Laboratory permeability tests on sand: influence of the compaction method on anisotropy. Reply

Chapuis, Robert P.; Gill, D.E.; Baass, K G

doi:10.1139/t91-022

Cited by 4 publications

(4 citation statements)

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“…A common value of 3 for r k ratio is suggested by Verbrugge and Schroeder [52]. For compacted soils, the r k ratio for non-cohesive soils varies from 1 to 40, and for cohesive soils from 0.4 to 4.1 [53]. From laboratory tests, the r k ratio varies from 1 to 4.1 [53].…”

Section: Dam Condition Of Analysismentioning

confidence: 99%

“…For compacted soils, the r k ratio for non-cohesive soils varies from 1 to 40, and for cohesive soils from 0.4 to 4.1 [53]. From laboratory tests, the r k ratio varies from 1 to 4.1 [53]. Leroueil et al [54] found r k ratios from 1 to 1.4 in compacted soils in laboratory, and Smith and Konrad [55] found an r k ratio of 5 using geostatistical analysis of construction control data from the core of an earth dam.…”

Section: Dam Condition Of Analysismentioning

confidence: 99%

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Reliability analysis of an earth dam in operating conditions using direct coupling

Siacara

Napa-García²,

Beck

et al. 2022

SN Appl. Sci.

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In this study, we present a numerical investigation of the direct coupling between the deterministic GeoStudio package (Seepage/W and Slope/W software) and the StRAnD reliability package for normal operating conditions of an existing old earth dam over time. Direct coupling avoids errors associated to point estimate methods and to using response surface surrogates. One relevant feature of the study is the use of realistic pore water pressures for each equilibrium analysis, accomplished by considering a long-term steady-state analysis as an initial condition, followed by four years of equilibrium analysis, before each transient seepage analysis. All reliability analysis were performed using the first-order reliability method. The most important random parameters found in sensitivity analyses are four dam body parameters (saturated hydraulic conductivity, ks; specific weight, γ; effective cohesion, c′; and friction angle, ϕ′) and two filter parameters (ks and ϕ′). A range of values of the relationship between the reliability index (β) and the factor of safety (FS) was found for all probabilistic and deterministic results. Finally, a large difference in terms of critical deterministic and probabilistic slip surfaces is identified for the same time of analysis. Article highlights Realistic pore water pressures used in dam equilibrium analysis, by considering random seepage analysis in previous 5 to 30 days. Direct coupling of deterministic and reliability softwares avoids errors associated to point estimate and response surface surrogate methods. Existing old earth dam studied in Normal Operating Condition. For same analysis time, large differences are observed between critical deterministic and probabilistic slip surfaces.

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Section: Dam Condition Of Analysismentioning

confidence: 99%

Section: Dam Condition Of Analysismentioning

confidence: 99%

Reliability analysis of an earth dam in operating conditions using direct coupling

Siacara

Napa-García²,

Beck

et al. 2022

SN Appl. Sci.

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show abstract

“…A common value of 3 for rk ratio is suggested (Verbrugge and Schroeder, 2018). For compacted soils, the rk ratio for non-cohesive soils varies from 1 to 40, and for cohesive soils from 0.4 to 4.1 (Chapuis et al, 1991). From laboratory tests, the rk ratio varies from 1 to 4.1 (Chapuis et al, 1991).…”

Section: B) Dam Condition Of Analysismentioning

confidence: 99%

“…For compacted soils, the rk ratio for non-cohesive soils varies from 1 to 40, and for cohesive soils from 0.4 to 4.1 (Chapuis et al, 1991). From laboratory tests, the rk ratio varies from 1 to 4.1 (Chapuis et al, 1991). Leroueil et al (Leroueil et al, 2002) found rk ratios from 1 to 1.4 in compacted soils in laboratory, and Smith and Konrad (Smith and Konrad, 2011) found an rk ratio of 5 using geostatistical analysis of construction control data from the core of an earth dam.…”

Section: B) Dam Condition Of Analysismentioning

confidence: 99%

Reliability-based design of an earth and concrete dam.

Siacara¹

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Experimental study about the influence of cyclic load on the hydraulic conductivity of clay

et al. 2020

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Laboratory permeability tests on sand: influence of the compaction method on anisotropy. Reply

Cited by 4 publications

References 0 publications

Reliability analysis of an earth dam in operating conditions using direct coupling

Reliability analysis of an earth dam in operating conditions using direct coupling

Reliability-based design of an earth and concrete dam.

Experimental study about the influence of cyclic load on the hydraulic conductivity of clay

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