Tambunan, Adventus Kristian (2026) Studi Alternatif Perkuatan Tanah Lunak Pada Pekerjaan Timbunan Proyek Jalan Bebas Hambatan IKN Segmen Pulau Balang – Simpang Riko Seksi 5B STA 3+550 – 3+650. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Jalan Bebas Hambatan IKN segmen Jembatan Pulau Balang – Simpang Riko seksi 5B merupakan bagian dari jaringan jalan tol penunjang Ibu Kota Negara Nusantara di Provinsi Kalimantan Timur. Pada ruas Jalan Bebas Hambatan IKN segmen Jembatan Pulau Balang – Simpang Riko seksi 5B, terdapat beberapa lokasi pekerjaan yang melewati kondisi tanah lunak yang perlu dilakukan perbaikan salah satu lokasinya adalah di Sta STA 3+550 – 3+650. Secara detail pada dokumen RTA pada area tersebut direncanakan pekerjaan timbunan tanpa penanganan tanah dasar. Beberapa alternatif metode perbaikan tanah yang dapat dilakukan untuk mengantisipasi masalah stabilitas dan penurunan pada timbunan jalan yang dibangun di atas tanah lunak antara lain berupa substitusi tanah, PVD, dan mini pile. Sedangkan metode perkuatan timbunan yang dapat digunakan untuk mengantisipasi masalah stabilitas timbunan berupa penggunaan geotextile. Dari hasil analisa Pada desain awal tidak memenuhi kriteria desain. Besar pemampatan tersebut tidak memenuhi batas pemampatan yang diijinkan. Setelah dilakukan perhitungan metode alternatif metode yang paling efisisen dan efektif untuk menanggulangi masalah penurunan dan stabilitas yaitu substitusi tanah kedalaman 3m diperkuat dengan geotextile sesuai dengan penilaian dari aspek stabilitas, aspek settlement, aspek biaya konstruksi, aspek waktu pelaksanaan, dan aspek workability.
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The IKN Toll Road, specifically the Pulau Balang Bridge–Riko Interchange Section 5B, is part of the supporting toll road network for the Nusantara National Capital (IKN) in East Kalimantan Province. Along this section, several construction areas are located on soft soil that requires ground improvement, one of which is located at Sta. 3+550 to Sta. 3+650. According to the detailed design presented in the Revised Technical Approval (RTA) documents, the embankment in this area was originally planned to be constructed without any ground improvement treatment. Several alternative ground improvement methods can be applied to mitigate stability and settlement problems for road embankments constructed on soft soil, including soil substitution, Prefabricated Vertical Drains (PVD), and mini piles. In addition, embankment reinforcement methods, such as the use of geotextiles, can be employed to enhance embankment stability. The analysis results indicate that the initial design did not satisfy the required design criteria. The predicted settlement exceeded the allowable settlement limit. After evaluating several alternative methods, the most efficient and effective solution for mitigating settlement and stability problems was determined to be a 3 m deep soil substitution reinforced with geotextile. This alternative was selected based on its performance in terms of stability, settlement, construction cost, implementation time, and workability.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Tanah Lunak, Settlement, Stabilitas, Substitusi, PVD, Mini pile, Soft Soil, Settlement, Stability, Substitution, PVD, Mini pile |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TA Engineering (General). Civil engineering (General) > TA780 Piles and pile-driving |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis |
| Depositing User: | Adventus Kristian Tambunan |
| Date Deposited: | 03 Aug 2026 07:48 |
| Last Modified: | 03 Aug 2026 07:48 |
| URI: | http://repository.its.ac.id/id/eprint/140684 |
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