Istiqamah, Ismi (2025) Perencanaan Alternatif Perkuatan Lereng pada Badan Jalan Studi Kasus: Longsoran pada Ruas Jalan Tabone-Polewali KM 168+790 s.d. 168+820. Masters thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 6012231073-Master_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
6012231073-Master_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2027. Download (6MB) | Request a copy |
Abstract
Ruas jalan Tabone-Polewali merupakan ruas jalan nasional di Provinsi Sulawesi Barat yang menghubungan Kabupaten Polewali Mandar dan Kabupaten Mamasa. Kondisi medan di sepanjang ruas tersebut berupa lereng yang cukup curam. Pada tahun 2021, telah terjadi longsor di beberapa titik sepanjang ruas jalan Tabone-Polewali, salah satunya terjadi di lokasi KM 168+790 s.d. 168+820 saat kondisi hujan lebat. Penyebab terjadinya longsor diperkirakan karena air yang mengalir dari lereng atas ke lereng bawah tanpa adanya pengaturan limpasan air yang efektif. Belum ada penanganan yang dilakukan pada lokasi tersebut sehingga membahayakan keselamatan pengguna jalan.
Terdapat beberapa alternatif desain untuk penanganan permanen antara lain berupa bored pile dan kombinasi antara geotekstil dan bored pile. Analisa stabilitas lereng dilakukan menggunakan metode analisis kestabilan lereng Finite Element Method (FEM).
Hasil yang diperoleh dari penelitian ini berupa nilai faktor keamanan kondisi eksisting sebesar 0,99 menggunakan metode analisis FEM dimana hal ini menunjukkan kondisi lereng telah longsor. Nilai faktor keamanan untuk desain alternatif menggunakan bored pile sebesar 1,256, dan nilai faktor keamanan untuk desain alternatif menggunakan kombinasi antara geotekstil dan bored pile sebesar 1,256. Kedua nilai tersebut telah memenuhi persyaratan minimal angka keamanan sebesar 1,25. Setelah dilakukan perbandingan efisiensi anggaran dari segi biaya material, disimpulkan bahwa yang paling efisien adalah desain yang menggunakan bored pile.
=======================================================================================================================================
The Tabone-Polewali road section is a national road in the West Sulawesi Province that connects the Polewali Mandar Regency and Mamasa Regency. The terrain along this section consists of fairly steep slopes. In 2021, landslides occurred at several points along the Tabone-Polewali road, one of which happened at KM 168+790 to 168+820 during heavy rain. The cause of the landslides is estimated to be water flowing from the upper slope to the lower slope without effective water runoff management. No handling has been carried out at this location, so it is still dangerous for road users.
There are several alternative designs for permanent mitigation, including bored piles and a combination of geotextiles and bored piles. Slope stability analysis was conducted using the Finite Element Method (FEM) for slope stability analysis.
The results obtained from this study are in the form of a safety factor value for existing conditions of 0.99 using the FEM analysis method, which indicates that the slope has collapsed. The safety factor value for alternative designs using bored piles is 1.256, and the safety factor value for alternative designs using a combination of geotextiles and bored piles is 1.256. Both values have met the minimum safety factor requirement of 1.25. After comparing budget efficiency in terms of material costs, it was concluded that the most efficient is the design using bored piles.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | stabilitas lereng, longsor, bored pile, geotekstil, slope stability, landslides, geotextile |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TE Highway engineering. Roads and pavements > TE175 Road and highway design |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis |
| Depositing User: | Ismi Istiqamah |
| Date Deposited: | 26 Jan 2025 07:20 |
| Last Modified: | 26 Jan 2025 07:20 |
| URI: | http://repository.its.ac.id/id/eprint/116888 |
Actions (login required)
 |
View Item |