5th CE REFORM
http://hdl.handle.net/123456789/44909
2024-03-28T11:36:40ZStudi pengaruh kemiringan sudut terhadap angka keamanan lereng dengan perkuatan geotekstil
http://hdl.handle.net/123456789/45537
Studi pengaruh kemiringan sudut terhadap angka keamanan lereng dengan perkuatan geotekstil
Irfan, M; Chrismaningwang, Galuh; Ardhana, Pria
A slope is an inclined land surface from a higher point to a lower
point. Slopes are usually formed due to excavation for construction
or naturally formed due to landslides. Slope reinforcement is a way
to ensure stability and safety against landslides. One of the
commonly used reinforcement methods is the use of geotextiles. The
advantages of using geotextiles for reinforcement are ease of
implementation, cost-effectiveness, and the ability to enhance slope
stability actively. The stability analysis of slopes is conducted to
assess whether a slope is stable and safe from landslides. Slope
stability analysis can be performed using empirical or numerical
calculations. Numerical analysis is conducted using the GeoStudio
program. This research studies the influence of slope angles on the
safety factor. The analysis is performed using five different methods:
the Ordinary Method, the Bishop Method, the Janbu Method, the
Morgenstern-Price Method, and the Spencer Method in the
GeoStudio software. Based on the results obtained from three slope
angle variations (60°, 65°, and 75°) under a factory's live load and
using the five methods in the GeoStudio program, the slopes are
classified as unsafe with SF <1.5. After planning reinforcement with
Hibritex Geotextile LP75/75 and applying it to the slopes with the
three angle variations, the resulting safety factors are classified as
stable and safe with a safety factor >1.5.
2023-07-18T00:00:00ZAnalisis numeris pengaruh muka air tanah dan perkuatan geotekstil terhadap stabilitas struktur dermaga
http://hdl.handle.net/123456789/45536
Analisis numeris pengaruh muka air tanah dan perkuatan geotekstil terhadap stabilitas struktur dermaga
Hanif, Muhammad W; Chrismaningwang, Galuh; Dananjaya, Raden H
The internal influences of slope instability, such as increased pore
water within the slope, water flow characteristics, and soil shear
strength, pose significant challenges in slope stability analysis
research. In addition to these factors, the groundwater level also
impacts slope stability. The influence of varying groundwater
levels will be examined in this study to determine the extent of its
effect on slope stability and the corresponding safety factors. With
the advancement of technology, slope stability analysis can be
conducted using applications as assisting tools, commonly known
as numerical methods in slope stability analysis. Geostudio is one
software specifically designed for accurate slope stability analysis.
The analysis process involves utilizing five methods available in
Geostudio, namely the Morgenstern-Price, Spencer, Bishop,
Janbu, and Ordinary methods. In this study, Geotextiles are
chosen as the slope reinforcement method. The parameters include
soil unit weight, internal friction angle, cohesion, Poisson's ratio,
and soil elasticity modulus. Based on the analysis results using the
methods mentioned earlier, for both unreinforced and reinforced
slope conditions and variations in groundwater levels, the most
significant safety factor (SF) obtained for the unreinforced slope
is 0.269 using the Morgenstern-Price method. At the same time,
the highest SF value of 2.503 is achieved for the reinforced slope
using the Bishop method. The significant increase in the safety
factor, approximately tenfold, as a result of geotextile
reinforcement proves its effectiveness in slope stabilization.
2023-07-18T00:00:00ZAnalisis pengaruh kepadatan tanah subgrade dan perkuatan geotekstil terhadap nilai safety factor lereng
http://hdl.handle.net/123456789/45535
Analisis pengaruh kepadatan tanah subgrade dan perkuatan geotekstil terhadap nilai safety factor lereng
Rohman, Minannur; Chrismaningwang, Galuh; Setiawan, Bambang
One of the issues in constructing a structure is the presence of soft
subgrade soil. The purpose of this study is to examine the impact of
subgrade soil density on slope stability through geotextile reinforcement.
The variations of subgrade soil in this research include a 1 m replacement
using fill soil, a 2 m replacement using fill soil, a 1 m replacement using
fill soil and 1 m using limestone, a 1 m replacement using substitute
subgrade soil, a 2 m replacement using substitute subgrade soil, and a 1
m replacement using substitute subgrade soil and 1 m using limestone.
The slope stability analysis was conducted using the SLOPE/W program
in GeoStudio. The analysis results indicate that the slopes without
reinforcement and with variations in subgrade soil density do not yield
safe safety factor values. As the subgrade soil becomes weaker, the safety
factor decreases. The variation of 1 m replacement using substitute
subgrade soil and 1 m using limestone with reinforcement produces the
highest safety factor value, which is 1,84.
2023-07-18T00:00:00ZStudi pengaruh variasi jumlah dan tinggi benching terhadap stabilitas lereng dengan perkuatan geotekstil menggunakan geostudio
http://hdl.handle.net/123456789/45534
Studi pengaruh variasi jumlah dan tinggi benching terhadap stabilitas lereng dengan perkuatan geotekstil menggunakan geostudio
Bagaskara, Imam Z; Chrismaningwang, Galuh; Dananjaya, Raden H
Failure of slope constructions might cause substantial
consequences for the environment and the surrounding
communities. Therefore, accurate analysis is required to identify
factors that affect slope stability. Terracing is suitable for hilly
areas with limited access, while geotextiles function to reinforce
soil and reduce the risk of slope failure. Geotextiles have
advantages in terms of workability and economic aspects. The aim
of this study is to analyze the influence of terracing variations and
the use of geotextiles on slope stability, as well as to compare the
results of slope geometry design analysis using numerical
calculations with the GeoStudio program. The research result
shows that the increase in the safety factor (SF) due to the addition
in the number of terraces from 2 terraces to 3 is 13.95%; from 3
terraces to 4 is 11.26%; from 4 terraces to 5 is 10.12%. The
increase in SF value due to the use of geotextiles on a slope with
2, 3, 4, and 5 terraces are 77.29%, 56.12%, 41.37%, and 32.17%,
respectively. The increase in SF value due to the addition in the
number of terraces and the use of geotextiles from 2 terraces to 3
is 0.34%; from 3 terraces to 4 is 0.74%; and from 4 terraces to 5
is 2.95%
2023-07-18T00:00:00Z