Alternatif Metode Dan Perbaikan Tanah Lunak Pada Jalan Tol Akses Patimban Sta 28+305 – STA 28+450

aziz, Irfan Ulumuddin (2025) Alternatif Metode Dan Perbaikan Tanah Lunak Pada Jalan Tol Akses Patimban Sta 28+305 – STA 28+450. Masters thesis, Institu Teknologi Sepuluh Nopember.

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Abstract

Jalan Tol Akses Patimban merupakan salah satu Proyek Strategis Nasional yang menghubungkan Pelabuhan Patimban dengan Jalan Tol Cikopo-Palimanan (Cipali) dengan panjang total 37.05 km. Salah satu segmen tol yang sedang dibangun berada di Kabupaten Subang, menghubungkan jalan Tol Cikampek
Palimanan dengan Pelabuhan Patimban dengan total panjang 5,5 km. Hasil penyelidikan tanah menunjukkan bahwa tanah dasar jalan tol di segmen tersebut merupakan jenis tanah lempung, dimana konsistensi lunak hingga sedang berada pada kedalaman hingga 9 m. Konstruksi jalan tol segmen ini ditargetkan selesai dalam waktu 1 tahun. Dengan batasan waktu konstruksi yang singkat tersebut, perencanaan eksisting akses jalan tol Patimban Paket 3 direncanakan menggunakan preloading tanpa PVD (Prefabricated Vertical Drain) dan perkuatan geotextile. Hal ini menyebabkan munculnya keraguan bahwa proses pemampatan tidak dapat mencapai derajat konsolodasi 90% selama masa konstruksi serta menyebabkan rate of settlement pada masa layan tidak memenuhi nilai yang diijinkan PU Bina Marga. Oleh sebab itu, tujuan dari penelitian ini adalah melakukan evaluasi terhadap desain eksisting dan menentukan metode perbaikan tanah agar timbunan jalan Akses Tol Patimban memenuhi syarat pemampatan dan syarat stabilitas.
Hasil analisis menunjukkan bahwa timbunan jalan memenuhi faktor keamanan ijin (SF) sebesar 1.5. Tetapi, pemampatan perencanaan eksisting tidak mencapai U90 dalam kurun waktu 1 tahun masa konstruksi serta nilai rate of settlement yang terjadi pada masa layan tidak memenuhi nilai yang diijinkan PU Bina Marga. Untuk mempercepat proses pemampatan dan menghilangkan rate of settlement, diperlukan penyempurnaan desain eksisting berupa penambahan tinngi timbunan preloading yang dikombinasikan dengan pemasangan PVD pola
segiempat berjarak 1.75 m dengan kedalaman penanaman 9 m. Percepatan pemampatan menggunakan soil replacement tidak dapat digunakan karena tidak dapat mencapai U90 selama masa konstruksi 1 tahun.
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The Patimban Access Toll Road is one of the National Strategic Projects that connects Patimban Port with the Cikopo-Palimanan (Cipali) Toll Road, with a total length of 37.05 km. One of the toll segments currently under construction is located in Subang Regency, connecting the Cikampek-Palimanan Toll Road to Patimban Port with a total length of 5.5 km. Soil investigation results indicate that
the subgrade along this toll road segment consists of clay, with soft to medium consistency extending to a depth of up to 9 meters. The construction of this segment
is targeted to be completed within one year. Given the limited construction timeframe, the existing design of the Patimban Access Toll Road Package 3 is planned to utilize preloading without Prefabricated Vertical Drains (PVD)
combined with geotextile reinforcement. This raises concerns that the consolidation process may not achieve a 90% degree of consolidation (U90) within the one-year construction period, and that the post-construction settlement rate during the service life may not comply with the permissible limits set by the Ministry of Public Works and Housing (PU Bina Marga). Therefore, the objective of this study is to evaluate the existing design and determine the appropriate ground improvement method to ensure that the embankment of the Patimban Access Toll Road meets both consolidation and stability requirements. The analysis results show that the embankment design satisfies the required safety factor (SF) of 1.5. However, the planned consolidation under the
existing design does not achieve U90 within the one-year construction period, and the post-construction settlement rate exceeds the allowable limits set by PU Bina
Marga. To accelerate consolidation and eliminate excessive settlement, the design improvement involves increasing the preloading embankment height combined with the installation of PVDs in a square pattern with 1.75 m spacing and a
penetration depth of 9 m. The use of soil replacement as a method to accelerate consolidation is deemed ineffective, as it cannot achieve U90 within the one-year construction timeframes

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Tanah lunak, Settlement, PVD, penggantian tanah
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis 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
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Irfan Ulumuddin Aziz
Date Deposited:	04 Aug 2025 12:15
Last Modified:	04 Aug 2025 12:15
URI:	http://repository.its.ac.id/id/eprint/126052

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