Cyclic Strength of Ottawa F-65 Sand: Laboratory Testing and Constitutive Model Calibration

Ziotopoulou, Katerina; Montgomery, Jack; Bastidas, Ana Maria Parra; Morales, Brian

doi:10.1061/9780784481486.019

Cited by 15 publications

(4 citation statements)

References 1 publication

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“…These time series were converted to an equivalent 15 uniform loading cycles time series using the fatiguebased procedure by Seed et al (1975) with a value of 0.20. This value was found to reasonably interpret dynamic centrifuge test results through a sensitivity analysis, and falls into the range reported in Parra and in Ziotopoulou et al (2018)…”

Section: Cyclic Strengths From Inverse Analysissupporting

confidence: 79%

Mechanistic Development of CPT-Based Cyclic Strength Correlations for Clean Sand

Moug

Price

Bastidas³

et al. 2019

J. Geotech. Geoenviron. Eng.

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Mechanistic approaches for developing cone penetration test-based liquefaction triggering correlations are presented and evaluated with an application to Ottawa sand. The mechanistic approaches utilize combinations of data from: undrained cyclic direct simple shear tests, dynamic geotechnical centrifuge tests with in-flight cone penetration profiles, and cone penetration simulations. Cyclic direct simple shear tests on Ottawa sand characterize the relationship between cyclic resistance ratio ( ) and relative density ( ). Relationships between cone tip resistance ( ) and are developed from geotechnical centrifuge tests and cone penetration simulations. Penetration simulations using the MIT-S1 constitutive model with three different calibrations for Ottawa sand examine the role of critical state line shape and position on simulated values. The − relationship from laboratory tests is composed with measured and simulated − relationships via common values to develop − relationships. An alternative − relationship is developed from inverse analyses of centrifuge test sensor array data (i.e., arrays of accelerometers and pore pressure sensors). The results of these different approaches are compared to case history-based correlations for clean sand and their relative merits discussed.Recommendations are provided for future application of these mechanistic approaches for developing liquefaction triggering correlations of poorly characterized or unique soils.

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Section: Cyclic Strengths From Inverse Analysissupporting

confidence: 79%

Mechanistic Development of CPT-Based Cyclic Strength Correlations for Clean Sand

Moug

Price

Bastidas³

et al. 2019

J. Geotech. Geoenviron. Eng.

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“…All tests involved Ottawa F-65 sand (US Silica, Ottawa, Illinois) following previous investigations by Ziotopoulou et al (2018), Darby et al (2019), Carey et al (2020), Gomez (2020), El Ghoraiby et al (2020), and others. The sand had a D 10 of 0.13 mm, D 30 of 0.18 mm, D 50 of 0.21 mm, D 60 of 0.23 mm, no fines (Carey et al 2020), and a USCS classification of SP following ASTM D2487-17e1 (ASTM 2017).…”

Section: Sand Materialsmentioning

confidence: 99%

Effect of Light Biocementation on the Liquefaction Triggering and Post-Triggering Behavior of Loose Sands

Lee

Gomez

Kortbawi

et al. 2022

J. Geotech. Geoenviron. Eng.

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Microbially induced calcite precipitation (MICP) is an environmentally conscious ground-improvement method that can enhance the engineering properties of granular soils through the precipitation of calcium carbonate (CaCO 3 ) on soil particle surfaces and contacts. Although numerous studies have shown the ability of biocementation to improve the liquefaction resistance of loose sands, the effects of light cementation levels on undrained cyclic behaviors have remained relatively unexplored. A series of undrained monotonic and cyclic direct simple shear tests were performed to examine the effect of light biocementation (ΔV s < 100 m=s and CaCO 3 contents <0.9%) on the liquefaction triggering and post-triggering behavior of loose Ottawa F-65 sand subjected to varying loading magnitudes [cyclic stress ratio (CSRÞ ¼ 0.1 to 0.3]. Results suggest that the presence of light biocementation can significantly improve the liquefaction triggering resistance of loose sands, with log-linear increases in the number of cycles required to trigger liquefaction, which consistently correlated with cementation-induced V s increases. Despite these remarkable pretriggering improvements, almost no improvements were observed in post-triggering strain accumulation and postcyclic reconsolidation behaviors, with V s measurements indicating that small-strain improvements were largely erased following shearing events.

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“…Numerical predictions are intimately related to the numerical platform used for simulations, the ability of constitutive models to accurately simulate soil behavior, as well as the input parameters, calibration protocols, and various modeling decisions that the analyst must make [7][8][9][10][11][12][13]. The calibration of constitutive models is commonly conducted at the element level to reasonably match results from laboratory tests (e. g., cyclic direct simple shear data).…”

Section: Introductionmentioning

confidence: 99%

Investigation of key parameters and issues in simulating centrifuge model tests of a sheet-pile wall retaining a liquefiable soil deposit

Basu

Pretell

Montgomery

et al. 2022

Soil Dynamics and Earthquake Engineering

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Cyclic Strength of Ottawa F-65 Sand: Laboratory Testing and Constitutive Model Calibration

Cited by 15 publications

References 1 publication

Mechanistic Development of CPT-Based Cyclic Strength Correlations for Clean Sand

Mechanistic Development of CPT-Based Cyclic Strength Correlations for Clean Sand

Effect of Light Biocementation on the Liquefaction Triggering and Post-Triggering Behavior of Loose Sands

Investigation of key parameters and issues in simulating centrifuge model tests of a sheet-pile wall retaining a liquefiable soil deposit

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