Calculate the draft mark the readings at the end of the voyage, assuming that there is no. Application note slope stability analysis worked example 1 introduction this note describes the typical steps followed in setting up and analysing a slope stability problem with limitstate. The slope section is drawn up and dimensions and parameters are fed in to the microsoft excel based program for stability calculations and comparisons of factors of safety using different methods of analysis. Global stability with relict slip surface in this scenario, the presence of the relict slip surface was assumed. Mar 21, 2016 the aims of slope stability analyses are to understand the development and form of natural slopes and the processes responsible for different natural features. Box 366, beijing, peoples republic of chitla received september 1, 1987 accepted april 11, 1988. The kinematic approach of limit analysis is explored in threedimensional 3d stability analysis of slopes. Performance of inclining tests and lightweight calculations. The effect of water on cut and fill slope stability is briefly discussed below. 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. Ecoslopes project for routine stability analysis and the assessment of the contribution of vegetation to slope stability. Pdf geotechnical approaches for slope stabilization in. Imo regulations including solas, stockholm agreement, hsc code, national and regional agreements present a complex picture of stability requirements.
Slope stability analysis geotechnical design manual m 4603 chapter 74 december 2006 slope stability analysis detailed assessment of the groundwater regime within and beneath the slope is also critical. Then, it calculates for this slip circle the corresponding critical seismic coefficient for which the factor of safety is 1. In recognition of his years of guidance and support as a mentor and friend to geotechnical specialists in the northwest, we dedicate these volumes, a summary of what we have. Corestones at the slope face clayinfilled relict joint parallel to the slope face relict joint surfaces within weak matrix fig. In california practice, the acceptable vertical depth of soil saturation is 1. Section j dip, sheets 11 to 18 slope stability calculations. Pdf numerical methods in analysis of slope stability. Slope stability verification hand calculation zip file. Dec, 2014 ok i know this should be easy but its been a few years since my physics lessons at college and im stumped. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Slope stability computations transportation research board. Slope stability evaluations by limit equilibrium and.
Step 2 analyze the stability of the slope for different strength properties. Numerical methods in analysis of slope stability adila nuric 1, samir nuric 2, lazar kricak 3, resad husa gic 4 1,2 faculty of mining, geology and civil engineering, unive rsity of tuzla. Comparison of weight coating designs using the two design level analysis tools described in the above. Slip4ex routine limit equilibrium slope stability analysis. Slope stability calculations using limit analysis slope. The verification examples are found in the following pdf documents. Slope stability and groundwater seepage analysis examples are documented. That means that a block is placed under one edge of a box. Example application 1 slope stability for a cohesive and. Application note slope stability analysis worked example 4. Im working on a tool that will tell me if a box will fall over when it is subjected to an edge drop test. Present and future possibilities of software to predict the stability of. This is the first step in calculating the vessels centre of gravity g.
Table 3 shows the calculations when the trial factor of safety is 1. Slope stability analysis is a keen area of interest to researchers of geotechnical. Evaluation of minimum factor of safety in slope stability. A computer program for slope stability calculations educational version of the utexas4 and texgraf4 software important notice. 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. Erik eberhardt university of british columbia geological engineeringearth and ocean sciences, ubc, 6339 stores rd. Experience in using the variational method in slope stability calculations. Limit analysis and stability charts for 3d slope failures. Geotechnical approaches for slope stabilization in residential area.
Application note slope stability analysis worked example 2. An analysis of stability was applied to a slope, of complex geometry, composed of alternating sandstone and marls using finite elements and limit equilibrium methods. Detailed pieziometric data at multiple locations and depths within and below the slope will likely be needed. Html 5capable browser required for graphical output. A technique for the calculation of slope stability based upon the assumption of a plane surface of failure through the toe of the slope has been proposed by culmann see taylor, 1948.
