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All Journal Jurnal Pensil : Pendidikan Teknik Sipil JMTS: Jurnal Mitra Teknik Sipil Jurnal ABDINUS : Jurnal Pengabdian Nusantara
Hakim, Abi Maulana
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ANALISIS PERKUATAN SOIL NAILING PADA LERENG SUNGAI CILIWUNG DI AREA LAPANGAN TEMBAK KOPASSUS CIJANTUNG Hakim, Abi Maulana; Rifan, Muhammad; Sahadewa, Andhika
JMTS: Jurnal Mitra Teknik Sipil Volume 8, Nomor 3, Agustus 2025
Publisher : Prodi Sarjana Teknik Sipil, FT, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmts.v8i3.32627

Abstract

This study analyses the slope stability of Ciliwung Riverside in the Kopassus shooting range area, where signs of landslides occurred i.e. broken fence and road pavement on top of the slope. The purpose of this research is to evaluate the slope's safety factor (SF) before and after reinforcement with soil nailing, as well as to examine the effect of variations in length, spacing, and soil nailing’s diameter on the slope's SF. The stability analysis is conducted using the limit equilibrium method through a computer program The slope's SF before reinforcement was 1.16 ≤ 1,5, indicating the need for additional reinforcement. Out of 125 soil nailing variations tested, 61 variations achieved a static SF ≥ 1,5 (ranging from 1,50 to 1,67) and an earthquake SF ≥ 1,1 (ranging from 1,17 to 1,29). The results showed that increasing the borehole diameter and nail length increases the SF, while increasing the nail spacing decreases the SF. The optimal combination was obtained at spacing of 2 meters, nail length of 11 meters, and diameter of 175 mm, resulting in a total nail length of 39 m/m and grout volume of 0,93 m³/m, with a static SF of 1,54 and an earthquake SF of 1,19. Abstrak Penelitian ini menganalisis stabilitas lereng di area lapangan tembak Kopassus, yang mengalami indikasi kelongsoran berupa kerusakan pagar dan jalan aspal di atas kepala lereng. Tujuan penelitian ini adalah untuk mengevaluasi safety factor (SF) lereng sebelum dan setelah diperkuat dengan soil nailing, dan mengkaji pengaruh variasi panjang, jarak spasi, serta diameter soil nailing terhadap nilai SF lereng. Analisis stabilitas dilakukan dengan menggunakan metode limit equilibrium melalui program komputer. Dari analisis didapatkan bahwa SF lereng sebelum perkuatan adalah 1,16 ≤ 1,5. Kondisi ini menunjukkan bahwa lereng memerlukan perkuatan tambahan. Dari 125 variasi soil nailing yang diuji, 61 variasi memiliki SF statik ≥ 1,5 (antara 1,50 hingga 1,67) dan SF gempa ≥ 1,1 (antara 1,17 hingga 1,29). Hasil penelitian menunjukkan bahwa semakin besar diameter lubang bor dan semakin panjang nail, maka SF lereng meningkat. Sedangkan semakin besar jarak spasi menyebabkan SF menurun. Kondisi optimal didapatkan pada spasi nail 2 m, panjang nail 11 m, dan diameter nail 175 mm dengan SF statik 1,54 dan SF gempa 1,19. Total panjang nail yang dibutuhkan sebesar 39 m/m volume grout 0,93 m3/m.
EVALUATION OF SLOPE STABILITY PROBLEMS: A CASE STUDY OF SLOPE REINFORCEMENT ON EXPANSIVE SOIL FOR THE HIGH-VOLTAGE TRANSMISSION TOWER (SUTT) T80 MALINGPING–BAYAH, SUKABUMI Wintoro, Bayu; Hakim, Abi Maulana; Kamil, Aozora Insan; Zakiyyah, Amirah
Jurnal Pensil : Pendidikan Teknik Sipil Vol. 14 No. 3 (2025): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v14i3.54672

Abstract

Expansive soils are highly susceptible to volumetric changes due to moisture fluctuations, which can significantly affect the stability and durability of structures. Therefore, their presence must be carefully considered during the planning and foundation design stages. Survey, field investigations, and lab tests show that soil up to 8 m deep has a plasticity index of 30%–65%. Swelling tests on samples from 1 m–3.5 m depths revealed swelling percentages of 0.545%–0.715% and pressures of 11.7 kPa–12.5 kPa, which are high for near-surface soil. XRD tests identified montmorillonite minerals, known for high activity and shrinkage, contributing to slope cracks and movement. Geotechnical analysis using finite element method shows that slope stability safety factors of 0.84 (static) and 0.62 (earthquake), below required thresholds of 1.5 and 1.1, respectively. The proposed reinforcement includes double-row soldier piles, connected by a capping beam. The slope surface will be graded downstream and reinforced with 1 m thick stone masonry. These measures are expected to increase safety factors to 1.72 (static) and 1.1 (earthquake), meeting safety standards.
Instalasi Berbasis Sensori Audio Sebagai Alat Permainan Anak untuk Menunjang Kegiatan Wisata Di Kampung Keranggan Tangerang Selatan Ridzqo, Intan Findanavy; Refranisa, Refranisa; Hakim, Abi Maulana
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 6 No 3 (2022): Volume 6 Nomor 3 Tahun 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v6i3.16883

Abstract

Kampung Keranggan located on the banks of the Cisadane River, is a pilot project of a tourism village in South Tangerang. However, both as a settlement and a place frequently visited by families, this kampung does not yet have a children playground. This space is very important, especially when an educational function is added to it. The vast landscape in this kampung is available and some area could be designed as a children playground equipped with installation to play. In this paper, the community engagement service activity is to design and to implement children's play installations, also served as educational facilities, namely tubulum and xylophone. Both are percussion instruments to train children’s audio sensory. These installations are made of PVC pipe and some household cutleries added on xylophone. This activity was begun with field observations and discussions with the management, making a digital installation design, making installation components in the workshop, and assembling and placing the installation on site. The principle of the installation design is to use materials that are easy to obtain and assemble, and are light in weight. These installations support tourist attraction activities in Keranggan Village and encourages children to play because this installation is placed in strategic place so visitors can easily play it and children are attracted because of its unique shape.
Co-Authors Andhika Sahadewa, Andhika Intan Findanavy Ridzqo Kamil, Aozora Insan Refranisa, Refranisa Rifan, Muhammad Wintoro, Bayu Zakiyyah, Amirah