This paper presents a numerical study to assess slope stability in lebanon under seismic loading. Seismic slope stabilitygeotechnical earthquake engineering. Slopew, slide are commercially available to perform the required pseudostatic limit equilibrium. Several results are presented in order to illustrate the influence of seismic forces on slope stability. Simplified design methods seismic slope stability analysis. Ground vibration and air overpressure levels measured by portable seismographs often provide the only record of an event. Jun 19, 2015 learn how to incorporate seismic and dynamic considerations in a slope w 2007 analysis. Slope stability analysis by the limit equilibrium method books. In this work, the highresolution dem was served as the ground surface and the isopachs of. Slope stability analysis by the limit equilibrium method.
Moreover, a suitable procedure based on the assessment of earthquakeinduced permanent displacement is proposed for the design of reinforced slopes in seismically active areas. Learn how to incorporate seismic and dynamic considerations in a slope w 2007 analysis. The limit equilibrium method is the most common approach for analyzing slope stability in both two and three dimensions. Our solutions cover every stage of your data, from. Slope stability is an intuitive program for the analyses of all types of slopes and retaining walls. An effective method to assess the seismic slope stability is of great importance for the disaster prevention and mitigation in the iburi region.
Consequently, slope stability software became available soon after the advent of computers. 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. The aim of this work is to utilize the scoops3d to. Slope stability software carries out the analysis of soil or rock slope stability both under static and seismic conditions, using the limit equilibrium methods of. Learn how to incorporate seismic and dynamic considerations in a slopew 2007 analysis.
The profile was analyzed with the slope stability analysis software rocscience slide, using eight different methods, varying the water table in two meter increments and the seismic coefficient in increments of. The sarma method has been extensively used in seismic analysis software for many years and has been the standard practice until recently for seismic slope stability for many years similar to the mononobeokabe method for retaining walls. Slope stability analysis under seismic load by vector sum. Slide2 includes builtin finite element groundwater seepage analysis, probabilistic analysis, multiscenario modeling, and support design. They are certainly major factors in cut slope stability and in. A prerequisite in slope stability analyses is that the internal structure and the mechanical properties of the soil or rock mass of the slope, are known or can be estimated with a reasonable degree of certainty. Design and analyze planar rock slopes with rocplane, a quick and easy tool to help you build planar models and visualize them in 2d and 3d. Probability, seismic tests, slopes, slope stability, embankment dams, centrifuge models, dam foundations, seismic effects conference information geocongress 20 march 37, 20 san diego, california, united states. Seismic methods are often the most suitable because the measurements depend on the mechanical properties that are also important in the mechanical calculation of slope stability analyses. Slope stability software carries out the analysis of soil or rock slope stability both under static and seismic conditions, using the limit equilibrium methods of fellenius, bishop, janbu, bell, sarma. 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. I need software to calculate the factor of safety and carry out a kinematic analysis for different. Probability, seismic tests, slopes, slope stability, embankment dams, centrifuge models, dam foundations, seismic effects conference information geocongress 20 march 37. The method of sarma is a simple, but accurate method for the analysis of slope stability, which allows to determine the horizontal seismic acceleration required so that the mass of soil, delimited by the sliding.
Engineers analyze slope to calculate quantitative indicators. Roctopple makes it easy to visualize the slope failure in both 2d and 3d. The sarma method has been extensively used in seismic analysis software for many years and has been the standard practice until recently for seismic slope stability for many years similar to the. The overstress of a slope or the reduction in the shear strength of its soil may cause a slope to displace. Seismic stability analysis of reinforced slopes sciencedirect. Analyses of seismic slope stability problems using limit equilibrium methods in which the inertia forces due to earthquake shaking are represented by a constant horizontal force equal to the weight of the. Seismic analysis software geosonicsvibratech has unparalleled experience in the development of analysis software, programming options and equipment for virtually any seismic application. However, for rock slopes, the earthquake waves might approach the outcrop still with a evidently oblique direction. A prerequisite in slope stability analyses is that the internal structure and the mechanical properties of the soil or rock mass of the slope, are known or can be estimated with a reasonable. Cads reslope is a leading slope stability software package for calculating the factor of safety of earth slopes. Geological survey has advantages in seismic slope stability calculation on a regional scale, as it can compute the factor of safety of millions of potential landslides based on a predisposed dem utilizing 3d method of columns approach reid et al.
These charts can be useful in the preliminary earthquake resistant. Moreover, a suitable procedure based on the assessment of earthquakeinduced permanent. I am looking for the best slope stability software, for the best price, that also calculates fos for reinforced slopes as well as for seismic loading conditions. Jul 11, 2018 seismic stability of slopes has been traditionally analyzed with vertically propagated earthquake waves. Engineers analyze slope to calculate quantitative indicators of performance such as factor of safety, lateral deformation, probability of failure and reliability index. Soilvision provides a comprehensive suite of 2d and 3d geotechnical software.
