Road Embankment Full-Scale Investigation on Soft Soil With Geotextile Stabilization

Abstract

When building roads in swampy areas, several problems include soil with low bearing capacity, scarce and expensive embankment materials are often met. Although local materials can be an alternative for backfill materials, this research focuses on the use of local soil as backfills by utilizing geotextile as soil stabilization. The case study was conducted in Tapin, South Kalimantan. The trial embankment method was used; thus, the road performance was observed primarily in a quite long time -not only because of the soil layers but also because of the traffic above it. Two types of embankment models were used. Embankment 1 utilized the ordinary backfill material transported from off-site. Whereas the backfill used for the Embankment 2 was local material. The number of geotextile layers installed was adjusted to the stability analysis of each embankment. A couple of direct observations were done, such as vertical settlement and horizontal deformation using a settlement plate and inclinometer, respectively. The numeric analysis was also performed using a finite element method to learn the influence of the geotextile toward embankment stability. The result shows that the settlement that occurs to the embankment with the usual backfill material is bigger than the one with the combination of the local soil. There is no difference in the visual values of the road between the ordinary backfill material and the local backfill material.

Visual Evaluation of Urban Streetscape Design Supported by Multisource Data and Deep Learning

“…In the landscape engineering system, landscape resources are divided into 3 categories: human resources, natural resources, and landscape visual resources [ 1 ]. Of these, how to evaluate landscape resources, especially landscape aesthetics, has not yet been agreed upon by the landscape community and is expressed in practice in inconsistent ways [ 2 ].…”

Analisis Penurunan Tanah Timbunan Menggunakan Metode Elemen Hingga pada Ruas Jalan Tolango-Bulontio STA 47+600

“…Penelitan yang pernah dilakukan di luar Indonesia antara lain tentang investigasi skala penuh tanggul jalan pada tanah lunak dengan stabilisasi geotekstil tahun 2020 [8], penggunaan geotekstil anyaman untuk pengurangan penurunan pijakan menyebar pada tanah granular tahun 2019 [9], perilaku lapisan pasir halus yang diperkuat geoteksil prategang yang mendukung pijakan persegi tertanam tahun 2015 [10], studi kasus tanggul yang diperkuat geotekstil di tanah lunak tahun 2002 [11], dan perkuatan geotekstil tanggul di atas gambut tahun 1985 [12].…”

A study on settlements of road embankments on soft ground using vertical drains

“…Other studies on settlement behavior and the comparison between the in-situ measured and numerically simulated settlements of test embankments can be found in [8][9][10][11][12][13]. Despite the fact that much effort has been made into comparing predicted and observed settlement, little has been known about the study on relationships between the aforementioned settlements and the thickness of soft soil and treatment depth, as well as the correlations between observed settlement and embankment height for various treatment solutions.…”