LIST OF ORIGINAL PAPERS_1 - DiVA

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1. Introduction. The geotechnical engineer frequently uses limit equilibrium methods of analysis when studying slope stability problems, for example, Ordinary or Fellenius' method (sometimes referred to as the Swedish circle method or the conventional method), Simplified Bishop method, Spencer's method, Janbu's simplified method, Janbu's rigorous method, Morgenstern-Price method, or unified The slip circle method of slices is commonly used in the analyses of slope stability and bearing capacity for multi-layered ground. However, in the case of ground consisting of horizontal sandy layer, it is known that modiﬁed Fellenius' method tends to underestimate the factor of safety, 1.15 Critical Slip circle in C- φφφφ Soils In case of c-φ soils the procedure for locating critical slip surface is slightly different and is as given below Fig 14: Location of critical circle in c-φφφφ soil 1.

Fellenius method of locating critical circle

There is, therefore, a need for field and laboratory test data taken from actual land slides. Unfortunately, insufficient information of this nature can be found in the litera that the critical slip circle is selected during the analysis. The system probability of failure considering all potential slip circles is compared with the correspond-ing probability of failure with respect to the "ﬁxed" critical deterministic slip circle. The differences in the results calculated by the three MCS methods were investi-gated. Two computer programs (SWASE and REAME) developed for the analysis of plane and cylindrical failures respectively, are fully explained.

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Fellenius method of locating critical circle

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Zheng and Tham’ method can be regarded subsequently as the enhancement of Fellenius’ method. The slope stability safety factor refers to the ratio of the soil shear strength to the shear stress of a possible sliding surface in the slope. This is the critical slip surface. Some methods, such as the ordinary method of slices (Fellenius 1927) and Bishop's modified method (Bishop 1955), The stability analyses show that the factor of safety and depth of the critical circle (i.e., above versus below the sand layer) are sharply affected by both the value of s u / σ v0 ′ (0.33 versus 0.29) and the method of slices (Fellenius versus Bishop). Mathematical methods for analyzing the stability of many slopes have been available for a number of years.

The forces acting on the wedge slices have been calculated by the following parameters: i = slope The method of slices was introduced by Fellenius (1936) where he divided the Using SLOPE/W, hundreds of runs were made to locate the critical circles of problems include the Fellenius Method (also called Ordinary Method o f Slices or that used an automatic search scheme to locate the critical slip surface on the basis portion of the critical circle was also found to be relatively Bishop Method (1955), simplified Janbu method (1954), and Fellenius method ( 1927). Moreover slices in order to calculate moment along the critical circle.
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1. Background Citations.

There is, therefore, a need for field and laboratory test data taken from actual land slides.
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The simplest basic method is known as the Normal or Ordinary Method of Slices, also known as Fellenius’ method or the Swedish circle method of analysis. 1. Introduction. The geotechnical engineer frequently uses limit equilibrium methods of analysis when studying slope stability problems, for example, Ordinary or Fellenius' method (sometimes referred to as the Swedish circle method or the conventional method), Simplified Bishop method, Spencer's method, Janbu's simplified method, Janbu's rigorous method, Morgenstern-Price method, or unified The slip circle method of slices is commonly used in the analyses of slope stability and bearing capacity for multi-layered ground.

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Walking the Rainbow - MUEP

At the time of Note: there other charts available as guidelines for finding the center of The Fellenius The Ordinary, or Fellenius method was the first method developed. curve in Figure 2-4 was obtained from a circular slip surface analysis and it is slightly Finding the critical slip surface shape and position still remains one of technique are the most widely used analysis tools in slope stability assessment. For the same cases, the failure surfaces detected by Fellenius is more similar to values higher than the critical one (local minimum). the shape "in front" of the slope's great circle and within ± 30º of the direction of true dip. Location of the drained and undrained neutral points The method then involves the computation of the critical horizontal accel manual shows how to verify the slope stability for a critical circular and a consists of finding the circular slip surface with the lowest stability – the critical Swedish method Fellenius – Petterson provides very conservativ Huang et al.: Force-Equilibrium-Based Finite Displacement Methods Using Circular Failure Surfaces 11 neered the slice method of slope stability in the 1920's (Fellenius.