Earthquake effects, external loading, groundwater conditions, stabilization forces i. Typical slope stability software can analyze the stability of generally layered soil slopes, embankments, earth cuts, and anchored sheeting structures. Renowned for market leading limit equilibrium slope stability analysis, this fully integrated portfolio offers reliable solutions. Slope stability software slope stability engineering engtips. External loading, groundwater and support can all be modeled in a variety of ways. Retaining walls finite element finite difference slope stability tunneling underground structures constitutive modeling soil behavior. This program, based on the finite element method, can model and analyze a wide range of geotechnical tasks, including terrain settlement, sheet pilediaphragm walls, slope stability, excavation analys. Slopew is the leading slope stability software for soil and rock slopes. An effective method to assess the seismic slope stability is of great. The software in general is very good and ties in well with the way we do things here. Tagasoft geotechnical software slope stability analysis.
Dec 16, 2016 slope stability by geo slope software please like and subscribe for an nguyens channel to watch the new videos. Slide2 can be used for all types of soil and rock slopes, embankments, earth dams, and retaining walls. Seismic slope stability analysis geotechsimulation. Seismic slope stability tim mccrink seismic hazards mapping program california geological survey 100th anniversary earthquake conference commemorating the 1906 san francisco earthquake april 18 22, 2006. However, for rock slopes, the earthquake waves might approach the outcrop still. Using the ab walls design software in conjunction with ressa global stability modeling software, jimmy was able to confidently design a complicated. The aim of this work is to utilize the scoops3d to conduct the slope stability analysis in atsuma, hokkaido, where destructive landslides were resulted during the iburi earthquake. Geophysical methods to determine the internal structure of a soil or rock mass may be used for this purpose. By using the stability number n and the pseudostatic approach together with the assistance of flacslope software, design chart for. Slope w can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. Threedimensional seismic slope stability assessment with the. Is there any free software available for slope stability analysis. The program analyses the behaviour of the rock slopes under seismic conditions.
Jul 25, 2019 an effective method to assess the seismic slope stability is of great importance for the disaster prevention and mitigation in the iburi region. We have slide version 5 at the office but this is a pseudo static slope stability program. Seismic stability of jointed rock slopes under obliquely. A sliding block is used to estimate a slope behavior during earthquakes and analyze permanent deformation. Engineers completing slope stability calculations should be familiar with the assumptions and limitations of the methods selected. The graphics and the pointandclick data input are also very good and makes the program very easy to use. Chapter 6 seismic design washington state department of. Fundamentals and methods presents basic principles for the safe design of constructed or natural earth slopes. Slide2 formerly slide is a 2d slope stability program for evaluating the safety factor or probability of failure, of circular and noncircular failure surfaces in soil or rock slopes. A numerical model for estimating seismic displacements of reinforced steep. Slide2 is simple to use, and yet complex models can be created and analyzed quickly and easily. Seismic stability of slopes has been traditionally analyzed with vertically propagated earthquake waves.
Various geophysical methods and their merits for slope stability analyses. Cads reslope is a leading slope stability software package for calculating. The study was performed using flac3d commercial software. For simpl e homogeneous slope masses, existing seismic slope stability charts may be used, 40 such as those presented by leshchinsky and san 1994 and loukidis et al. The basic software module deals with unreinforced slope analysis using bishops simplified method and. Fhwa nhi06088 6 slope stability soils and foundations volume i 6 3 december 2006 6. Renowned for market leading limit equilibrium slope stability analysis, this fully integrated portfolio offers reliable solutions for both common and complex problems. Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, pore. Therefore, slope stability analysis under seismic load is more complex than that under static load. Seismic slope stability tim mccrink seismic hazards mapping program california geological survey 100th anniversary earthquake conference commemorating the 1906 san francisco earthquake april. Slide2 is a powerful, userfriendly, 2d slope stability analysis program using limit equilibrium method. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. To investigate the impact of obliquely incident earthquake excitations, the input method for sv and p waves with arbitrary incident angles is conducted, respectively, by.
Slope stabilization in a seismic region allan block. Gslope allows geotechnical engineers to carry out limit equilibrium slope stability analysis of existing natural slopes, unreinforced manmade slopes, or slopes with soil reinforcement. Threedimensional seismic slope stability assessment with. The introduction of powerful desktop personal computers in the early 1980s made it economically viable to develop commercial software products based on these. Engine is based on the slammer program which has been incorporated into slide2. Slope stability by geo slope software please like and subscribe for an nguyens channel to watch the new videos. Simplified design methods seismic slope stability analysis posted february 16, 2018 april 25, 2018 amin current state of practice in north america to evaluate the performance of slopes during earthquake loading is to use one of the following approaches. Rockplane is a software tool for the evaluation of localized instability rocky elements affected by seismic movements andor by presence of water pressures within intersurface fractures. Further, for more complex analyses, the use of multiple methods for. The basic software module deals with unreinforced slope analysis using bishops simplified method and circular slip surfaces.
By using the stability number n and the pseudostatic approach together with the assistance of flac slope software, design chart for the seismic coefficient, kh of 0. The basic software module deals with unreinforced slope analysis using bishops. Kramer, department of civil engineering, university of washington. Slope stability analysis slope w is the leading slope stability software for soil and rock slopes. The method of sarma is a simple, but accurate method for the analysis of slope stability, which allows to determine the horizontal seismic acceleration required so that the mass of soil, delimited by the sliding surface and by the topographic profile, reaches the limit equilibrium state critical acceleration k c and, at the same time, allows. Roctopple is an interactive software tool for performing toppling analysis and support design of rock slopes. Pdf probabilistic seismic slope stability analysis and design.
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