The finite element modeling of rigid inclusion-supported embankment

Alsirawan, Rashad; Koch, Edina

doi:10.1556/606.2021.00504

Cited by 5 publications

(8 citation statements)

References 13 publications

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“…Over the past two decades, increasingly more numerical analysis has been used to investigate this type of SRW (Liu et al [4], Guler et al [5], Ren et al [6]). For more complicated issues in geotechnical engineering, numerical analysis is deemed to be appealing [7,8] as with terraced walls, which are considered a challenge in the design domain of the segmental retaining walls.…”

Section: Introductionmentioning

confidence: 99%

Dynamic behavior of gravity segmental retaining walls

Alsirawan

Alnmr

2023

Pollack

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This work aims to highlight gravity segmental retaining walls with their varied advantages. The paper investigates the dynamic behavior analysis of segmental retaining walls. The stability analysis is conducted on the basis of a pseudo-static Mononobe-Okabe theory that provides safety factors against sliding and overturning failure. The results demonstrate that the crucial safety factor of internal stability is the safety factor against overturning. Moreover, the positive wall inclination angle contributes to an improvement in the stability of the segmental retaining walls and the effect of the vertical seismic coefficient on the stability can be disregarding. Finally, a new equation is proposed for the elementary design of the segmental retaining walls.

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Section: Introductionmentioning

confidence: 99%

Dynamic behavior of gravity segmental retaining walls

Alsirawan

Alnmr

2023

Pollack

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“…The correct validation of the problem is among the most significant issues to address. To validate a model, the predictions of a numerical approach are compared to the results of engineering programs (Abaqus, Plaxis) that use independent solutions or field measurements [20,21]. Due to the lack of field measurements in Syria, showing the change of suction vs. depth can be relied upon for validation.…”

Section: Research Materials and Methodologymentioning

confidence: 99%

Numerical simulation of replacement method to improve unsaturated expansive soil

Alnmr

Ray

2023

Pollack

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In this paper, a parametric study is done with various removal and replacement materials to study the effectiveness of the removal and replacement method on the wetting depth in the expansive soil and the amount of differential heave caused by climate conditions and common irrigation scenarios for the southern region of Syria. Soil suction changes and associated soil deformations are analyzed using finite element codes, VADOSE/W and SIGMA/W. The paper concludes that the optimum thickness for replacement with high permeability soil should be at least 1 m. In addition, it concludes that replacing soil with a permeability coefficient lower than the permeability coefficient of the site soil contributes to a 56% and 79% reduction in total and differential heave, respectively.

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“…The proper validation of the problem is one of the most important issues to be taken into consideration. In order to validate a model, the outputs of a numerical method are assessed through a comparison with the field measurements or the results of software packages that employ independent solutions [23]. The first crucial step in geotechnical numerical modeling is selecting and calibrating a robust and accurate soil material model (i.e., constitutive model).…”

Section: Appropriate Constitutive Modelmentioning

confidence: 99%

Two-Dimensional Numerical Analysis for TBM Tunneling-Induced Structure Settlement: A Proposed Modeling Method and Parametric Study

2023

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The construction of tunnels in densely populated urban areas poses a significant challenge in terms of anticipating the settlement that may result from tunnel excavation. This paper presents a new and more realistic modeling method for tunnel excavation using a Tunnel Boring Machine (TBM). This method is compared with other reference modeling methods using a validated model of a subsurface tunnel excavated by a TBM with a slurry shield. A parametric study is conducted to investigate the impact of key parameters, including structure width, foundation depth, eccentricity, load on the structure, overburden depth, and tunnel diameter, on tunnel–soil–structure interaction and the resulting structure settlements. The results reveal that the tunnel diameter, eccentricity, and overburden depth have a significant impact on structure settlements, with values of 22.5%, 17%, and 7.1%, respectively. Finally, the paper proposes an equation for predicting the maximum settlement of a structure, considering the critical parameters. The validity of the equation is evaluated by comparing its results with the outputs from various case studies, including a newly validated model, two real-life case studies, and centrifuge tests. The results indicate a high level of consistency between the calculated and measured settlements.

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The finite element modeling of rigid inclusion-supported embankment

Cited by 5 publications

References 13 publications

Dynamic behavior of gravity segmental retaining walls

Dynamic behavior of gravity segmental retaining walls

Numerical simulation of replacement method to improve unsaturated expansive soil

Two-Dimensional Numerical Analysis for TBM Tunneling-Induced Structure Settlement: A Proposed Modeling Method and Parametric Study

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