Analisis Stabilitas Timbunan Pada Badan Jalan Dengan Perkuatan Geotekstil Menggunakan Program Plaxis

Abstract

Padang – Pekanbaru Toll Road is a part of the Trans Sumatra Toll Road Network. In implementations, embankment work is carried out on the road to even out the contours of the land at the construction site. With the accumulation of soil, new embankment slopes will need to be analyzed for stability. In the process, the soil embankment is also reinforced with geotextiles to minimize the occurrence of landslides. This study was analyzed by modeling embankment variations of 4 meters, 6 meters, and 8 meters with geotextile reinforcement using the Plaxis V20 program. For calculations on the original soil conditions were analyzed by the fellenius method. The results of embankment stability analysis in the original soil condition with geotextile reinforcement using the Plaxis V20 program during the construction period obtained the safety factor for the 4-meter embankment without earthquake load of 1.893, the 6-meter embankment load of 1.637, and the 8-meter embankment load of 1.622. While in post-construction, the safety factor for the 4-meter embankment without earthquake loads of 1.651, the 6-meter embankment load of 1.572, and the 8-meter embankment load of 1.512. For the analysis settlement of the original soil condition with geotextile reinforcement for the calculation of excess pore water pressure on a 4-meter embankment, the settlement has a value of 0.207 meters with a time of 88 days, a 6-meter embankment has a value of 0.434 meters with a time of 104 days, and an 8-meter embankment has a value of 0.639 meters with a time of 131 days.