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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Sains dan Teknologi Jurnal Informatika Jurnal Teknik Sipil dan Perencanaan APTEK Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Rekayasa Sipil Proceedings ACES (Annual Civil Engineering Seminar) Fondasi: Jurnal Teknik Sipil Jurnal Teknik Sipil Jurnal Ilmiah Dinamika Rekayasa (DINAREK) Teras Jurnal International Journal of Artificial Intelligence Research Journal of the Civil Engineering Forum SIKLUS: Jurnal Teknik Sipil Jurnal Rekayasa Sipil Astonjadro Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Civil Engineering Collaboration Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) Makara Journal of Technology Jurnal Teknologi & Rekayasa Sipil

Soewignjo Agus Nugroho

Jurusan Teknik Sipil, Fakultas Teknik, Universitas Riau

Author-ID : 333478

Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Transportation

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KORELASI PARAMETER KUAT GESER TANAH HASIL PENGUJIAN TRIAKSIAL DAN UNCONFINED COMPRESSION STRENGTH (UCS) Soewignjo Agus Nugroho; Agus Ika Putra; Rugun Ermina
Jurnal Sains dan Teknologi Vol 11, No 1 (2012): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

Parameter kuat geser tanah diperlukan pada analisis daya dukung tanah, stabilitas lereng dan tekanan aktif pada dinding penahan tanah. Nilai parameter kuat geser tanah diperoleh dari uji geser di laboratorium, seperti Unconfined Compression Strength (UCS), Vane Shear, Direct Shear dan Triaxial. Setiap pengujian dapat menghasilkan nilai yang berbeda walaupun sampel uji pada kondisi yang sama. Pengujian triaksial sangat dianjurkan untuk menentukan parameter kuat geser tanah karena dapat disesuaikan dengan kondisi lapangan. Tetapi pelaksanaan pengujian triaksial membutuhkan ketelitian dan waktu yang lebih lama dibandingkan pengujian geser lainnya. Tujuan dari penelitian ini adalah mendapatkan suatu hubungan atau korelasi antara parameter kuat geser tanah yang dihasilkan dari pengujian triaksial dengan hasil pengujian UCS. Pada penelitian ini digunakan metode eksperimental dan model. Benda uji berupa campuran lempung/pasir yang dibentuk kembali, diberi pembebanan awal sehingga kondisi tidak terganggu. Untuk pengujian triaksial dan UCS digunakan benda uji dengan ukuran dan kondisi yang sama. Hasil pengujian dianalisis dengan regresi linier berganda antara dua hasil pengujian triaksial dan hasil pengujian UCS dengan dan indeks propertis tanah campuran. Hasil pengujian dan analisis menunjukkan ada korelasi kuat antara sudut gesek internal hasil pengujian triaksial dengan kohesi hasil pengujian UCS dan indeks propertis tanah. Korelasi hubungan kohesi hasil uji triaksial dan hasil uji UCS dan indeks propertis sangat kuat dengan nilai kohesi yang diperoleh dari pengujian UCS sekitar 15% selalu lebih kecil dari pengujian triaksial.Kata kunci: kuat geser tanah, Unconfined Compression Strength, Triaksial, korelasi

OPTIMASI BIAYA ALTERNATIF PEMILIHAN PONDASI TOWER DI KOTA PEKANBARU Soewignjo Agus Nugroho; Rian Tri Komara; Ari S. Sibarani
Jurnal APTEK Vol. 6 No. 1 (2014): APLIKASI TEKNOLOGI
Publisher : Universitas Pasir Pengaraian

The purpose of this study is to analyze the design and costs required to implement the tower foundation construction and foundation type to vary the diameter and depth of the foundation. It is expected that this study will provide benefits in the selection of the type and design of tower foundations on different types of soil in the city of Pekanbaru so as to provide a reference for implementing the field.The foundation of the tower there are 3 analyzed the foundation of the palm, bored pile foundation and pile foundation. In order to get the optimal type of foundation, each foundation is divided into 3 alternatives. For the palm foundation foundation depth of 2.2 m is restricted, 2.0 m and 1.8 m. Limited bored pile foundation with a diameter of 0.4 m, 0.5 m and 0.6 m. While the pile foundation used a pole with side length 0.2 m, 0.25 m and 0.3 m. Based on the analysis of alternative variations of alternative technical foundation that provides optimum strength with economical cost estimation.

