Slope stability analysis is performed to assess the safe design of a humanmade or natural slopes e. There are different research software are there to analyses the slope stability. Lecture capture on slope stability, ordinary method of slices and modified simplified bishops method. An investigation of the natural microscale mechanisms that cause volume change in expansive clays. 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. This chapter provides a basic outline of slope stability analysis. Limit equilibrium design framework for mse structures with. Tagasoft geotechnical software slope stability analysis. Schematic representation of a reinforced slope under seismic excitation the. Fhwa nhi06088 6 slope stability soils and foundations volume i 6 3 december 2006 6. Chapter 10 slope stability analysis nysdot geotechnical page 104 january 21, 2014 design manual 10. Associate professor of civil engineering josh hendrix david jaromin department of civil engineering. As a geotechnical engineer, the software programs i have used most often have to be the ones available for slope stability or for geogrid design of a soil slope, besides using autocad and gint. Ground based lidar rock slope mapping and assessment.
Utexas4 is a computer software application for computing the stability of earth and earthrock slopes and embankments. Fhwa simple span beam approach with apparent earth pressures. Schematic representation of a reinforced slope under seismic excitation the main seismic slope stability assessment. Not all slope stability software is real expensive. Graduate theses and dissertations iowa state university capstones, theses and dissertations 2017 comparison of designanalysis methods for pile reinforced slopes. Slopew stability analysis using 3d seepage results, march 18 march 11, 2020. Stability analysis of dry sandy slopes adjacent to dynamic. The following table summarizes the methods typically included in slope stability software packages. Would like it to be user friendly and possibly have some initial tech support as i am learning to use it. Pdf a comparison between limit equilibrium and finite element. Geotechnical technical guidance manual may 2007 introduction 11 section 1 introduction this geotechnical technical guidance manual tgm provides technical guidance for geotechnical work performed by the federal lands highway flh.
Even though there is past research on lrfd of shallow. Galena is a powerful, comprehensive and easytouse slope stability analysis system developed by geotechnical engineers for geotechnical, mining and civil engineers who want to solve geotechnical problems quickly and easily galena is one of the worlds leading slope stability analysis packages now used in 74 countries, in some of the worlds largest mining operations. Publications geotech federal highway administration. Threedimensional limit equilibrium slope stability benchmarking m. Highway administration fhwa has free downloadable software including. Is there any free software available for slope stability analysis. Jul 07, 2010 new fhwa drilled shaft manual is done. Pseudostatic slope stability procedures are often employed to evaluate the seismic performance of slope systems, at least in the initial evaluation s. Cdot20108 sponsored by colorado department of transportation in cooperation with the u. Most commonly, the design goal for slopes is to economically select i slope angle and ii slope protection measures that will. The name geostase is an acronym for general equilibrium options for stability analysis of slopes and embankments. For detailed design guidance and reference, geotechnical designers are directed to fhwa nhi 05123 soil slope and embankment design. Geostase is a 2d limit equilibrium slope stability analysis software program developed by dr.
Further, for more complex analyses, the use of multiple methods for comparison is prudent. Slide is the most comprehensive slope stability analysis software available, complete with finite element groundwater seepage analysis, rapid drawdown, sensitivity and probabilistic analysis and support design. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of. The example problems consist of 1 a simple slope, 2 an embankment on a very strong foundation, 3 an embankment on a relatively weak foundation, 4 an excavated slope, 5 an embankment on a. The effect of gravity is known, therefore, water is the key factor in assessing slope stability. The factor of safety equations are written in the same form, recognizing whether moment and or force equilibrium is explicitly satisfied. Fhwahi99007 1998 which discusses geologic terms related to rock slope stability. Software for slope stability analysis slope stability. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Slide 2d limit equilibrium slope stability analysis software. Limit states and load and resistance design of slopes and. Slope stability software geotechnical engineering 101. In cohesionless soils, water does not affect the angle of internal friction.
