ANALISIS STABILITAS TANAH TIMBUNAN BADAN JALAN DENGAN PERKUATAN SOIL REPLACEMENT DAN GEOSINTETIK (Studi Kasus Proyek Jalan Tol Bocimi 3B Sta 32+925 - 32+950)

ANAM, RIFQI KHOIRUL (2025) ANALISIS STABILITAS TANAH TIMBUNAN BADAN JALAN DENGAN PERKUATAN SOIL REPLACEMENT DAN GEOSINTETIK (Studi Kasus Proyek Jalan Tol Bocimi 3B Sta 32+925 - 32+950). S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

To reduce traffic congestion and improve community activities, the Bocimi Toll Road Section 3B was constructed. The toll road project is located at STA. 32+925 - 32+950, where geotechnically, the soil type in the area consists of soft clay, which can cause embankment movement, making it prone to landslides. This study aims to determine the stability of the embankment at Sta 32+925 - 32+950 without reinforcement, embankment stability using granular replacement and non-woven geotextile, embankment stability using woven geotextile and granular replacement, and embankment stability using granular replacement and geocomposite. This research is essential as a construction solution is needed to address soft soil issues and prevent landslides in the Bocimi Toll Road Section 3B project. The research method used is the stability analysis of the road embankment with geotextile and geocomposite reinforcement using the Plaxis program, resulting in safety factor values. The research stages include soil data collection for analysis, data processing using Plaxis software, and drawing conclusions based on existing theories. The analysis results provide safety factor values from different loading conditions, starting with the embankment's self-weight during construction, earthquake load during construction, and traffic load in the post-construction phase. Based on this sequence, the stability analysis of the embankment without reinforcement resulted in safety factor values of 1.542, 1.297, 1.374, and 1.173. The stability analysis with granular replacement and non-woven geotextile produced safety factor values of 2.005, 1.883, 1.774, and 1.354. The stability analysis with granular replacement and woven geotextile obtained safety factor values of 2.187, 1.928, 1.989, and 1.702. The stability analysis with granular replacement and geocomposite resulted in safety factor values of 2.186, 1.938, 1.970, and 1.776 under earthquake load. The analysis using Plaxis V.20 shows that the combination of granular soil replacement with geotextile and geocomposite reinforcement significantly increases the safety factor of slopes to >1.5 under normal conditions and >1.1 under earthquake conditions, indicating stable slopes with low landslide potential. Among all tested reinforcement types, this study recommends geocomposite as the best material, with woven geotextile as an alternative. Keywords: Toll Road, Geosynthetic, Plaxis, Stability, Embankment, Soil Replacement Dalam rangka mengurangi kemacetan dan meningkatkan aktivitas masyrakat, Jalan Tol Bocimi Seksi 3B dibangun. Lokasi proyek jalan tol berada pada STA. 32+925 - 32+950, secara geoteknik, jenis tanah di daerah tersebut merupakan lempung lunak, yang dapat menyebabakan pergerakan tanah timbunan menjadi rawan kelongsoran. Penelitian ini dilakukan untuk mengetahui stabilitas timbunan pada Sta 32+925 - 32+950 tanpa perkuatan pada tanah timbunan, stabilitas tanah timbunan dengan metode replacement granular serta geotekstil non woven, stabilitas tanah timbunan dengan geotekstil woven dan granular replacemen, dan stabilitas tanah timbunan dengan granular replacement dan geokomposit. Penelitian ini penting untuk dilakukan karena diperlukan suatu konstruksi yang berfungsi untuk mengatasi tanah lunak dan juga penahan kelongsoran pada proyek Jalan Tol Bocimi Seksi 3B. Metode penelitian yang digunakan adalah analisis stabilitas timbunan badan jalan dengan perkuatan geotekstil dan geokomposit menggunakan program Plaxis dengan hasil berupa nilai faktor aman. Tahapan penelitian terdiri dari tahap pengambilan data tanah untuk analisis, pengolahan data dengan software Plaxis, dan penarikan hasil dan kesimpulan solusi berdasarkan teori yang sudah ada. Hasil analisis diperoleh nilai safety factor dimulai dari akibat beban timbunan sendiri atau masa konstruksi, kemudian akibat beban gempa dalam timbunan masa konstruksi, dan terakhir akibat beban lalu lintas atau pasca konstruksi. Berdasarkan urutan tersebut, pada analisis stabilitas timbunan tanpa perkuatan diperoleh nilai safety factor: 1.542, 1.297 1.374, dan 1.173, pada analisis stabilitas timbunan dengan replacement granular dan geotekstil non woven diperoleh nilai safety factor: 2.005, 1.883, 1.774 dan 1.354 pada analisis stabilitas timbunan dengan replacement granular dan geotekstil woven diperoleh nilai safety factor: 2.187, 1.928, 1.989 dan 1.702, dan pada analisis stabilitas timbunan dengan replacement granular dan geokomposit diperoleh nilai safety factor:2.186, 1.938, 1.970, dan akibat beban gempa sebesar 1.776. Analisis menggunakan Plaxis V.20 pada pengaruh soil replacement granular ditambah perkuatan geotekstil dan geokomposit yang diberikan pada timbunan cukup signifikan, menaikkan nilai safety factor pada lereng > 1,5 dan pada kondisi gempa > 1.1, artinya keamanan lereng stabil dan potensi longsor rendah. Dari semua jenis perkuatan yang diuji, penelitian ini merekomendasikan geokomposit sebagai material terbaik yang dapat digunakan dan geotekstil woven sebagai alternatifnya. Kata Kunci : Jalan Tol, Geosintetik, Plaxis, Stabilitas, Tanah Timbunan, Soil Replacement.

Item Type: Thesis (S1)
Call Number CD: FT/SIP. 25 059
NIM/NIDN Creators: 41120110097
Uncontrolled Keywords: Jalan Tol, Geosintetik, Plaxis, Stabilitas, Tanah Timbunan, Soil Replacement.
Subjects: 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil
600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil > 624.1 Structural Engineering and Underground Construction/Teknik Struktural dan Konstruksi Bawah Tanah
600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 625 Engineering Of Railroads, Roads/Rekayasa Rel Kereta Api, Jalan > 625.7 Road Engineering/Teknik Jalan Raya
600 Technology/Teknologi > 630 Agriculture and Related Technologies/Pertanian dan Teknologi Terkait > 631 Specific Techniques; Apparatus, Equipment, Materials/Teknik Spesifik; Peralatan, Peralatan, Bahan > 631.4 Soil Science/Ilmu Tanah
Divisions: Fakultas Teknik > Teknik Sipil
Depositing User: khalimah
Date Deposited: 24 Mar 2025 04:56
Last Modified: 24 Mar 2025 04:56
URI: http://repository.mercubuana.ac.id/id/eprint/95038

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