Variasi Kadar Aspal pada Perkerasan Lentur Diperkuat dengan Geosintetik Nugroho, Soewignjo Agus
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 3, Edisi XXXVI, OKTOBER 2006
Publisher : Department of Civil Engineering, Diponegoro University

Reflection crack is one type of road crack. Repairing is usually done by overlay. This research examine role of geosintetic as reinforcement in overlay of flexible pavement. This research is done by making a beams model made of aggregate and asphalt, representing flexible pavement. Models are tested with cyclic loads. Observation is focused on the influence of asphalt content to the rate of crack propagation. Results shows that geosintetics reduced rate of crack propagation, while optimum asphalt content still should be used in design. Keywords: geosintetics, overlay, reflection crack, rate of crack propagationPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3948[How to cite: Nugroho, S.A., 2006, Variasi Kadar Aspal pada Perkerasan Lentur Diperkuat dengan Geosintetik, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 3, pp. 213-223]

Penggunaan Pecahan Genteng sebagai Agregat untuk Lapis Fondasi Perkerasan Lentur Nugroho, Soewignjo Agus
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 2, Edisi XXXV, JUNI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Lime has been used for long time as soils stabilizer in sub base and base construction of road. This research studied influence of lime as stabilizer mixed with debris of clay roof as aggregate. Gradation specification is accordance to Bina marga Standard. Lime content used in this research are 0%; 2,5%; 5%; 7,5%; 10%; 12% and 15%.Result of this research shows as lime content increases, California Bearing Ratio (CBR) value for base also increase 80%; 85%; 88%; 91%; 95%; 100% and 110% respectively. For sub base CBR value increase respectively i.e 50%; 60%; 705; 74%; 85%; 90% and 95%.Keywords: stabilization, debris of clay roof, California Bearing RatioPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/2091[How to cite: Nugroho, S.A., 2006, Penggunaan Pecahan Genteng sebagai Agregat untuk Lapis Fondasi Perkerasan Lentur, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 2, pp. 112-118]

Studi Daya Dukung Pondasi Dangkal pada Tanah Gambut dengan Kombinasi Geotekstil dan Grid Bambu Soewignjo Agus Nugroho
Jurnal Teknik Sipil Vol 18 No 1 (2011)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2011.18.1.3

Abstrak. Pembangunan konstruksi di atas tanah gambut mempunyai banyak masalah, diantaranya adalah daya dukung tanah yang rendah dan penurunan yang besar. Penggunaan kombinasi grid bambu dan geotekstil diharapkan akan dapat mengatasi masalah tersebut. Penelitian ini bertujuan mengetahui hubungan antara kapasitas daya dukung dengan variasi kedalaman letak perkuatan, lebar perkuatan, spasi antara grid bambu dan geotekstil, dan sudut penyebaran beban. Perbedaan daya dukung antara tanah tanpa perkuatan dengan menggunakan perkuatan dinyatakan dalam Bearing Capacity Ratio (BCR). Dari studi model di laboratorium diperoleh hasil BCR maksimum sebesar 4,32 pada rasio L/B, d/B, dan s/B berturut-turut adalah 3, 0,25 dan 0,5. Sudut penyebaran beban maksimum sebesar 78,79° pada L/B dan d/B (B adalah lebar pondasi) berturut-turut adalah 4 dan 0,25. Peningkatan BCR dan sudut penyaluran beban sebanding dengan penambahan dimensi perkuatan dan berbanding terbalik dengan jarak perkuatan dari dasar pondasi. Abstract. The construction on peat soil have many problems, Two significant problems are low bearing capacity and high construction settlement. The usage of grid bamboo and geotextile as a composite system is expected to overcome those problems. The purpose of this research is to check the relationship of bearing capacity with depth of the reinforcement layer, width reinforcement layer and spacing of reinforcement layers between of grid bamboo and geotextile, and to the angle of stresses distribution. The difference of the bearing capacity between unreinforced soils and reinforced soils referred as Bearing Capacity Ratio (BCR). From study model at laboratory the result indicate that maximum BCR is 4.32 at ratio L/B, d/B and s/B are increasing 3, 0.25, and 0.5. Maximum the angle of distribution is 78.79° at L/B and d/B (B is width of footing) are increasing 4 and 0.25. The increasing of BCR and angle of stress distribution is proportional by the increasing of reinforcement dimension and it diversely correlated with depth of reinforcement.

