Abstract slope stability analysis is one of the most important topic in geotechnical engineering. Advanced geotechnical finite element modeling using plaxis. Slope provides an easy and accurate way to study a slip surface to find factors of safety against failure, and to check the improvements from reinforcement. The climate is represented by precipitations rate, precipitation duration, and the stability of this unsaturated slope in natural terrain was evaluated based onakey indicator which is safety factor. Geo studio slopew is used for slope stability analysis, edushake for is normally used for earthquake and geo technical analysis, plaxix 2d, plaxis 3d is a finite element package intended for the two dimensional and 3 dimension. The limit equilibrium methods suggested by janbu, 1954, bishop, 1955 and morgenstern and price 1965 are based on the method of slices and have a wide tradition in slope stability analysis. The mechanical parameters of soil layers constituting the slope are evaluated from laboratory. Traditional slope stability analysis is carried out using limit equilibrium methods, an approach that is easy to get familiar with and relatively simple enough to make calculations. Abstract slope stability analysis is one of the most. The study utilizes two le based software slope w and slide and one fe based software plaxis. Slope stability analysis under different soil nailing parameters using the slope w software.
Analysis of embankments with different fill materials. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of. Pm analyses may estimate 5 14% higher fos, depending on the conditions of a dry slope and a. What are the softwares that a student of geotechnical. It performs twodimensional slope stability analysis using the method of slices and presents the results in a clear. This workshop is tailored towards practitioners in the industry to provide a good understanding of the use of plaxis programs both 2d and 3d in the field of slope stability and factor of safety.
Slope stability problems are frequently encountered in the construction of roads, canals, dikes and dams. Slopes stability analysis using the plaxis 2d program and taylors stability equation. The term slope means a portion of the natural slope whose original profile has been modified by artificial interventions relevant with respect to stability. Fe plaxis analyses, the le mpm analyses may estimate 5 14% higher fos, depending on the conditions of a dry slope and a fully saturated slope with. The stability of a slope with reinforcing piles in anisotropic and nonhomogeneous soils is analyzed using the kinematic approach of limit analysis combined with a strength reduction technique. Rs2 formerly rs 2 or phase 2 is a powerful 2d finite element program for soil and rock applications.
The limit equilibrium method is the most common approach for analyzing slope stability in both two and three dimensions. Study of the stability and modeling by finite elements. Slope stability analysis slope stability analysis stabilizing a slope using antislide piles stabilizing a slope using antislide piles inputting geometry by importing data from a dxf file inputting geometry by importing data from a dxf file using standards and analysis settings using standards and analysis settings importing data in txt format. Slope stability analyses using limit equilibrium and strength. Princeton institute of engineering and technology, ghatkesar, hyderabad. Analysis of embankments with different fill materials using plaxis2d. Calculation of slope stability manually withfelleniusmethod b. May 16, 2008 the limit equilibrium method is commonly used for slope stability analysis, being relatively simple compared with finite element analysis.
When coupled with other geo slope software products, it can also model the porewater pressure generation and dissipation in a soil structure in response to external loads using either a fully coupled or formulation. Based on our bestselling slide2 limit equilibrium software, slide3 helps you get even more out of your slope stability analysis. Investigation of dilatancy angle effects on slope stability. The stability analysis is of a homogeneous slope subjected to a horizontal acceleration factor. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes.
Slope failure can be catastrophic and causes loss of life as well as considerable material damage. The purpose of this research project is to compare the student versions of flac, plaxis and slopew and their use in geotechnical stability analysis. Examine slope stability via a number of different analysis methods. Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the stability of earth and rockfill dams, embankments. They are certainly major factors in cut slope stability and in the stability of fill slopes involving both internal and external slope failures. Slope stability using plaxis slope stability using plaxis hfods civilenvironmental op 14 jul 07 08. In this study, we present a slope stability analysis using a. The finite elements software plaxis 2d version 2015 was used to analyze the stability of the slope. Slope stability best slope stability analysis software. They are certainly major factors in cut slope stability and in the stability of fill slopes involving. Slope stability analysis by the limit equilibrium method.
