Analisis Pemilihan Konstruksi Badan Jalan pada Tanah Lunak di Proyek Pembangunan Jalan Lingkar Utara Lamongan Seksi 1 STA 0+400 s.d. STA 0+426

Barimbing, Fanny Rumintha Br (2025) Analisis Pemilihan Konstruksi Badan Jalan pada Tanah Lunak di Proyek Pembangunan Jalan Lingkar Utara Lamongan Seksi 1 STA 0+400 s.d. STA 0+426. Masters thesis, Institut Teknologi Sepuluh Nopember.

Text 6012231076-Master_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2027. Download (6MB) | Request a copy

Abstract

Pembangunan Jalan Lingkar Utara Lamongan direncanakan dibangun pada tanah lunak. Dari hasil penyelidikan tanah diketahui kondisi tanah dasar memiliki konsistensi very soft to soft hingga kedalaman 18 meter. Oleh karena itu, perlu dilakukan rekayasa perbaikan tanah dasar sebagai pondasi jalan agar mendapatkan stabilitas tanah yang baik. Rekayasa perbaikan tanah yang direncanakan oleh Balai Besar Pelaksanaan Jalan Nasional Jawa Timur – Bali adalah dengan penggunaan preloading yang dikombinasikan dengan PVD sedalam lapisan tanah kompresibel untuk mempercepat proses konsolidasi.
Pada STA 0+400 s.d. STA 0+426 terdapat kabel dari Saluran Udara Tegangan Tinggi (SUTT) yang melintang jalan dengan ketinggian 18 meter dari platform. Sehingga keterbatasan ruang bebas vertikal menjadi tantangan untuk melakukan perbaikan tanah sesuai desain yang direncanakan. Dalam penelitian ini, diusulkan tiga alternatif yang akan dianalisa untuk diterapkan pada lokasi SUTT tersebut. Alternatifnya berupa preloading dan PVD tidak sedalam compressible soil, perkuatan matras-cerucuk bambu dan penggunaan box culvert. Tujuan akhir dari penelitian ini untuk melihat alternatif yang paling efektif dan efisien untuk diusulkan pada segmen tersebut.
Ditinjau dari segi efektivitas, hasil analisis menunjukkan bahwa alternatif soil improvement preloading dengan PVD sedalam 9 meter, preloading dengan PVD sedalam 6 meter, perkuatan matras-cerucuk bambu dan penggunaan box culvert memenuhi persyaratan penurunan/rate of settlement untuk jalan raya. Faktor keamanan pada masing-masing alternatif adalah 1,408, 1,384, 1,446 dan 1,341. Jika ditinjau dari segi efisiensi, kombinasi preloading dengan PVD sepanjang 6 meter merupakan alternatif yang paling efisien dimana kebutuhan biaya lebih rendah 15,90% dari metode soil improvement sesuai desain rencana.
========================================================================================================================================
The construction of the Lamongan North Ring Road is planned to be built on soft soil. From the results of the soil investigation, it is known that the subgrade condition has a very soft to soft consistency to a depth of 18 meters. Therefore, it is necessary to improve the subgrade soil as a road base in order to obtain good soil stability. The soil improvement planned by the National Road Implementation Agency of East Java - Bali Region is the use of preloading combined with PVD as deep as the compressible soil layer to accelerate the consolidation process.
At STA 0+400 to STA 0+426 there are cables from the High Voltage Air Line (SUTT) that cross the road with a height of 18 meters from the platform. So that the limited vertical free space becomes a challenge to carry out soil improvement according to the planned design. In this research, three alternatives are proposed to be analyzed to be applied at the SUTT location. The alternatives are preloading and PVD not as deep as compressible soil, reinforcement of pile matress bamboo and the use of box culvert. The final objective of this study is to see the most effective and efficient alternative to be proposed for the segment.
In terms of effectiveness, the results of the analysis show that the alternative soil improvement preloading with PVD 9 meters deep, preloading with PVD 6 meters deep, reinforcement of pile matress bamboo and the use of box culvert meet the requirements of settlement for highways. The factors of safety for each alternative are 1.408, 1.384, 1.446 and 1.341. In terms of efficiency, the combination of preloading with 6 meters of PVD is the most efficient alternative where the cost requirement is 15.90% lower than the soil improvement method according to the design plan.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	tanah lunak, rate of settlement, faktor keamanan, soil improvement, biaya pelaksanaan soft soil, rate of settlement, safety factor, soil improvement, cost
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TE Highway engineering. Roads and pavements > TE250.P475 Pavements--Design and construction--Estimates.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Fanny Rumintha Br Barimbing
Date Deposited:	26 Jan 2025 02:57
Last Modified:	26 Jan 2025 02:57
URI:	http://repository.its.ac.id/id/eprint/116856

Actions (login required)

View Item