Pengaruh Beban Vertikal Terhadap Daya Dukung Lateral Pondasi Tiang Nugroho, Soewignjo Agus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Pile foundations are intended to hold both vertical and horizontal loads. Pile foundation design must take into account the lateral carrying capacity, especially on those that experience large lateral force. In fact, vertical load and horizontal load work simultaneously on the piles. Therefore it is necessary to look at the effect of the vertical load towards the carrying capacity the lateral piles. This study uses several models of pile foundation. The inclination of which the models are varied pile into three kinds, namely the inclination of 0° (upright pole), the inclination of 15o and 30o. While the vertical load is varied into four kinds, namely 0 kg load (no-load), 0,5 kg, 1 kg and 2 kg.The tests were done by inflicting horizontal loading on each variation of test models. Load test results are interpreted using the Tangent Intersection, Davisson method, the Chin method, and Mazurkiewicz method to get the ultimate lateral bearing capacity. The interpretation result of Tangent Intersection method showed the tendency to increase the carrying capacity of the lateral pile models as the vertical load increase. While the results of interpretation met of Chin method, generally showed the same trend. However, the interpretation of Davisson method and Mazurkiewicz methods did not indicate any trend of increasing the lateral carrying capacity with the increase of vertical load. The relationship between the carrying capacity and the inclination of the pile, from the interpretation of the data of load test results, did not indicate a trend of increasing the lateral carrying capacity of the pile models as the inclination of the piles increase.Keywords : pile foundation, model, lateral, vertical load

Studi Daya Dukung Pondasi Dangkal pada Tanah Gambut dengan Kombinasi Geotekstil dan Grid Bambu Nugroho, Soewignjo Agus
Jurnal Teknik Sipil Vol 18, No 1 (2011)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (664.988 KB)

Abstrak. Pembangunan konstruksi di atas tanah gambut mempunyai banyak masalah, diantaranya adalah daya dukung tanah yang rendah dan penurunan yang besar. Penggunaan kombinasi grid bambu dan geotekstil diharapkan akan dapat mengatasi masalah tersebut. Penelitian ini bertujuan mengetahui hubungan antara kapasitas daya dukung dengan variasi kedalaman letak perkuatan, lebar perkuatan, spasi antara grid bambu dan geotekstil, dan sudut penyebaran beban. Perbedaan daya dukung antara tanah tanpa perkuatan dengan menggunakan perkuatan dinyatakan dalam Bearing Capacity Ratio (BCR). Dari studi model di laboratorium diperoleh hasil BCR maksimum sebesar 4,32 pada rasio L/B, d/B, dan s/B berturut-turut adalah 3, 0,25 dan 0,5. Sudut penyebaran beban maksimum sebesar 78,79Â° pada L/B dan d/B (B adalah lebar pondasi) berturut-turut adalah 4 dan 0,25. Peningkatan BCR dan sudut penyaluran beban sebanding dengan penambahan dimensi perkuatan dan berbanding terbalik dengan jarak perkuatan dari dasar pondasi. Abstract. The construction on peat soil have many problems, Two significant problems are low bearing capacity and high construction settlement. The usage of grid bamboo and geotextile as a composite system is expected to overcome those problems. The purpose of this research is to check the relationship of bearing capacity with depth of the reinforcement layer, width reinforcement layer and spacing of reinforcement layers between of grid bamboo and geotextile, and to the angle of stresses distribution. The difference of the bearing capacity between unreinforced soils and reinforced soils referred as Bearing Capacity Ratio (BCR). From study model at laboratory the result indicate that maximum BCR is 4.32 at ratio L/B, d/B and s/B are increasing 3, 0.25, and 0.5. Maximum the angle of distribution is 78.79Â° at L/B and d/B (B is width of footing) are increasing 4 and 0.25. The increasing of BCR and angle of stress distribution is proportional by the increasing of reinforcement dimension and it diversely correlated with depth of reinforcement.

Pengamatan Lendutan dan Rambatan Retak pada Perkerasan Lentur Diperkuat Geosintetik Akibat Beban Siklik Nugroho, Soewignjo Agus; Kurniati, Inna
Jurnal Teknik Sipil Vol 13, No 4 (2006)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.238 KB)

Abstrak. Salah satu jenis kerusakan jalan adalah retak refleksi yaitu retak yang menggambarkan pola retakan di bawahnya. Retak ini terjadi karena perkerasan yang mengalami retak tidak diperbaiki dengan benar. Perbaikan yang dilakukan pada umumnya menutup retak dengan aspal cair sebelum pelaksanaan overlay. Penelitian ini bertujuan untuk mengetahui perilaku perkerasan lentur di laboratorium diperkuat dengan geosintetik serta pengaruh beban siklik pada lendutan di perkerasan lentur pada beberapa variasi kandungan aspal. Studi juga memperlihatkan bahwa pada kadar aspal optimum, bahan geotekstil paling mampu mereduksi besarnya lendutan dan kecepatan rambatan retak dibandingkan pada kadar aspal di bawah dan di atas kadar optimal.Abstract. Reflection crack is one type of road crack. Repairing is usually done by overlay. This research examined role of geosintetics as reinforcement in overlay of flexible pavement. This research is done by making a beam model made of aggregate and asphalt, representing flexible pavement. Models are tested with cyclic loads. Observation is focused on the influence of asphalt content and using geotextile to the rate of crack propagation. At optimum asphalt content, result shows that geosintetics reduces displacement and rate of crack propagation.

