A Search for the Critical Slip Surface in Three-Dimensional Slope Stability Analysis

Yamagami, Takuo; Jiang, Jing-Cai

doi:10.3208/sandf.37.3_1

Cited by 66 publications

(36 citation statements)

References 15 publications

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“…Hovland 1977). Respective accurate calculation methods of the safety factor were developed for symmetric and non symmetric conditions of stability (Leshchinsky and Huang 1992;Yamagami and Jiang 1997;Huang and Tsai 2000;Michalowski 2010).…”

Section: Introductionmentioning

confidence: 99%

Factors Affecting the Behaviour of Retaining Structures with Prestressed Anchorages Under 2D and 3D Conditions

Papadopoulou

Sofianos

2016

Geotech Geol Eng

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Some basic factors which influence the behaviour of the anchored retaining structures are investigated and 2D analyses with three dimensional ones are compared. The parametric analysis under 2D conditions focuses on the influence of significant factors such as the normalized embedded depth of the wall, the resistance of the anchors, the free tendon length, the earth pressure coefficient at rest and the flexibility of the system, on the behaviour of the retaining structure. The analyses are performed in two groups for two representative soil types named S 1 (weathered weak rock) and S 2 (very stiff clay). Qualitative as well as quantitative conclusions are derived from the analyses concerning the influence of the above mentioned factors, mainly on the safety factor as well as on the displacements. The 3D analyses are carried out for various ratios L/H, where L is the length and H the height of the slope. Several trends are confirmed from the results concerning the influence of the above-mentioned factors. It is concluded that the triaxal conditions strongly affect the safety factor, as well as the distribution of horizontal and vertical displacements, mainly in the cases where the ratios L/H B 2. Some serious deviations between 2D and 3D analyses are pointed out and the physical explanation of these differences is given for several cases.

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Section: Introductionmentioning

confidence: 99%

Factors Affecting the Behaviour of Retaining Structures with Prestressed Anchorages Under 2D and 3D Conditions

Papadopoulou

Sofianos

2016

Geotech Geol Eng

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“…Arai and Tagyo (1985) utilized conjugate-gradient method for this problem, while Baker (1980) and Yamagami and Jiang (1997) adopted the dynamic programming to determine the critical slip surface. Greco (1996) and Malkawi et al (2001) adopted Monte Carlo technique for searching the critical slip surface.…”

Section: Introductionmentioning

confidence: 99%

An improved particle swarm optimization algorithm with harmony strategy for the location of critical slip surface of slopes

Chu

2011

China Ocean Eng

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The determination of optimal values for three parameters required in the original particle swarm optimization algorithm is very difficult. It is proposed that two new parameters simulating the harmony search strategy can be adopted instead of the three parameters which are required in the original particle swarm optimization algorithm to update the positions of all the particles. The improved particle swarm optimization is used in the location of the critical slip surface of soil slope, and it is found that the improved particle swarm optimization algorithm is insensitive to the two parameters while the original particle swarm optimization algorithm can be sensitive to its three parameters.

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“…Thus, searching for the minimum factor of safety is a non-linear optimization problem with the presence of multiple minima [3]. It is easy to trap in local minima by traditional optimization method, such as simplex method [3−4], Davidson-Fletcher-Powell method [3], conjugate gradient method [5] and dynamic programming [6]. Random method [7] and Monte-Carlo technique [8−9] cannot guarantee the precision of global minimum.…”

Section: Introductionmentioning

confidence: 99%

Modified electromagnetism-like algorithm and its application to slope stability analysis

Zhang

Cao

2011

J. Cent. South Univ. Technol.

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In the view of the disadvantages of complex method (CM) and electromagnetism-like algorithm (EM), complex electromagnetism-like hybrid algorithm (CEM) was proposed by embedding complex method into electromagnetism-like algorithm as local optimization algorithm. CEM was adopted to search the minimum safety factor in slope stability analysis and the results show that CEM holds advantages over EM and CM. It combines the merits of two and is more stable and efficient. For further improvement, two CEM hybrid algorithms based on predatory search (PS) strategies were proposed, both of which consist of modified algorithms and the search area of which is dynamically adjusted by changing restriction. The CEM-PS1 adopts theoretical framework of original predatory search strategy. The CEM-PS2 employs the idea of area-restricted search learned from predatory search strategy, but the algorithm structure is simpler. Both the CEM-PS1 and CEM-PS2 have been demonstrated more effective and efficient than the others. As for complex method which locates in hybrid algorithm, the optimization can be achieved at a convergence precision of 1×10 −3 , which is recommended to use.

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A Search for the Critical Slip Surface in Three-Dimensional Slope Stability Analysis

Cited by 66 publications

References 15 publications

Factors Affecting the Behaviour of Retaining Structures with Prestressed Anchorages Under 2D and 3D Conditions

Factors Affecting the Behaviour of Retaining Structures with Prestressed Anchorages Under 2D and 3D Conditions

An improved particle swarm optimization algorithm with harmony strategy for the location of critical slip surface of slopes

Modified electromagnetism-like algorithm and its application to slope stability analysis

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