Pseudo-dynamic analysis of seismic stability of reinforced slopes considering non-associated flow rule

Shafiee, Amir Hossein

doi:10.1007/s11771-011-0948-3

Cited by 23 publications

(3 citation statements)

References 29 publications

(29 reference statements)

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“…Nowadays, there are many methods to analyze the stability of slopes under earthquakes, including the quasi-static method 24 – 30 , the quasi-dynamic method 31 – 35 , the Newmark displacement method 36 – 40 , and the time history analysis method 41 – 44 . The essence of the quasi-static method is to equivalently convert the inertial force acting on the rock mass into the product of the seismic acceleration and the weight of the sliding body, and solve the safety factor through the limit analysis method or the limit equilibrium method, which only considers the seismic intensity and ignores the influence of the seismic dynamic parameters.…”

Section: Introductionmentioning

confidence: 99%

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Jia,

Gao,

Bao

et al. 2024

Sci Rep

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The seismic deterioration effects of anchor cables and slope structural planes are often neglected in the dynamic stability analysis of anchored rocky slopes to the extent that the stability of slopes is overestimated. In this paper, a dynamic calculation method for anchored rocky slopes considering the seismic deterioration effect is established, and a stability evaluation method for anchored rocky slopes based on the Gaussian mixture model is proposed. The seismic deterioration effect on the stability of anchored rocky slopes is quantitatively analyzed with an engineering example, and the relationship between seismic intensity and the failure probability of slopes is clarified. The results show that compared with the calculation method without considering the seismic deterioration effect, the minimum safety factor and post-earthquake safety factor obtained by the proposed method in this paper are smaller. The number of seismic deteriorations of the slope is used as the number of components of the Gaussian mixture model to construct the failure probability model of the slope, which can accurately predict the failure probability of anchored rocky slopes. The research results significantly improve the accuracy of the stability calculation of anchored rocky slopes, which can be used to guide the seismic design and safety assessment of anchored rocky slopes.

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Section: Introductionmentioning

confidence: 99%

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Jia,

Gao,

Bao

et al. 2024

Sci Rep

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“…Using the pseudo-static approach (Ling et al 2015) is a simple method that provides an assessment for seismic slope stability analyses that is quick but may not be as dependable. In order to reconcile the complex earthquake time history with the unduly simplistic pseudo-static approach, Steedman and Zeng (1990) developed and implemented the pseudo-dynamic approach for seismic slope stability analysis (Eskandarinejad and Shafiee 2011, Qin and Chian 2018, Zhou and Qin 2020. Song et al (2023) examined a localized, precise reinforcement technique for enhancing the dynamic stability of rock slopes during earthquakes through the application of the Continuum-Discontinuum Element Method.…”

Section: Introductionmentioning

confidence: 99%

Static and seismic stability investigation of a bamboo grid reinforced slope with different stepped reinforcing arrangements

Samal,

Sahoo,

Badavath

2024

Eng. Res. Express

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Bamboo is primarily used as a soil reinforcement material to build roadways and stabilize slopes and river banks. The current study aims to examine how bamboo grid reinforcing slopes behave in the form of various stepped reinforcing arrangements. The static and seismic characteristics of a slope reinforced with a bamboo grid were examined through 3D numerical analyses employing the finite element program MIDAS GTS NX (340) 2023 v1.1. In this study, the Strength Reduction Method (SRM), a crucial technique in finite element analysis, is utilized to compute the factor of safety and displacement in static stability analysis. Seismic stability analysis is conducted using non-linear time history analysis, examining the changes in critical slope parameters in response to seismic excitation.Three distinct arrangements of bamboo grids were employed to enhance slope stability. Static stability analysis, considering the factor of safety and deformation, was conducted for various bamboo grid-reinforced slope arrangements. Additionally, a comprehensive seismic analysis was performed specifically for the type 2 bamboo grid reinforcement arrangement, using the seismic record from the 1971 San Fernando Down earthquake. The safety factor increases by 52.10%, 68.67%, and 62.65% for type 1, 2, and 3 arrangements, respectively, compared to the unreinforced slope. Consequently, the type 2 bamboo grid-reinforced slope arrangement exhibits superior stability in terms of the safety factor. The lateral displacement of the type 2 arrangement is minimal compared to other types. Furthermore, a bamboo grid-reinforced slope with a vertical spacing of 1.5 m demonstrates less deformation than slopes with different vertical spacings. The seismic stability of the slope body surpasses other sections of the bamboo grid-reinforced slope.

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“…Many researchers like Terzaghi [1], Newmark [2], Seed [3], Sarma [4], Kramer and Smith [5], Ling et al [6], Rathje and Bray [7], Choudhury et al [8], Choudhury and Modi [9] used pseudo-static model, Eskandarinejad and Shafiee [10] Chanda [11] used pseudo-dynamic model and Pain et al [12] and Chanda et al [13] proposed modified pseudo-dynamic model for slope stability analysis. The results are computed in using conventional optimization methods.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Geotechnical Parameters Used in Slope Stability Analysis by Metaheuristic Algorithms

Lohar

Sharma

Saha

et al. 2020

Lecture Notes in Networks and Systems

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Quick development of computer execution empowers new improvements in the field of geotechnical engineering and related zones. Considering design variables, constraints, and objectives in any complex problem, conventional optimization techniques are usually inadequate to find the best solution. So, to overcome these problems, many metaheuristic optimization methods are applied successfully. In this paper, study has been performed to use different methods (DE, BOA, SCA, and PSO) to find the solution of civil engineering problem, i.e., slope stability analysis. Slope stability can be defined as resistance of an inclined soil to withstand or undergo the movement. It is crucial because failure of slope may lead to loss of life, economy, and property. Stability of slopes involves such complexity in case of their different geotechnical parameters. In this paper, different metaheuristic algorithms have been used for optimization of factor of safety and other related parameters of slope stability analysis.

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Pseudo-dynamic analysis of seismic stability of reinforced slopes considering non-associated flow rule

Cited by 23 publications

References 29 publications

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Static and seismic stability investigation of a bamboo grid reinforced slope with different stepped reinforcing arrangements

Optimization of Geotechnical Parameters Used in Slope Stability Analysis by Metaheuristic Algorithms

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