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Analisis Stabilitas Lereng Galian Waduk Brigif Terhadap Perbedaan Tinggi Muka Air Rencana Avianza, Ardha Dissa; Pradiptya, Andikanoza; Agung, Putera Agung Maha
Journal of Applied Civil Engineering and Infrastructure Technology Vol 4 No 1 (2023): Agustus 2023
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v4i1.381

Abstract

Excavation is one of the works whose purpose is to adjust the existing surface height to the height of the planned surface and cause the value of the slope stability to decrease due to the loss of the natural soil retaining layer. Slope stability analysis is carried out with the aim of predicting changes in the value of safety numbers (SF) that occur as a result of excavation work. The excavations carried out are categorized as deep excavations with a depth of 8.16 m and are used terraces. Slope stability analysis using manual calculation of Simple Bishop method divided by 17 slices and application calculation using Geostudio-2012. Slope stability analysis is carried out during the service period with low-high water level conditions. The results of manual analysis at low water level conditions are predicted to have an SF value under normal conditions of 4.6 and when the condition is earthquake at 2.7. Meanwhile, the results of the analysis with the application obtained the results of predicting the SF value under normal conditions of 4.2 and in earthquake conditions of 2.6. However, analysis of high water level conditions is predicted to manually reduce the SF value of 2.5 under normal conditions and 1.6 in earthquake conditions. Then, using the application, the results of predicting the SF value at normal conditions of 2.5 and in earthquake conditions of 1.6 were obtained. In general, the stability of the slopes under review has safe conditions under normal conditions and earthquake conditions.
Simulation Model for Rainfall Intensity to Landslide Susceptibility Lutfi, Nurul Adibah; Ahmad, Mustaffa Anjang; Maha Agung, Putera Agung; Sedayu, Agung; Abdullah, Nazirah Muhamad
Journal of Applied Civil Engineering and Infrastructure Technology Vol 5 No 2 (2024): Desember 2024
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v5i2.843

Abstract

Landslides are one of the most hazardous natural disasters because their occurrences are often destructive to natural and artificial structures on earth and reduce, the quality of the surrounding environment. Predicting the susceptibility of an area to landslides is essential for reducing losses in terms of property, human lives, and environmental damages. Kota Wisata Batu (KWB) is one of areas which having a highest landslide potential in East Java, Indonesia, recording data mentioned that there are 109 landslides in 2022 caused by highest rainfall intensity of 502 mm with a number of intensities of 2977mm per year. Study purposed to identify the factors contributing to landslide occurrences using a geodetic measurement method. The study uses geographic information system (GIS) and PRISMA software analyses to examine and/ or evaluate the relationship between rainfall intensity and landslide susceptibility. The study results the generation of rainfall patterns and maps highlighting sensitivity areas to landslides. These visual representations the classification area as a high-risk and susceptibility zone to landslides at Kota Wisata Batu, East Java. January to April, and August to November should have pay attention since these months is reflection of monsoonal climate with the hard rain in a few days without the raining pause. Some places which are required to pay attention, such as: Gunungsari, Tulungrejo, and Songgokerto.
PERENCANAAN LERENG SUNGAI SUGUTAMU PADA LOKASI PROYEK PESONA SQUARE DEPOK Putera Agung Maha Agung; Ramadhanty Saputri; Umar Alfaruqi Abdurrahman
Jurnal Poli-Teknologi Vol. 17 No. 1 (2018)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v17i1.1099

