Article Per Year (5 Year)
p-Index From 2020 - 2025
1.503
P-Index
This Author published in this journals
All Journal Journal of Civil Engineering U Karst axial : jurnal rekayasa dan manajemen konstruksi Indonesian Geotechnical Journal Serambi Engineering PENITI BANGSA (Pemanfaatan Ilmu Pengetahuan dan Teknologi bagi Masyarakat)
Danang Setiya Raharja
Universitas Wijaya Kusuma Surabaya
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Social Sciences Other

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Parametric study of tunnel analysis in clay shale on short term and long-term conditions using finite element method Danang Setiya Raharja; I Wayan Sengara; Imam Achmad Sadisun
Indonesian Geotechnical Journal Vol. 1 No. 1 (2022): Vol.1 , No.1, April 2022
Publisher : Himpunan Ahli Teknik Tanah Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (920.499 KB) | DOI: 10.56144/igj.v1i1.4

Abstract

This study aims to determine the characteristics and classification of clay shale in West Java and their implications for tunnel stability under short and long-term conditions using the finite element method. Data were collected from projects in West Java containing clay shale spread over four rock formations, namely Cihoe (Tpc), Subang (Tms), Cantayan (Mtts/Mttc), and Jatiluhur (Tmj). Each formation has varying mechanical and engineering properties. The value of SPT from Cihoe formation can be categorized in three conditions, SPT < 40, SPT 40-60, and SPT > 60 for fully, highly to moderately, and slightly weathered, respectively. Meanwhile, the value of SPT of Subang formation can be categorized in two conditions, SPT < 60 and SPT >60 for fully and highly weathered, respectively. The data collected were analyzed to determine the Mohr-Coulomb (MC) and Hardening Soil (HS) parameters for Plaxis modeling. The model applied three variations of overburden thickness between 3 times, 6 times, and 9 times the tunnel diameter (3d, 6d, and 9d respectively). The greater the overburden thickness, the lower the surface deformation. The HS model gives better results than the MC model because it considers non-linearity. The minimum effective parameters needed to support tunnel during construction to meet the allowable deformation for 3d overburden conditions and the particular reinforcement system are c' 53kPa, ϕ' 28°, and E'50ref 30,000 kPa. Long-term conditions possess lower stability than short-term, while prolonged deformations increase after construction and provide a rise in tunnel lining stress that needs to be considered in the design stage. The application of 2D tunnel modeling needs to be carefully analyzed, thereby representing the behavior of a continuous or 3D tunnel structure.
SENSITIVITY ANALYSIS OF PILE FOUNDATIONS UNDER BRIDGE ABUTMENTS ON HIGH SLOPE AREAS (CASE STUDY IN BESAKIH, BALI) Danang Setiya Raharja
axial : jurnal rekayasa dan manajemen konstruksi Volume 11, Nomor 2, Agustus Tahun 2023
Publisher : axial : jurnal rekayasa dan manajemen konstruksi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/axial.v11i3.3257

Abstract

ABSTRAK: Analisis kestabilan lereng dapat dilakukan dengan menggunakan metode kesetimbangan batas dan metode elemen hingga dengan hasil yang relatif sama. Pada kasus lereng yang diperkuat dengan tiang pancang anti longsor, perlu menggunakan metode analisis yang tepat karena keseimbangan gaya dan momen perlu dipenuhi. Metode Morgenstern-Price menjadi salah satu pilihan terbaik untuk menganalisis kasus ini. Studi ini bertujuan untuk melakukan analisa sensitivitas fondasi tiang bor yang memperkuat lereng tinggi dan menopang abutmen jembatan dilakukan dengan menggunakan studi kasus di Jembatan Besakih, Bali. Faktor panjang dan jarak tiang fondasi pada arah melintang jalan dipilih untuk melihat sensitivitasnya terhadap faktor keamanan stabilitas lereng. Faktor panjang fondasi tiang pancang divariasikan antara 20 m sampai 26 m dengan interval 1 m. Sebagai perbandingan, faktor jarak tanam divariasikan antara 1,7 m hingga 2,3 m dengan interval 0,1 m. Hasil analisis terhadap sepuluh variasi model menunjukkan bahwa faktor panjang tiang tidak sensitif, sedangkan faktor jarak cukup sensitif terhadap kestabilan lereng. Jarak antar tumpukan yang semakin kecil akan menghasilkan FS yang lebih baik dengan pola parabola. KATA KUNCI : analisa sensitivitas, anti-slide pile, metode kesetimbangan batas, stabilitas lereng
Proposed Speedy Moisture Test Calibration Chart on Indonesian Road Embankments Soebagio Soebagio; Danang Setiya Raharja; Utari Khatulistiani
UKaRsT Vol. 7 No. 2 (2023): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v7i2.5144