Pengaruh Jumlah Pelat Helical Terhadap Daya Dukung Tekan Pondasi Tiang Helical Pada Tanah Gambut Dengan Metoda Pembebanan Constant Stress Of Penetration Usman, Fauzan; Fatnanta, Ferry; Nugroho, Soewignjo Agus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The selection of the type of foundation is very influential on the strength of a building construction. One of the alternatives that can be used as a substitute for cerucuk foundationis helical pile foundation. Helical pile a manufactured steel foundation consisting of one or more helix-shaped bearing plates affixed to a central shaft that is rotated into the ground tosupport structures. This research presented result of static loading test constant stress of penetration method helical pile conducted at peat. Result of data from loading test in theform of load and settlement will be interpreted with tangent of intersection method, and Terzaghi and Peck method. The addition of helical plate under first helical does not give anyeffect on pile capacity if helical diameter is smaller, when a helical plate at the same diameter is added, the pile capacity increase. For empiric formula calculation of helical pilecapacities show that chylindrical shear closer to the results of loading test, with standard error of 1,06.Key words: helical pile, peat, individual plate bearing, cylinder shear

Estimation of standard penetration test value on cohesive soil using artificial neural network without data normalization Soewignjo Agus Nugroho; Hendra Fernando; Reni Suryanita
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 11, No 1: March 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v11.i1.pp210-220

Artificial neural networks (ANNs) are often used recently by researchers to solve complex and nonlinear problems. Standard penetration test (SPT) and cone penetration test (CPT) are field tests that are often used to obtain soil parameters. There have been many previous studies that examined the value obtained through the SPT test with the CPT test, but the research carried out still uses equations that are linear. This research will conduct an estimated value of SPT on cohesive soil using CPT data in the form of end resistance and blanket resistance, and laboratory test data such as effective overburden pressure, liquid limit, plastic limit and percentage of sand, silt and clay. This study used 242 data with testing areas in several cities on the island of Sumatra, Indonesia. The developed artificial neural network will be created without data normalization. The final results of this study are in the form of root mean square error (RMSE) values 3.441, mean absolute error (MAE) 2.318 and R2 0.9451 for training data and RMSE 2.785, MAE 2.085, R2 0.9792 for test data. The RMSE, MAE and R2 values in this study indicate that the ANN that has been developed is considered quite good and efficient in estimating the SPT value.

Co-Authors ', Muhardi Aditia Siringoringo Adnan Ruziq Ihsan Agus Ika Putra Agus Ika Putra Andarsin Ongko Andius Dasa Putra Ari S. Sibarani Ari S. Sibarani Ari Sandhyavitri Arie S Sibarani Arie S Sibarani Avrilly Zesthree Mauliza Azra Zulnasari Bahrul Junaidi Erik Azarya Ginting Ermiyati Ermiyati Fadhilah, Randy Fajar Restuhadi Febrizal, Febrizal Ferry Fatnanta Fikri Hidayat Giri Prayoga Gunawan Wibisono Gunawan Wibisono Hendra Fernando Ihsan, Adnan Ruziq Inna Kurniati Inna Kurniati, Inna Irfan Hasan Iswadi Hasyim Rosma Julperizal, Julperizal Khairatu Zaro Khairul Umam Lala Monang Robert Christian Zega Lala Monang Robert Christian Zega Zega Lembasi, Muhammad Khadafi Lingga Panji Subrata, Lingga Panji Lita Darmayanti M Faizal Alridho M. Shoffar Al Hafizh M. Yusuf Agustamar Mamoru Kikumoto Manyuk Fauzi Muhamad Yusa Muhammad Faisal Al Ridho Muhammad Faizal Alridho Muhammad Khadafi Lembasi Muhammad Muhshi Muhammad Yusa Muhardi Muhardi Muhardi Ongko, Andarsin Prayogo, Giri Puspa Ningrum puspa ningrum Raflyatullah Raflyatullah Reni Suryanita Rian Tri Komara Rian Tri Komara Rofika Ratna Ardiansyah Roni Indra Lesmana Rudy Suryadi, Rudy Rugun Ermina Sayoga, Davin Syawal Satibi Syawal Satibi Syawal Satibi Syawal Satibi Unzi Marwan Usman, Fauzan Wulandari, Deny Yohanna Lilis Handayani Zoni Satria Zulnasari, Azra

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