Winkler Stiffness Intensity for Flexible Walls Retaining Inhomogeneous Soil

Durante, Maria Giovanna; Brandenberg, Scott J.; Stewart, Jonathan P.; Mylonakis, George

doi:10.1061/9780784481479.049

Cited by 7 publications

(4 citation statements)

References 20 publications

(30 reference statements)

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“…For this reason, as the unboundedness in the horizontal direction can not be accounted formally, a very slender model of length L (L/H = 275/2) was used. This approach mirrors the one advocated recently by Durante and collaborators [27], which delivered satisfactory results in the quasi-static regime, yet it had not been tested in frequency-domain dynamic analysis previously. The details on the analyses carried out in Abaqus follow:…”

Section: Evaluating and Verifying The Solutionmentioning

confidence: 56%

Exact seismic response of smooth rigid retaining walls resting on stiff soil

Garcia‐Suarez

Asimaki

2020

Num Anal Meth Geomechanics

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The assessment of forces exerted on walls by the backfill is a recurrent problem in Geotechnical Engineering, owing to its relevance for both retaining systems and underground structures. In particular, the work by Veletsos and Younan becomes pertinent when considering pressure increments on underground structures triggered by seismic events. These scholars furnished the first satisfactory engineering solution corresponding to a simple configuration, which has become a milestone in the field. This paper presents the exact solution to this reference problem. The solution is given in horizontal wavenumber domain, hence it comes in terms of inverse Fourier transforms, which in turn are verified against finite-element simulations. Specific features of this exact solution that were not captured by prior engineering approximations are highlighted and discussed.

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Section: Evaluating and Verifying The Solutionmentioning

confidence: 56%

Exact seismic response of smooth rigid retaining walls resting on stiff soil

Garcia‐Suarez

Asimaki

2020

Num Anal Meth Geomechanics

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“…Brandenberg et al [88] later extended their linear elastic solution to address the case of rigid walls retaining inhomogeneous backfill soils and resting on a rigid base. Shortly thereafter, Durante et al [89] investigated the behavior of flexible walls retaining both homogeneous and inhomogeneous soil under seismic loading and resting on a rigid base. They employed numerical modeling using the pseudostatic approach.…”

Section: Elastic Methodsmentioning

confidence: 99%

Seismic Behavior of Retaining Walls: A Critical Review of Analytical and Field Performance Studies

Khan,

Karray,

Paultre

2023

Geotechnics

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Given the abundance and importance of earth retention structures, the problem of seismic earth pressure has attracted not only the research community but also industry and government establishments. The dynamic response, even in the case of the simplest retaining wall, presents a complex problem of soil–structure interaction, encompassing a multitude of competing and complementary factors. This article presents a thorough and critical evaluation of notable analytical and field studies related to the dynamic earth pressures acting on retaining walls. Despite numerous studies spanning nearly a century regarding seismically induced lateral earth pressures, there remains a noticeable disparity between theoretical understanding and the actual field performance of retaining structures during seismic events. This review underscores the necessity for a more meticulous examination of dynamic analysis techniques and the existing design methodologies for retaining structures.

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“…The relations in Equations 11 and 12 and Figure 5 are curve-fits to finite element simulation results (updated from Durante et al, 2018). 8.…”

Section: Recommended Proceduresmentioning

confidence: 99%

Simplified solution for seismic earth pressures exerted on flexible walls

et al. 2022

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Seismic earth pressures acting on basement walls and retaining walls are most commonly computed using limit state methods, in which the effects of earthquake shaking are represented by a horizontal body force in an active soil wedge. Limit state methods provide a poor physical representation of the fundamental mechanisms that give rise to seismic earth pressures, which depend on relative wall–soil displacements. Such displacements are a consequence of soil–structure interaction, which, in the absence of a strong inertial component (e.g. from a connected structure), are mainly sensitive to the ratio of wavelength-to-wall height and relative wall-to-soil flexibility. We present a simplified single-frequency procedure for computing seismic earth pressures applied to flexible retaining structures by vertically propagating shear waves. The procedure accounts for the first-order wavelength and wall flexibility effects while simplifying a number of secondary effects in a manner that produces a slightly conservative outcome. Input parameters to the proposed solution are readily attainable for engineering design applications. For typical earth retention systems, earth pressures computed using the proposed procedure are lower than those computed using limit state solutions. Predictions from the proposed solution compare well with results of numerical simulations and centrifuge modeling from literature, whereas limit state procedures either do not provide a physically meaningful solution or produce strongly biased predictions (overprediction of experiments, underprediction of available simulations).

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Winkler Stiffness Intensity for Flexible Walls Retaining Inhomogeneous Soil

Cited by 7 publications

References 20 publications

Exact seismic response of smooth rigid retaining walls resting on stiff soil

Exact seismic response of smooth rigid retaining walls resting on stiff soil

Seismic Behavior of Retaining Walls: A Critical Review of Analytical and Field Performance Studies

Simplified solution for seismic earth pressures exerted on flexible walls

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