In the project level property editor, under water table set use r u coefficientto true, the av. Section j dip, sheets 7 to 10 slope stability calculations. The majority of the risk factors and dose coefficients were calculated using ornls dcal software in the manner of federal guidance report 12 and federal guidance report for. On the other end, engineers may develop a set of scantling calculations and drawings that show every single deck, every single bulkhead, all of it. The calculator searches the circular slip surface for which the factor of safety is minimal. Apr 26, 2012 by using the upper bound theorem of limit analysis, and assuming the yielding of soil with its partial shear strength, stability calculations have been performed for determining the factor of safety of soil slopes. To assess the possibility of landslides involving natural or existing engineered. 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. Next to gravity, water is the most important factor in slope stability. Application note slope stability analysis worked example. Download spreadsheet to calculate slope stability calculation. Budget can vary wildely for scantling calculations. Pdf importance of slope stability problem is the reason why so many alternate methods have been developed for evaluating the safety of a slope. This data is used to calculate the metacentric height.
This was applied in the model by selecting all the boundary lines between the mudstone and weathered mudstone unshow the water table, to facilitate. Evaluation of minimum factor of safety in slope stability analysis zuyu chen and changming shao institute of water consetvanc and hydroelectric power research, p. That is the level of effort required to submit a vessel for construction contract bids. Pdf stability analysis of slope in strainsoftening soils. To assess the stability of slopes under shortterm often during construction and longterm conditions. Calculation as shown in later part of this paper will. The discrete element method dem presents an advantage in the calculation of the interaction forces between. Aug 06, 2014 download spreadsheet to calculate slope stability calculation. Stability analysis of slope in strainsoftening soils using local arclength solution scheme article pdf available in journal of mountain science 141. Lna ensures that all of the design and management team are always up to date with the latest requirements. Slope stability united states army corps of engineers. The new computed factor of safety is the total resistance divided by the total driving force wsin. It is a slightly modified javascript clone of the slope stability software stabr ver.
Appendix c slope stability analyses table of contents figures summary of slope stability analyses, sheet 2 soil parameters, sheets 3 to 6 slope stability calculations. They are certainly major factors in cut slope stability and in the stability of fill slopes involving both internal and external slope failures. Navn adresse postnummer by email telefonnummer gyldig fra gyldig til reference name address zip code city email telephone valid from valid until reference. It also highlights some of the differences in approach to that adopted by the limit equilibrium method of slices. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. Lemdem coupling for slope stability analysis springerlink. Calculations with a trial factor of safety equal to 1. Over 10 million scientific documents at your fingertips. Pdf over several decades, the limit equilibrium method has dominated the usage.
Pdf lemdem coupling for slope stability analysis researchgate. Limit analysis and stability charts for 3d slope failures radoslaw l. Download code slope stability calculation spreadsheet simplified bishop method. Risk factors or slope factors and dose coefficients were calculated for exposure to radionuclides in a variety of scenarios. The corresponding output is the data file used for.
Rock slope stability analysis utilization of advanced. Slope stability analysis of the right abutment of a railway bridge proposed at about 350 m above the ground level, crossing a river and connecting two huge hillocks in the himalayas, india is. Slope stability is controlled by relief material strength soil water content vegetation. Pdf stability analysis of a rock slope in himalayas. Pdf slope stability analysis is a keen area of interest to researchers of geotechnical.
Performance of inclining tests and lightweight calculations as well as the development of stability books updated. Threedimensional slope stability problem with a surcharge load. Experience in using the variational method in slope stability. A set of 5 basic slope stability problems, together with 5 variants, was distributed in the australian geomechanics profession and overseas as part of a survey sponsored by acads association for computer aided design, in 1988. This statement may have been made before, but nothing is certain without historical records. Civilax is the knowledge base covering all disciplines in civil engineering. It is computed by summing the moments of all forces acting on an individual slice about the. How do friction and cohesion work together to stabilize slopes. Theory of slope stability portland state university.
Slope stability calculation spreadsheet simplified bishop. International ship stability workshop shipstab highlights. The aleksotas hill slope stability calculations of original natural slope and excavated slope. During failure, the slope material was assumed to rotate as a single rigid mass bounded with logarithmic spiral rupture surface. System sciences and earth natural hazards stability of. The use of the finite elements in calculations of stability has to overcome the weakness of the traditional methods. Step 4 analyze the stability of the slope if a groundwater flow calculation is specified first to establish the phreatic surface, and then the stability of the slope is.
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