Most slope stability analysis computer programs are based on the limit equilibrium concept for a twoor threedimensional model. It is intended for practising engineers who do already have some prior experience in using plaxis products and who are willing. An attempt has been made to bring out the differences in results of reinforced slope stability analysis obtained from slopew limit equilibrium based and plaxis 2d finite element based. Plaxis workshop on slope stability in plaxis plaxis. Stability analysis of gravity wall using plaxis 2d v. Keywords slope stability, plaxis2d, fill materials i. Rs2 can be used for a wide range of engineering projects including excavation design, slope stability, groundwater seepage, probabilistic analysis, consolidation, and dynamic analysis capabilities. Includes recommendations for analysis, design practice, design charts, tables, and more using a unified approach to address a medley of engineering and construction problems. Naresh analysis of embankments with different fill materials using plaxis2d, international journal of engineering trends and technology ijett, v456,280284 march 2017. Limit analysis of the stability of slopes reinforced with. This paper aims to analyze slope stability based on the numerical simulation using plaxis software. Study of the stability and modeling by finite elements using. Stability analysis of gravity wall using plaxis 2d v8. The limit equilibrium method is commonly used for slope stability analysis, being relatively simple compared with finite element analysis.
Plaxis 2d suite perform 2d analysis of deformation and stability in geotechnical engineering with plaxis 2d suite, a powerful finite element package that includes specialized modules for vibration, groundwater analysis, and heat flow. Slope stability evaluations by limit equilibrium and finite. One of the major features of rs2 is finite element slope stability analysis using the shear strength reduction method. Pdf slopes stability analysis using the plaxis 2d program and. Flac slope can simulate stability problems under a wide variety of slope conditions, including. Jun 14, 2018 advanced geotechnical finite element modeling using plaxis.
I would like to know if someone can help me with the shortcomings of this program or where i can find information about it. The second phase was the numerical analysis part, which were done by using an fem based software, plaxis 2d. The first analysis should be done in the slope stability program, where the active an. Users can perform classic limit equilibrium slope analysis of soil or rock slopes by the method of slices or newer stressbased methods. In slope stability analyses, however, the fos is defined according to the. A slope without piles is considered first and the limit state equation is obtained to determine both the safety factor and the critical sliding surface. Svslope represents the new standard in 2d3d slope stability analysis. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. Calculationof slope stability by using plaxis2d v8. Flacslope is a special, streamlined version of flac for evaluating the factor of safety fos of soil and rock slopes in two dimensions with simple and fast model setup and analysis execution. Conventional methods of slope stability analysis can be divided into three groups. This article focuses on the study of stability of embankments by finite element method of the straps a and j of the toll road of dakardiamniadio on the section malick sypatte doie.
Geo studio slope w is used for slope stability analysis, edushake for is normally used for earthquake and geo technical analysis, plaxix 2d, plaxis 3d is a finite element package intended for the two dimensional and 3 dimension. Slope stability is an intuitive program for the analyses of all types of slopes and retaining walls. Naresh 2 1pg student, department of civil engineering, jntuh, hyderabad, telangana, india 2assistant professor, department of civil engineering, princeton institute of engineering and technology, ghatkesar, hyderabad. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of determining, relatively unambiguously, whether a. Analysis reinforced slopes are currently analyzed using modified versions of the classic limit equilibrium slope stability methods. Deformation analysis the most common application of sigmaw is to compute deformations caused by earthworks such as foundations, embankments, excavations and tunnels. Comprehensive 2d slip surface searching and porewater pressure conditions and innovative 3d spatial analysis allow modeling at new levels. The term landslide refers to a situation of instability affecting natural slopes and involving large volumes of soil. Slope stability evaluations by limit equilibrium and. This leads us to say that the deformations at this ramp are very important especially as. Study of the stability and modeling by finite elements using plaxis 7. Slope stability using plaxis slope stability engineering.
