Geotechnical Stability Analysis by Strength Reduction

Dawson, Ethan; Motamed, Farid; Nesarajah, S.; Roth, W. H.

doi:10.1061/40512(289)8

Cited by 23 publications

(9 citation statements)

References 9 publications

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“…This technique has been used by various authors including Matsui and San (1992) and Dawson et al (1999Dawson et al ( , 2000, and is now available in many commercial finite element (FEM) and finite difference (FDM) programs. This procedure essentially involves repeated analyses by progressively reducing the shear strength properties until collapse occurs.…”

Section: Shear Strength Reduction Techniquementioning

confidence: 99%

Regression models for estimating ultimate and serviceability limit states of underground rock caverns

Zhang

Goh

2015

Engineering Geology

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Section: Shear Strength Reduction Techniquementioning

confidence: 99%

Regression models for estimating ultimate and serviceability limit states of underground rock caverns

Zhang

Goh

2015

Engineering Geology

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“…In this study, the global stability FS gt values are assessed using the shear strength reduction technique (SSR). This technique has been used by various authors including Matsui and San (1992), Dawson et al (1999Dawson et al ( , 2000, and is now available in many commercial finite element (FEM) and finite difference (FDM) programs. This procedure essentially involves repeated analyses by progressively reducing the shear strength properties until collapse occurs.…”

Section: Shear Strength Reduction Techniquementioning

confidence: 99%

Predictive models of ultimate and serviceability performances for underground twin caverns

Zhang¹,

Goh²

2016

Geomech. Eng.

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The construction of a new cavern modifies the state of stresses and displacements in a zone around the existing cavern. For multiple caverns, the size of this influence zone depends on the ground type, the in situ stress, the cavern span and shape, the width of the pillar separating the caverns, and the excavation sequence. Performances of underground twin caverns can be unsatisfactory as a result of either instability (collapse) or excessive displacements. These two distinct failures should be prevented in design. This study simulated the ultimate and serviceability performances of underground twin rock caverns of various sizes and shapes. The global factor of safety is used as the criterion for determining the ultimate limit state and the calculated maximum displacement around the cavern opening is adopted as the serviceability limit state criterion. Based on the results of a series of numerical simulations, simple regression models were developed for estimating the global factor of safety and the maximum displacement, respectively. It was proposed that a proper pillar width can be determined based on the threshold influence factor value. In addition, design charts with regard to the selection of the pillar width for underground twin rock caverns under similar ground conditions were also developed.

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“…Zienkiewicz et al [5] used strength reduction method to analyze slope stability. Subsequently, many researchers conducted research and applied it [6][7][8][9][10] . This technology has been adopted by many famous geotechnical finite element programs.…”

Section: Introductionmentioning

confidence: 99%

Study on Safety Coefficient and Failure Face Ratio of Slope with Soft Layer

Gao¹,

Zhao²,

Sun³

et al. 2020

E3S Web Conf.

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In this paper, the slope with horizontal weak interlayer is taken as the research object, and the safety factor and the location of the failure surface of the slope are calculated by finite element strength reduction method and limit equilibrium method respectively. The results show that when the slope is mixed with soft layer, the positions of the critical failure surfaces calculated by the two methods are quite different, but their safety factors are relatively small. Which method is more accurate needs to be analyzed in combination with the specific conditions of the slope. Through comparative analysis, the calculation efficiency of limit equilibrium method is much higher than that of strength reduction method. The results of this paper provide reliable reference for engineering analysis.

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Geotechnical Stability Analysis by Strength Reduction

Cited by 23 publications

References 9 publications

Regression models for estimating ultimate and serviceability limit states of underground rock caverns

Regression models for estimating ultimate and serviceability limit states of underground rock caverns

Predictive models of ultimate and serviceability performances for underground twin caverns

Study on Safety Coefficient and Failure Face Ratio of Slope with Soft Layer

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