Optimization of stabilization of highway embankment slopes using driven piles phase i by panos d. The procedure described was conducted in each examined test case for several potential failure circles figure 3 and the maximum calculated value of the total reinforcement tension was determined. A series of seven example slope stability problems for the computer program, utexas, is presented. Next to gravity, water is the most important factor in slope stability. I am shopping for software that will perform basic slope stability analysis. Users manual for laterally loaded pile analysis program for the microcomputer, com624p version 2. Even though there is past research on lrfd of shallow foundations and piles, there are very few publications available on lrfd of slopes and retaining structures. The stated goals of this study were to perform a literature. They are certainly major factors in cut slope stability and in. The failure process of a soil slope as shown in fig. Select trial micropile layout location, spacing, batter angles. Rock slope design guide ohio department of transportation. July 7, 2010 robert thompson although i have known for several weeks that the manual was finished i work for one of the authors, after all. In this simulation, the transverse direction of the computational model is constrained to yield a plane strain state 120.
In this research, dynamic compaction method adjacent to slope edge was numerically simulated using 2d plainstrain nite element models. While the software was in the public domain, the versions made available by fhwa are now outdated, do not align with current fhwa recommended guidance, and are compatible with more current computer operating systems. Ge, principal consultant with gregory geotechnical gregeo. A comparison of finite element slope stability analysis with conventional limitequilibrium investigation reginald hammah, rocscience inc. A computer program for slope stability calculations educational version of the utexas4 and texgraf4 software important notice. The paper compares six methods of slices commonly used for slope stability analysis. Utexased4 is a slope stability computer program with a windowsbased graphical user interface for both entering and displaying the input data as well as displaying the results of computations. This report includes discussions of currently available lidar hardware and software, the current state of lidar for highway geotechnical applications rock mass characterization, rockfall characterization, asbuilt 3d measurements, best. Comparison of several analysis methods blums method, fhwa approach, simple span beam approach of a 50ft excavation. Fhwainjtrp20085, spr2634 final report limit states and load resistance design of slopes and retaining structures introduction the primary goal of this report was to develop load and resistance factor design lrfd methods for slopes and retaining structures. Foundation design of embankments on varved clays 1977. The term slope means a portion of the natural slope whose original profile has been modified by artificial interventions relevant with respect to stability.
Please note that software uses the effective vertical stress at subgrade to find an equivalent soil unit weight, water pressures are added separately depending on water condition assumptions. Quick comparison between lrfd and asd of srw using msew. Soils and foundations testing experience theory lesson 06 chapter 6 slope stability. Comparison of apparent lateral earth pressure coefficients with basal stability index fhwa 2004. Download geotechnical engineering software slide 8. The graphics and the pointandclick data input are also very good and makes the program very easy to use. Slope stability analysis slopew is the leading slope stability software for soil and rock slopes. Subsurface exploration, testing, slope stability, embankments, cut slopes, shallow. Performancebased assessment of the seismic pseudostatic. It is concerned with 1 the characteristics and critical aspects of various types of slope stability problems, 2 geologic studies and site investigation procedures, 3 methods of designing slopes, including field observations and experience, slope stability charts, and detailed analyses, 4 factors of safety, and 5 methods of stabilizing. The fhwa has discontinued the distribution of all other software through this website. Galena is a powerful, comprehensive and easytouse slope stability analysis system developed by geotechnical engineers for geotechnical, mining and civil engineers who want to solve geotechnical problems quickly and easily.
Fredlund golder associates, saskatoon, canada abstract slope stability analyses have been performed using various software packages on a routine basis in geotechnical. Ui it fmi iuniversity of missouri adsc micropile design and construction seminar las vegas, nevada april 34, 2008 outline background typical implementation construction sequenceconstruction sequence stability analysis issues prediction of resistance for micropiles. I need software to calculate the factor of safety and carry out a kinematic analysis for different landslide types. 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. Is there any free software available for slope stability. Stability of slope models under di erent compaction energies and slope geometries at the same initial static factor of safety fs was investigated considering. The purpose of this manual is to provide engineers and geologists involved in highway design and construction with a common understanding and approach to slope stability analysis for highway projects. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability.