As a major focus area for research and development at rocscience, our suite of slope stability analysis software is highly developed and can meet the demands of even the most advanced geotechnical projects. Both methods were used to analyse homogeneous and inhomogeneous slopes, taking into account the rapid drawdown condition, the undrained clay soils and the presence of tension cracks. Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. Pdf slope stability analysis using numerical modelling. Plaxis 2d abilities can be extended with three additional module. Simplicity and relatively good results are the advantages of these methods. Analysis of embankments with different fill materials using. The effect of pile parameters on the factor of safety of piledslopes. Stage 4 the safety factor rate sf can be seen as follow. Using finite element limit analysis and srm, tschuchnigg et al. Rs2 2d geotechnical finite element analysis rocscience.
Flacslope can simulate stability problems under a wide variety of slope conditions, including. Numerical analysis of climate effect on slope stability. Plaxis 2d and 3d are powerful and user friendly finite element package intended for twodimensional and threedimensional analyses of deformation and stability in geotechnical engineering and rock mechanics. Flac slope is a special, streamlined version of flac for evaluating the factor of safety fos of soil and rock slopes in two dimensions with simple and fast model setup and analysis execution. Finite element analyses of slope stability problems using. Please like and subscribe for an nguyens channel to watch the new videos. Is there any free software available for slope stability analysis. Rs2 is a 2d finite element program that is used to analyze the stability of soil and rock slopes using the shear strength method. Need help working from home with your bentley software.
Similarly, stability check for existing slopes will be done and then factor of safety and failure slip circle will be computed using plaxis 2d. Tagasoft geotechnical software slope stability analysis. This program is used for design of pile walls stabilizing slope movement or increasing safety factor of the slope. A circular or wedgetype potential failure surface is assumed, and the relationship between driving and resisting forces or moments determines the slopes factor of safety. Figure 11 shows a typical case of a fluidfilled tank.
Slope stability can be achieved using different methods. Is there any free software available for slope stability. Flacslope us minneapolis itasca consulting group, inc. Finite element analyses of slope stability problems using non. If sf slope stability analysis after treatment consists of two ways, namely. The following are some typical cases that can be analyzed using sigmaw. Analysis of the static and seismic stability of natural and manmade slopes and.
This engineer manual em provides guidance for analyzing the static stability of slopes of earth and rockfill dams, slopes of other types of embankments, excavated slopes, and natural slopes in soil and soft rock. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. The slip circle and factor of safety of existing slopes were obtained. Xflr5 xflr5 includes the xfoil program for foil analysis, and several 3d analysis methods for planes. Assessment of embankment factor safety using two commercially. The displacementbased finite element code plaxis brinkgreve et al.
Nov 07, 2015 slope stability analysis using optumg2. Slope stability analysis slope stability analysis stabilizing a slope using antislide piles stabilizing a. Slope stability analysis slopew is the leading slope stability software for soil and rock slopes. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. The purpose of this research project is to compare the student versions of flac, plaxis and slope w and their use in geotechnical stability analysis. For comparison purposes, the shapes of critical failure surfaces are overlaid on the plaxis finite element model. This thesis deals with slope stability evolutions carried out by commonly used limit equilibrium le and finite element fe methods. However, for slope stability analyses, it is more common that the fos is related to the characteristic strength parameters of the soil. Fundamentals and methods presents basic principles for the safe design of constructed or natural earth slopes. This paper aims at the two most common methods used for slope stability analysis. This option is fully automated and can be used with various failure criteria, including mohrcoulomb and generalized hoekbrown. It does, however, present a number of disadvantages, such as assumptions that are essential, primarily regarding the critical slip surface and. Geotechnical stability analysis using student versions of. Plaxis is used worldwide by top engineering companies and institutions in the civil and geotechnical engineering industry.
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