Abstract

Embankment construction is generally carried out using borrow materials. The water content of embankment material significantly affects the compaction quality. Measuring water content in the field typically uses a speedy moisture test (SMT) because the process is simple, and the result is obtained immediately. The accuracy level of the SMT is relatively high. However, it still needs to be corrected using a calibration chart for a more precise measurement. This research aims to determine the accuracy of the SMT tool compared to the standard oven-dry method, especially on borrow materials in East Java. The experimental method was used with soil samples from Pasuruan and Mojokerto borrow. Standard index properties tests and soil compaction tests were conducted to determine soil type and obtain optimum water content. The water content varies in several levels and is measured using SMT and oven-dry methods. The regression was performed to make a correlation, while RMSE and simple paired T-test were conducted to investigate the accuracy level of the correlation chart from this research, respectively. It was found that the soil samples used met the requirements as embankment soil (SW and SM). The proposed calibration chart is presented with the SMT-corrected water content equation (WSMT-corrected = 0.9815WSMT – 1.4323 ). This equation has a coefficient of determination (R2) equal to 0.95, which mean a very strong relationship. The proposed calibration chart performs well according to RMSE, which is equal to 2.41 and paired T-test result. This proposed calibration chart can be widely used in road embankment practice in Indonesia.
COMPARISON STUDY OF DRIVEN PILES AXIAL CAPACITY BY EMPIRICAL METHOD AND DYNAMIC LOAD TEST Tampubolon, Reyance Inryani; Raharja, Danang Setiya
axial : jurnal rekayasa dan manajemen konstruksi Volume 12, Nomor 2, Agustus Tahun 2024
Publisher : Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/axial.v12i2.3944

Abstract

Fondasi adalah bagian struktur yang berfungsi sebagai penopang bangunan dan penyalur beban struktur atas ke lapisan tanah dengan daya dukung. Penyelidikan tanah di lapangan berupa Cone Penetration Test (CPT) dan Standar Penetration Test (SPT) umumnya dijadikan acuan dalam estimasi daya dukung aksial pondasi dalam. Artikel ini melakukan analisis perbandingan estimasi daya dukung tiang pancang sesuai data CPT dan SPT yang kemudian dibandingkan dengan hasil uji beban dinamis (PDA) pada Proyek Pembangunan Fly Over Pengganti JPL 64 Krian, Sidoarjo. Analisis daya dukung metode empiris menggunakan data CPT mengacu pada metode Mayerhoff dan Decourt (1995). Sedangkan analisis dengan data SPT mengacu pada metode Mayerhoff (1956) serta Schmertmann dan Notingham (1975). Perbandingan hasil analisis menunjukkan metode Decourt (1975) berdasar data SPT dan metode Schmertmann dan Nottingham (1975) berdasar data CPT adalah yang lebih baik ketelitiannya untuk mendekati hasil analisis CAPWAP dari Uji PDA, sedangkan metode Mayerhoff baik untuk data SPT maupun CPT masih dapat digunakan namun diperlukan kehati-hatian yang ekstra. Keterbatasan kedalaman dari data CPT dapat diantisipasi dengan melakukan proses interpolasi terhadap data jumlah hambatan pelekat dan terlihat memberikan hasil yang cukup baik dengan analisis menggunakan metode Schmertmann dan Nottingham (1975) dengan catatan tidak terdapat lapisan tanah lunak di bawah akhir data CPT.Kata Kunci : daya dukung aksial, PDA, metode empiris, tiang pancang
Comparative Study of Conventional Cantilever Wall and Mechanically Stabilized Earth Wall for Slope Failure Remediation Paing Heru Waskito, Johan; Setiya Raharja, Danang
Journal of Civil Engineering Vol 38, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i3.19457

Abstract

 Slope failure is caused by many factors, mainly high rainfall, especially in a tropical country like Indonesia. Many solutions have been expanded to do remediation of slope failure. However, establishing the best solution method is difficult because of many geotechnical challenges and different situations at the site. In addition, fast rate construction in line with a good quality of stability aspect is necessary to be attained. Therefore, a comparative study of two common solution methods, namely conventional cantilever wall and mechanically stabilized earth wall, was conducted to determine the best solution for slope failure remediation in the case studied. The analysis was performed by using a computer software program coded Geo5. A slope failure case in Bali was selected to investigate the performance of both studied methods in meeting all engineering criteria, including bearing capacity, internal stability (overturning and sliding), and global stability. The results show that mechanically stabilized earth wall gives more advantage not only in meeting all criteria but also in providing aesthetic concern and sustainable performance. On the other hand, conventional cantilever walls show a deficiency in global stability that will require pile foundation support or another reinforcement under the base plate, which will automatically increase construction time. The use of computer software will provide a more sophisticated analysis to examine various slope failure remediation methods to establish the most suitable solution for the specific sites. There is still expansive room to be researched in this area.
Pemanfaatan Internet of Things untuk Monitoring Deteksi Tanah Longsor Danang Setiya Raharja; Soepriyono; Andaryati; Nia Saurina; Aris Setiawan Indras Pratama
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