Abstract

ABSTRACTThe location of inspection and vehicle road at Pesona Square Depok Project is on the side of Sugutamu River and contoured land giving a worried about sliding and erosion. This research was conducted for design the Slope of Sugutamu River At Pesona Square Depok Project which is effective, efficient, and gives comfort to the people there in using the road. Slope stability planning divided into 4 phase of calculation. Slope without outside load and not affected by river water surface phase, slope without outside load but affected by river water surface phase, slope with outside load but not affected by river water surface phase, and slope with outside load and affected by river water surface phase. The analysis uses two methods, manual analysis Fellenius methods and computer analysis PLAXIS program version 8.2. The shape and angle of the slope selected in this design is 60° and no-staging.. The value of minimum safety number from manual calculation of Fellenius method is 1,287 and PLAXIS program version 8.2 is 3,718. The value of the safety factor used is 1.25.Keywords: slope stability, safety factor, Fellenius method, PLAXIS version 8.2ABSTRAKLetak jalan inspeksi dan kendaraan pada Proyek Pesona Square Depok yang bersebelahan dengan Sungai Sugutamu dan bentuk tanah yang berkontur menimbulkan kekhawatiran akan terjadinya sliding dan erosi. Penelitian ini dilakukan untuk merencanakan lereng Sungai Sugutamu Pada Lokasi Proyek Pesona Square Depok yang efektif dan efisien serta memberikan kenyamanan kepada warga setempat dalam menggunakan jalan tersebut. Perencanaan stabilitas lereng dilakukan dalam empat fase perhitungan. Fase lereng dalam keadaan tanpa beban luar dan muka air sungai, fase lereng tanpa beban luar namun dipengaruhi muka air sungai, fase lereng dibebani beban luar namun tidak dipengaruhi muka air sungai, serta fase lereng dibebani beban luar dan dipengaruhi muka air sungai. Analisis menggunakan dua metode yaitu analisis manual metode Fellenius dan analisis komputer dengan program PLAXIS versi 8.2. Bentuk dan sudut kemiringan lereng yang dipilih dalam perencanaan ini yaitu sebesar 60˚dan tanpa undak (no-staging). Nilai angka keamanan terkecil yg didapat dari perhitungan manual metode Fellenius yaitu 1,287 dan program PLAXIS versi 8.2 sebesar 3,718. Nilai minimum faktor keamanan yang digunakan sebesar 1,25.Kata kunci : stabilitas lereng, faktor keamanan, metode Fellenius, PLAXIS versi 8.2
Perilaku Nilai Kuat Tekan Bebas pada Tanah Ekspansif Kabupaten Tangerang Maha Agung, Putera Agung; Nurfitria, Aida; Adinegara, Aldo Wirastana; Salim, Zaindra Fakhri
Journal of Applied Civil Engineering and Infrastructure Technology Vol 7 No 1 (2026): Agustus 2026 (Articles in Press)
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v7i1.961

Abstract

Expansive soil is a type of soil that often causes problems in construction due to its ability to swell and shrink due to fluctuations in moisture content. This study evaluates the behavior of an expansive soil sample from Kranggan Road, Cisauk Subdistrict, Tangerang Regency, using the laboratory unconfined compressive strength (UCT), including its physical properties. The unconfined compressive strength testing is needed to determine (qu) values of expansive soils. Road damage due to the expansive soil would cause some cracks and/ or pavement surface damage in a short time. The research aims to find the deformation behavior based on the plasticity index (PI) and (qu) value using PLAXIS 2D. The results show that the expansive soil could be classified as montmorillonite inorganic clay with a high value of plasticity index (PI) of 35.30%. Unconfined compression value was 3.53 kg/cm2 and 2.89 kg/cm2 in compacted and remoulded conditions, respectively. Magnitude of deformation during the rainy season indicated that a heave deformation of 0.14 mm and the settlement reached 0.47 mm with an SF value of 1.10. The maximum of a heave deformation value was 0.14 mm and 0.30 mm for settlement with a safety factor (SF) value of 1.30 during the dry season.
Simulasi Angka Keamanan Menggunakan Metode Elemen Hingga Berdasarkan Nilai Kohesi (c) dan Sudut Geser Dalam Maha Agung, Putera Agung; Salim, Zaindra Fakhri; Nurfitria, Aida; Adinegara, Aldo Wirastana
Journal of Applied Civil Engineering and Infrastructure Technology Vol 7 No 2 (2026): Desember 2026 (Articles in Press)
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v7i2.962

