Base sliding and dynamic response of landfills

Zania, Varvara; Psarropoulos, Prodromos N.; Tsompanakis, Yiannis

doi:10.1016/j.advengsoft.2009.06.012

Cited by 14 publications

(3 citation statements)

References 21 publications

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“…However, variations of the mobilised friction angle may occur during the motion, which can influence the accuracy of the analysis (Matasovic et al, 1998;Zania et al, 2010b). Moreover, as found by different studies (Carrubba et al, 2001;De and Zimmie, 1998;Kotake et al, 2011;Zania et al, 2010a), the dynamic interface shear strength is difficult to evaluate because, in addition to the aforementioned parameters involved in static conditions, it is affected by various testing parameters typical of dynamic loading, such as motion amplitude, frequency content and duration.…”

Section: Theoretical Backgroundmentioning

confidence: 91%

Dry friction behaviour of a geosynthetic interface using inclined plane and shaking table tests

Carbone

Gourc

Carrubba

et al. 2015

Geotextiles and Geomembranes

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Section: Theoretical Backgroundmentioning

confidence: 91%

Dry friction behaviour of a geosynthetic interface using inclined plane and shaking table tests

Carbone

Gourc

Carrubba

et al. 2015

Geotextiles and Geomembranes

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“…Most of available Newmarkian models, e.g., decoupled models [Makdisi and Seed, 1978;Bray and Rathje, 1998;Rathje and Bray, 1999;Baziar and Jafarian, 2006;Zania et al, 2008] and coupled stick-slip models [Lin and Whitman, 1983;Bray, 1999, 2000;Zania et al, 2010] estimate displacements by hypothesizing a constant inclination for failure surface. Accordingly, they neglect the decrease in the inclination of the Downloaded by [Chulalongkorn University] at 08:51 27 December 2014 sliding soil mass during its downward-stabilizing motion, which is observable in reality [Stamatopoulos, 1996;Chlimintzas, 2003;Stamatopoulos et al, 2011].…”

Section: Literature Reviewmentioning

confidence: 99%

Decoupled Solution for Seismic Permanent Displacement of Earth Slopes Using Deformation-Dependent Yield Acceleration

Baziar

Rezaeipour

Jafarian

2012

Journal of Earthquake Engineering

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The Newmarkian sliding block analogy has been broadly used to evaluate earthquake-induced displacements of natural and man-made earth slopes. However, several modifications have been proposed by researchers to improve the analytical basis of this analogy. In this article, an analytical procedure is proposed to study interactive effect of downward-stabilizing-movement and seismic response of sliding mass through a decoupled procedure. A generalized single degree of freedom (SDOF) system with distributed mass and stiffness is employed to obtain system response, while the sliding mass is considered as a perfect flexible chain moving along the planes with gradually gentler inclinations. The results show that effect of the proposed modification is significant for period ratios (i.e., fundamental period of system to mean period of input motion) close to one, mainly in the case of small slippage lengths. Analyses using harmonic input motion indicate that time interval between initiation and stoppage of sliding phase is lower for smaller sliding length. Accordingly, lower displacements are obtained for smaller sliding lengths. The analyses representing the effect of acceleration coefficient ratio (i.e., the ratio of yield acceleration to maximum horizontal equivalent acceleration, ACR) show that at lower values of ACR, higher contributions of downward-movement are involved in computed displacements. Whereas, as the value of ACR gets larger, this effect is minimized, i.e., the proposed method tends to imitate the conventional decoupled procedure wherein the permanent displacements tend toward zero. Further studies revealed that as period ratio increases (no larger than one) the order of period ratio contribution increases as well, resulting in smaller permanent displacements, while the effect of downward-movement decreases as period ratio becomes larger than one.

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“…In recent years, some advanced numerical approaches, such as the finite element method (FEM) and finite difference method (FDM), have been employed to investigate the response and stability of landfills during seismic activities. Using the finite element method, equivalent linear analysis has been applied in many studies to investigate the seismic response of landfills [23][24][25][26]. Yet, the equivalent linear model was considered unsuitable for cases where the acceleration exceeds 0.4 g [27].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Stability Finite Difference Time Domain Analysis of Landfill Based on Hypergravity Test

Sun,

Li,

Lin

2024

Applied Sciences

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Earthquakes impact the stability of municipal solid waste (MSW) landfills, especially those with high water levels, and may further lead to disastrous landslides. Numerical analysis offers an efficient and cost-effective way to study the seismic stability of a landfill. In this study, the finite difference nonlinear analysis method was employed to meticulously evaluate the dynamic response of landfills under varying water levels and seismic intensities. The analysis was guided by the seismic instability and centrifuge test outcomes. The rationality of the computational model was verified by examining the responses of acceleration and pore pressure. Subsequently, the time history curve of the dynamic safety factor was derived from the dynamic response of landfills. The results indicated that a landfill was more susceptible to large earthquake effects, and its stability decreased as the water level rose, with the safety factor decreasing to a critical point under the coupling effect of strong earthquakes and high water levels. In contrast, the stability of the landfill with low water levels was good under weak earthquake conditions, with only a slight decrease in the safety factor observed. The seismic stability of a landfill was significantly influenced by both accumulative deformation and negative excess pore pressure. A certain degree of hysteresis in the landfill’s instability was also observed compared to the earthquake loading process. The time history curve of the safety factor can offer a comprehensive insight into seismic stability under diverse conditions. Additionally, future research efforts are needed to better determine the values of strength parameters of MSW in seismic analysis.

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Base sliding and dynamic response of landfills

Cited by 14 publications

References 21 publications

Dry friction behaviour of a geosynthetic interface using inclined plane and shaking table tests

Dry friction behaviour of a geosynthetic interface using inclined plane and shaking table tests

Decoupled Solution for Seismic Permanent Displacement of Earth Slopes Using Deformation-Dependent Yield Acceleration

Dynamic Stability Finite Difference Time Domain Analysis of Landfill Based on Hypergravity Test

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