Abstract

Landslides are one of the most common natural disasters in Indonesia. This disaster can cause significant material losses and casualties. Therefore, a landslide monitoring system must be an early warning system. Prevention is one of the important steps to reduce the negative impact of landslides. The existing landslide early warning system still needs improvement, including low accuracy and slow response in providing information. This research aims to create a product, which we have named DinSor, as a landslide early warning system by utilizing the Internet of Things (IoT). The proposed system uses IoT-based sensors to detect changes in ground conditions, including soil movement through ultrasonic sensors and the degree of soil water content through soil mixture sensors. The data generated by these sensors is then displayed on the website as graphs and numbers for analysis. The trial results show that the developed system has advantages in detecting potential landslides. The system's response in providing information has also proven to be accurate and precise, with warning times shorter than previous systems. When the sensor indicates a potential landslide, a warning message can be sent to the local regional disaster management agency via WhatsApp.
Pengenalan dan Pelatihan Dasar-Dasar Matematika Pada Aplikasi Microsoft Excel Marjono, Brigita Tri; Salsabila, Khanza Firyal; Sylvago, Kevin Chester; Mohammad Alwin Danendra; Huri, Khotibin Sofyan Atsah; Wahyuningtyas, Emmy; Raharja, Danang Setiya
PENITI BANGSA (Pemanfaatan Ilmu Pengetahuan dan Teknologi bagi Masyarakat) Vol 3 No 1 (2025): PENITI BANGSA
Publisher : Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/PENITI-BANGSA.v3i12025.167

Abstract

Information and Communication Technology has developed rapidly and has changed many aspects of our lives, including education. As part of the Microsoft Office application package, Microsoft Excel is very helpful for learning and data processing in educational institutions. Microsoft Exceed expectations could be a computer program that forms information naturally counting fundamental calculations, the utilize of capacities, and others. Such a handle can be wasteful since it takes a long time to calculate. Prior to Microsoft Excel, people used to perform math operations using a calculator or even calculate manually using traditional calculating tools or relying on intelligence in calculations. Therefore, training and introduction to Microsoft Excel was conducted directly by conducting discussions with several students so that they can understand that calculation operations can be quickly done by using Microsoft Excel. by conducting this discussion, students can understand for themselves and try to operate Microsoft Excel according to what has been discussed.
ANALISIS PERBAIKAN TANAH LUNAK MENGGUNAKAN METODE PRE-LOADING, PVD DAN PHD UNTUK TIMBUNAN PADA JALAN KELAS I, SUMATERA BARAT Raharja, Danang Setiya; Hibatullah, Muhammad Hilmi
axial : jurnal rekayasa dan manajemen konstruksi Volume 13, Nomor 1, April Tahun 2025
Publisher : Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/axial.v13i1.4260

Abstract

Tanah lunak merupakan tanah yang kohesif yang terdiri dari tanah yang sebagian besar terdiri dari butir-butir yang sangat kecil seperti lempung dan lanau. Lapisan tanah lunak mempunyai sifat gaya geser yang rendah, kemampatan yang tinggi, koefisien permeabilitas yang rendah, karakteristik daya dukung relatif rendah dan pemampatannya relatif besar serta lama. Provinsi Sumatera Barat, Padang merupakan tanah yang memiliki sifat tanah lunak yang terdiri dari tanah gambut dan tanah lempung. Penelitian ini bertujuan memperbaiki tanah lunak untuk jalan kelas I menggunakan metode Pre-Loading kombinasi Prefabricated Vertical Drain (PVD) dan Prefabricated Horizontal Drain (PHD) dengan berbagai variasi tinggi timbunan. Hkritis timbunan yang diperhitungkan dengan ketinggian sebesar 3,807 m.  Perhitungan Prefabricated Vertical Drain (PVD) dengan kedalaman tanah yang digunakan 12 m dengan tinggi timbunan 3 m, tinggi Pre-Loading 5.2 m dan beban jalan 35.44 kN/m3. Hasil Perhitungan Matematis untuk mencapai derajat konsolidasi 90 persentase tanpa penggunaan PVD lama waktu 1414 hari dan besar penurunan 0.479 m, penggunaan PVD dengan jarak 1.8 m didapat lama waktu 57 hari dan besar penurunan 0.482 m. Perencanaan PHD setiap 1 ujung PVD mengeluarkan air seluas 2.806 m2 dengan panjang lajur maksimum PHD 75 m menghasilkan estimasi debit aliran air horizontal sebesar 0.00007584 m3/s.
Co-Authors Andaryati Aris Setiawan Indras Pratama Emmy Wahyuningtyas Hibatullah, Muhammad Hilmi Huri, Khotibin Sofyan Atsah I Wayan Sengara Imam Achmad Sadisun Marjono, Brigita Tri Mohammad Alwin Danendra Nia Saurina Paing Heru Waskito, Johan Salsabila, Khanza Firyal Soebagio Soebagio Soepriyono Sylvago, Kevin Chester Tampubolon, Reyance Inryani Utari Khatulistiani