Saraswati, Shyntia Marini (2019) Evaluasi Perencanaan Struktur Dinding Penahan Tanah Tipe Kantilever pada Oprit Underpass Pasuruan Proyek Jalan Tol Gempol-Pasuruan Seksi 3A STA 21+050 - STA 21+100 Menggunakan Program Geo5. Diploma thesis, Institut Teknoogi Sepuluh Nopember.
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Abstract
Jalan tol merupakan jalan bebas hambatan yang dikhususkan untuk kendaraan bersumbu dua atau lebih dengan tujuan mempersingkat jarak dan waktu tempuh menuju suatu tujuan melalui pembayaran tarif sesuai golongan kendaraan. Proyek Jalan Tol Gempol–Pasuruan merupakan salah satu bagian dari proyek pembangunan Jalan Tol Trans Jawa yang berlokasi di Provinsi Jawa Timur. Jalan tol ini didesain menggunakan perkerasan kaku (rigid pavement). Salah satu struktur yang dikerjakan adalah dinding penahan tanah pada oprit Underpass Pasuruan. Dengan kondisi tanah dasar berupa lanau berpasir dan tanah timbunan berupa tanah paras, direncanakan dinding penahan tanah tipe kantilever karena tinggi timbunan eksisting mencapai 9,5 meter. Oleh karena itu digunakan pondasi tiang pancang tipe spun pile untuk meningkatkan stabilitas timbunan dan mencegah terjadinya kelongsoran (sliding). Dalam perencanaan struktur dinding penahan tanah ini diperlukan proses evaluasi melalui analisis data perencanaan. Tahapan penelitian diawali dengan pengumpulan data tanah, parameter tanah, dimensi, serta tulangan eksisting dinding penahan tanah tipe kantilever. Selanjutnya dilakukan pemodelan menggunakan Single Pile Geo5 untuk mengetahui daya dukung tiang. Tahap berikutnya dilakukan pemodelan menggunakan Cantilever Wall Geo5 untuk mengevaluasi stabilitas terhadap daya dukung kelompok tiang, stabilitas terhadap guling, stabilitas terhadap geser, stabilitas terhadap sliding, serta kapasitas tulangan eksisting. Hasil analisis menggunakan Single Pile Geo5 menunjukkan daya dukung tiang sebesar 359,08 ton, safety factor terhadap daya dukung sebesar 2,55 untuk kondisi permanen dan 1,62 untuk kondisi gempa, safety factor terhadap guling sebesar 3,24 untuk kondisi permanen dan 1,69 untuk kondisi gempa, safety factor terhadap geser sebesar 2,34 untuk kondisi permanen dan 1,40 untuk kondisi gempa, penurunan sebesar 0,40 cm, serta safety factor terhadap sliding sebesar 4,10 untuk kondisi permanen dan 1,94 untuk kondisi gempa. Hasil evaluasi juga menunjukkan bahwa beberapa tulangan eksisting tidak memenuhi persyaratan sehingga dilakukan perhitungan alternatif tulangan.
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The toll road is a controlled-access highway designated for vehicles with two or more axles to reduce travel distance and travel time by charging a toll according to the vehicle classification. The Gempol–Pasuruan Toll Road Project is part of the Trans Java Toll Road development located in East Java Province. The highway is designed using rigid pavement. One of the structures constructed in this project is the retaining wall located at the Pasuruan Underpass approach. The subsoil consists of sandy silt, while the embankment material is residual soil. A cantilever retaining wall was selected because the existing embankment reaches a height of 9.5 meters. Therefore, spun pile foundations were used to improve embankment stability and prevent sliding failure. An evaluation of the retaining wall design was carried out through structural and geotechnical analysis. The study began with collecting soil data, soil parameters, dimensions, and the existing reinforcement details of the cantilever retaining wall. The foundation capacity was analyzed using Single Pile Geo5. Subsequently, Cantilever Wall Geo5 was used to evaluate the stability against bearing capacity of the pile group, overturning, sliding, shear, and the adequacy of the existing reinforcement. The analysis results using Single Pile Geo5 indicate a pile bearing capacity of 359.08 tons, a safety factor against bearing capacity of 2.55 under permanent conditions and 1.62 under seismic conditions, a safety factor against overturning of 3.24 for permanent conditions and 1.69 for seismic conditions, a safety factor against sliding shear of 2.34 for permanent conditions and 1.40 for seismic conditions, a settlement of 0.40 cm, and a safety factor against slope sliding of 4.10 for permanent conditions and 1.94 for seismic conditions. The evaluation also shows that several existing reinforcement bars do not satisfy the design requirements; therefore, alternative reinforcement designs were proposed.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSIS 625.17 Sar e-1 2019 |
| Uncontrolled Keywords: | Dinding Penahan Tanah, Oprit, Pondasi Spun Pile, Cantilever Wall, Geo5, Retaining wall, Spun Pile Foundation,Cantilever Wall |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TA Engineering (General). Civil engineering (General) > TA775 Foundations. T Technology > TA Engineering (General). Civil engineering (General) > TA780 Piles and pile-driving |
| Divisions: | Faculty of Vocational > 22401-Civil Infrastructure Engineering (D3) |
| Depositing User: | Shyntia Marini Saraswati |
| Date Deposited: | 07 Aug 2026 05:08 |
| Last Modified: | 07 Aug 2026 05:08 |
| URI: | http://repository.its.ac.id/id/eprint/67279 |
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