Analisis Stabilitas Lereng Timbunan Perkuatan Geotextile Dengan Metode Limit Equilibrium Dan Finite Element Pada Ruas Jalan Planjan - Baron - Tepus Sta 8+800 S/D 9+675

Nurwansyah, Nurwansyah (2022) Analisis Stabilitas Lereng Timbunan Perkuatan Geotextile Dengan Metode Limit Equilibrium Dan Finite Element Pada Ruas Jalan Planjan - Baron - Tepus Sta 8+800 S/D 9+675. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pembangunan Jalan Planjan – Baron – Tepus berada pada Kabupaten Gunung Kidul, D.I Yogyakarta. Panjang penangan pembangunan jalan baru adalah 9.725 km dan lokasi yang dijadikan objek penelitian ini berada pada sta 8+800 s/d sta 9+675. dari sudut pandang topografi, kondisi existing ruas jalan tersebut berada di daerah perbukitan, sehingg. Selain itu, dengan adanya ketinggian timbunan hingga mencapai 21 m, keterbatasan lahan (ROW) dan variasi kemiringan lereng maka diperlukan analisa stabilitas lereng, dimana jenis tanah dasarnya berupa limestone. Pada penelitian ini juga dilakukan pengujian Direct Shear dan CPT untuk menentukan nilai kohesi (c ) dan sudut geser (φ) yang akan digunakan pada analisa stabilitas lereng dengan menggunakan FEM dan LEM. Penelitian ini diharapkan dapat menghasilkan nilai stabilitas lereng yang akurat sesuai dengan kondisi aktual timbunan di lapangan. Setelah dilakukan analisa stabilitas lereng diperoleh hasil analisa yang menunjukan bahwa FEM memiliki nilai Safety Factor (SF) yang lebih kecil daripada LEM, dimana sta 9+500 s/d 9+675 memiliki SF >1.5 sedangkan sta 8+800 s/d 8+875 memiliki nilai SF < 1.5, sehingga memerlukan perkuatan lereng pada timbunan, dengan jumlah perkuatan sebanyak 2 lembar. ======================================================================================================= The construction of the Planjan – Baron – Tepus road is located in Gunung Kidul Regency, D.I Yogyakarta. The length of the handler for the construction of new roads is 9,725 km and the location used as the object of this research is at sta 8+800 to sta 9+675. from a topographical point of view, the condition of the road segment is in a hilly area, so that In addition, with the embankment height of up to 21 m, limited land (ROW) and slope, a slope analysis is required, where the type of subgrade is limestone. In this study, Direct Shear and CPT tests were also carried out to determine the value of cohesion (c) and shear angle (φ) to be used in slope assessment using FEM and LEM. This research is expected to produce an accurate slope value according to the actual condition of the embankment in the field. After the inspection took place, the analysis results showed that FEM had a Safety Factor (SF) value that was smaller than LEM, where sta 9+500 to 9+675 had SF >1.5 sta 8+800 to 8+ 875 had SF value < 1.5, thus requiring slope reinforcement on the embankment, with a total of 2 pieces of reinforcement.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Slope stability analysis, limit equilibrium method, finite element method, limestone embankment, geotextile, plaxis, geo5.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
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: Nurwansyah Nurwansyah
Date Deposited: 10 Feb 2022 04:05
Last Modified: 10 Feb 2022 04:05
URI: https://repository.its.ac.id/id/eprint/93435

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