Abstract

Expansive soil is a type of soil that can expand and shrink based on the moisture content. In Cisauk Subdistrict, Tangerang City, there are many damages to building structures and/ or roads caused by the expansive soil. This research is intended to identify the expansive soil, including its physical characteristics, in determining the cohesion (c) and internal shear angle (f) values using the UU (unconsolidated undrained) triaxial test. Test results indicated that the cohesion value was around 0.33 kg/cm² or 32.94 kN/m², and an internal shear angle of 20.51°. Both datasets were used to analyze slope stability modeling in defining the safety factor (SF) using PLAXIS software in 2D during rainy and dry seasons. Each condition was evaluated by the three slope variations, such as 20°, 40°, and 60°. Modeling results show that the (SF) would be higher on flatter slopes, and on the contrary, would decrease on steeper slopes. In addition, the (SF) would be higher during the dry season than the rainy season. The soil condition would be more saturated during the rainy season.
Investigation of Aquifer Model to Potential of Ground Movement at Brau Village, Kota Wisata Batu, Jawa Timur, indonesia Maha Agung, Putera Agung; Gautama, Gregorius Aryoko; Istiatun; Amir, Mardiana; Adinegara, Aldo Wirastana; Eko Wiyono; Wacono, Sidiq
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 3 (2025): JGEET Vol 10 No 03 : September (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.3.16836

Abstract

Soft soils at Brau Village area, Kota Wisata Batu (KWB) usually form in alluvial highlands due to weathering of sedimentary rocks. An upper and lower aquifer of sandy layer exist between soft soil. Groundwater pools into aquifer layers and infiltration from surface water into the soft soil layers (clayey and/ or silty) generated a ground movement potential. Study will elaborate the behavior of layers of clayey and/ or silty separated by 2 (two) aquifer layers in detail causing some damages to infrastructure. Wall and/ or floor cracks at school buildings and collapse and/ or differential settlement in road pavement  are a failure of soil layers due to high pore water pressure coming from direction of aquifer zone especially during rainy season. Pore water pressures were determined by rate of settlement prediction from consolidation laboratory analyzed by Ying et al (2015) and actual measurement using electromagnetic data. Research results found that gradually increment of pore water pressure would exceed a total stress in reducing an effective stress drastically and created a location of initial ground movement at the toe of slope around infrastructure area. High pore water pressure due to the increment of water volume at aquifer layer can push down soil layers with safety factor (SF) < 1.0. At the same time, ground movement would generate cracks > 10 cm width at wall and floor of school building structure; and collapse or differential settlement occurred in road construction > 18 cm depth due to bonding agent separated between soil particles.
Analisis Stabilitas Lereng Menggunakan Matras dan Cerucuk Bambu pada Projek X Musyaffa Esa Cahya; Intan Juliana; Yelvi Yelvi; Putera Agung Maha Agung; Aldo Wirastana Adinegara; Sony Pramusandi; Muhammad Fathur Rouf Hasan; Rahmat Faizal
Borneo Engineering: Jurnal Teknik Sipil Vol. 9 No. 3 (2025): Volume 9 Nomor 3 Tahun 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v9i3.336

Abstract

The construction of PT. X' depot in Langsa City, Aceh, is located on soft clay soil that requires slope stability analysis for the embankment. This research aims to analyze slope stability using bamboo mattresses and piles as reinforcement to improve the safety factor. The analysis was conducted using manual calculations (Bishop method) and GeoStudio software (also using the Bishop method), under both static conditions and seismic influence (pseudostatic approach with a horizontal seismic coefficient (kh) = 0.18). The manual calculation results showed that the unreinforced slope had a safety factor (SF) of 1.1428 < 1.25 (unstable), which decreased to 0.6711 < 1.1 (unstable) under seismic load. Meanwhile, the GeoStudio software analysis indicated that the unreinforced slope had an SF of 1.256 > 1.25 (stable) but dropped to 0.903 < 1.1 (unstable) under seismic load. The use of 1–4 layers of bamboo piles and matting increased the SF to 1.318–1.35 without seismic influence. Under seismic conditions, the SF of the slope reinforced with 1–4 layers of bamboo piles and matting improved to 0.931–0.97. However, the slope was still considered critical during an earthquake (SF < 1.1).