, such as large shrinkage which results in high plasticity so that soil improvement is required using cement and coal waste is added (bottom ash and fly ash). The purpose of adding the mixture is to see its effect on changes in the properties of soil plasticity and permeability. BAFA variation is 4%, 8%, 12% and 16%, cement variation is 3% and 5%. Atterberg limit and soil permeability testing is carried out on ripening day 0.7 and 28 days. The test results show changes in the value of Plasticity Index (Plasticity Index) or the value of PI and the value of k (constant) in the soil permeability test that has been added to the mixed material. Based on the results of the atterberg limit test, there was a decrease in the value of the soil plasticity index (PI) and the liquid limit value (LL) while the plastic limit (PL) experienced an increase in value along with the increase in cement content and BAFA waste, while in the soil permeability test it was known that the original soil sample was more difficult to penetrate water compared to soil samples that have been mixed with cement and BAFA waste.
Analisis Stabilitas Pada Teknologi Mortar Busa Dalam Perencanaan Flyover Sp.SKA Kota Pekanbaru Ropiska Alfareza; Syawal Satibi; Muhamad Yusa
SAINSTEK Vol. 11 No. 1 (2023)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v11i1.186

Abstract

Hoarding on soft soil has been done in several ways so that a structure can be built properly, one of which is using light material as a pile on soft soil. Stability analysis will be carried out on the embankment using foam mortar at Flyover SP.SKA. Modeling is done using the finite element method in the plaxis 16 program, this study uses Mohr – Coulomb for selected embankments, while the Linier Elastic model is for light embankments. In the analysis in the oprit Flyover SP.SKA model of foam mortar heap, the Safety Faktor value (SF) is 7,795 for a 30 day waiting time , while in conventional heaps the Safety Faktor value (SF) is 3,910 a 30 day waiting time.
Daya Dukung Model Kelompok Tiang dan Block Foundation Dengan Variasi Panjang dan Spasi Tiang Soewignjo Agus Nugroho; Syawal Satibi; Subhan Pytar Wijaya; Yusuf Agustamar
Jurnal Aplikasi Teknik Sipil Vol 21, No 2 (2023)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v21i2.10842

Abstract

Analysis of bearing capacity for foundation design is important. Therefore, need an alternative design to know actual capacity of pile group and block. Models of pile group with variations in number, length, and spacing is used on uniform loose sand for proved it. The loading tests conducted on pile models and record p-y curve. The research aims to study effect of number, length, spacing of pile in piles group compared with pile capacity of block. Based on 25 mm settlement of loading test, the result shows block foundation, 3d and 5d spacing has capacity 1560N, 1200N, 1230N respectively on 400 mm length. Analysis of p-y curve with Chin methods, pile capacity of spacing 5d, 3d of pile group and block, in sequence, were 1380N, 1430N and 1660N. Hence, its can be concluded that the pile group in 3d spaced has a larger capacity than 5D spaced.
ANALYSIS OF PEAK EARTHQUAKE ACCELERATION (PGA) VALUE IN THE DUMAI DURI KANDIS ROAD AREA KM 68 + 975 USING PSEUDOSTATIC ANALYSIS Tiara Mahardika; Muhammad Yusa; Syawal Satibi
Jurnal Pensil : Pendidikan Teknik Sipil Vol 12 No 3 (2023): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v12i3.36548

Abstract

This study aims to analyze the acceleration value of peak earthquakes with pseudostatic in Riau Province using exploratory research. Earthquakes are one of the natural disasters that often occur in Indonesia. In addition to its high intensity, the impact caused often causes a lot of losses. As one of a high potentialy seismic activity province, Riau is vulnerable to earthquake disasters, the road sections are traversed by heavily loaded vehicles such as on Jalan Dumai Duri Kandis KM 68 + 975 which borders several areas at high risk of earthquakes, so an analysis of the acceleration value of peak earthquakes is needed. The results were found that the earthquake plan that can be used on the Dumai Duri Kandis KM 68 + 975 road section for analysis is PGA = 0.25-0.3g and PGA = 0.25g is taken, the average N-SPT value obtained is 10, based on the average N-SPT value obtained the site classification for its location in the form of soft soil, based on the site classification obtained, the amplification factor for the PGA Soft Land site class = 0.2, Ss = 0.5 is 1.7 while for the Soft Land site class PGA = 0.3, Ss = 0.75 is 1.2. After interpolating obtained FPGA value = 1.45 (for PGA = 0.25), the peak acceleration value of the earthquake on Dumai Kandis Road was 0.1088 g which was needed to analyze slope stability using soil parameter data sourced from laboratory to obtain more accurate safety factor.
Co-Authors Agus Ika Putra Ari Sandhyavitri Arief Rahman Febrizal Febrizal Ferry Fatnanta Lala Monang Robert Christian Zega M. Yusa Muhamad Yusa Muhammad Yusa Muhammad Yusa Raflyatullah Raflyatullah Ropiska Alfareza Rosma, Iswadi Hasyim Sapria Adi Soewignjo Agus Nugroho Soewignjo Agus Nugroho Soewignjo Agus Nugroho Subhan Pytar Wijaya Suratman Suratman Tiara Mahardika Yarvis Syahwaner Yusuf Agustamar