It is difficult to know how to adequately benchmark slope stability software package as the new features are often implemented faster than the related. Utexased4 slope stability software for educational purposes. Lateral squeeze is more closely related to the evaluation of. Engineers completing slope stability calculations should be familiar with the assumptions and limitations of the methods selected. Software for slope stability analysis based on the limit equilibrium analysis of the. For those wishing to find fhwa software and related publications, it is available from mctrans or pctrans. This type of analysis is also utilized to determine. Slope stability is a major concern for geotechnical and mining engineers worldwide, and consequently, a great deal of effort at rocscience is dedicated to slope stability analysis software. Research, a quarter century of geotechnical research, 1998, fhward98 9. High resolution sensing techniques for slope stability studies, final. Comparison of five different methods for determining pile. May 26, 2015 lecture capture on slope stability, ordinary method of slices and modified simplified bishops method.
Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. Department of transportation federal highway administration december 2010. The software in general is very good and ties in well with the way we do things here. The authors of the 1st and 2nd editions prepared by the fhwa in 1982 and 1993. Slope stability is the resistance of inclined surface to failure by sliding or collapsing. The term landslide refers to a situation of instability affecting natural slopes and involving large volumes of soil. Plaxis 2d and 3d is best suited slope stability software if you wish working with finite element. Utexas analyze the stability of complex slopes software. There is plenty of software available these days to do pretty much everything one can think of. It provides guidance for understanding and applying policies, standards and criteria in recognition of the need to. Computer software is used by mdts project geotechnical specialists in areas ranging from pile design to the evaluation of slope stability.
Comparison of slope stability methods of analysis1 received october 12, 1976 accepted april 4, 1977 the papercompares six methods ofslicescommonly sed for slopestability analysis. The program combines an intuitive user friendly interface and the analytical philosophy behind the popular slope stability program, stabl, developed at purdue university. Comparison of designanalysis methods for pile reinforced slopes. What is the best software to analyse the slope stability. This software and all associated electronic media and documentation are provided for use by the faculty and students of the licensed university or educational institution for educational purposes only. The program can be used to the stability factor of safety for inhomogeneous slopes and embankments using both circular and noncircular slip surfaces. Wright of shinoak software, who is wellrecognized as one of the leading experts in solving problems in soil strength and slope stability duncan and wright, 2005.
A detailed comparison of limit equilibrium methods is discussed in fhwanhi 05 123. In order to investigate the influence of different soil nailing parameters on the safety factor of a slope, the slope stability is analyzed by the geostudio software with different analysis methods. Of the software which is currently available from rocscience, half of all programs are either specifically dedicated to slope stability analysis ie. The optional modules can be included in the deepex ultimate and can help you get the most out of your software version. Xstabl provides an integrated environment for performing slope stability analyses on an ibm personal computer, or compatible. Comparison of designanalysis methods for pile reinforced. Deployment of the geosynthetic reinforced soil integrated bridge system from 2011 to 2017, synthesis. This software has greatly simplified design and evaluation by allowing the mdt staff to quickly and efficiently evaluate the effects of soil. This step is used to determine axial loads transferred to the micropiles. What is the best software to analyse the slope stability researchgate. Chapter 15 rock slope design nysdot geotechnical page 155 january 14, 2015 design manual the detailed requirements for the design of rock cuts are provided in fhwahi99007, rock slopes reference manual, publication dated 1998. Comparison of five different methods for determining pile bearing capacities prepared for wisconsin highway research program andrew hanz whrp program manager 3356 engineering hall 1415 engineering dr. Treat micropilecap beam system as a structural frame and apply the required resistance as a uniformly distributed load acting downslope and parallel to the slide surface. Asd and lrfd of reinforced srw with the use of software program msew3.
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