LEAP-GWU-2015 centrifuge test at UC Davis

Carey, Trevor J.; Hashimoto, Takuma; Cimini, Daniel; Kutter, Bruce L.

doi:10.1016/j.soildyn.2017.01.030

Cited by 17 publications

(5 citation statements)

References 3 publications

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“…Figure 13.1 details the test geometry, sensor locations, and PVC blocks in model scale. Note that Carey et al (2017) used a different model container and spacer configuration for LEAP-GWU-2015.…”

Section: Description Of the Model And Instrumentationmentioning

confidence: 99%

“…A 5-degree slope from the normal of the radial g-field would have a varying radius along the slope of the model surface, which is described theoretically by a log-spiral. Carey et al 2017 showed that rotating a circular arc by 5 degrees is a reasonable approximation for the log-spiral surface. Figure 13.2 shows the wooden template fabricated to approximate the log-spiral surface of the model.…”

Section: Description Of the Model And Instrumentationmentioning

confidence: 99%

“…Once the model was saturated, the degree of saturation was then checked using the method described in the specification, modified from Okamura and Inoue (2012) and Carey et al (2017). The chamber was opened, and a tethered float delineated with a 1 cm grid was placed on the surface of the methylcellulose.…”

Section: Model Saturationmentioning

confidence: 99%

“…A small, 10 kPa vacuum was applied and the location of the laser dots was recorded. Using Boyle's law (Carey et al 2017) the degree of saturation for all three UCD experiments was calculated to be 99.99%. The tiny 0.01% bubble volume would easily dissolve in the water with time or with the increased pressure in the centrifuge.…”

Section: Model Saturationmentioning

confidence: 99%

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LEAP-UCD-2017 Centrifuge Test at University of California, Davis

Carey

Stone

Hajialilue-Bonab

et al. 2019

Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading

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Three centrifuge experiments were performed at the University of California, Davis, for LEAP-UCD-2017. LEAP is a collaborative effort to assess repeatability of centrifuge test results and to provide data for the validation of numerical models used to predict the effects of liquefaction. The model configuration used the same geometry as the LEAP-GWU-2015 exercise: a submerged slope of Ottawa F-65 sand inclined at 5 degrees in a rigid container. This paper focuses on presenting results from the two destructive ground motions from each of the three centrifuge models. The effect of each destructive ground motion is evaluated by accelerometer recordings, pore pressure response, and lateral deformation of the soil surface. New techniques were implemented for measuring liquefaction-induced lateral deformations using five GoPro cameras and GEO-PIV software. The methods for measuring the achieved density of the as-built model are also discussed.

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Section: Description Of the Model And Instrumentationmentioning

confidence: 99%

Section: Description Of the Model And Instrumentationmentioning

confidence: 99%

Section: Model Saturationmentioning

confidence: 99%

Section: Model Saturationmentioning

confidence: 99%

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LEAP-UCD-2017 Centrifuge Test at University of California, Davis

Carey

Stone

Hajialilue-Bonab

et al. 2019

Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading

Self Cite

View full text Add to dashboard Cite

show abstract

“…LEAP is an international collaboration aiming to establish rigorous protocols for validation of soil liquefaction numerical models for practical applications (Kutter et al 2015;Manzari et al 2015). LEAP has several exercises focusing on different aspects of liquefaction (Carey et al 2017). In LEAP-Kyoto-2013 and LEAP-Kyoto-2014, some inconsistencies at different centrifuge facilities were noted due to laminar containers, which also caused challenges for numerical simulations (Tobita et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Specifications and Results of Centrifuge Model Test at Zhejiang University for LEAP-UCD-2017

Zhou

et al. 2019

Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading

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Three dynamic centrifuge tests with different densities (corresponding to loose, medium dense, and dense deposits) were conducted at Zhejiang University for LEAP-UCD-2017 for an exercise of repeatability and reproducibility. The same model used in LEAP-GWU-2015 representing a 5-degree slope consisting of saturated Ottawa F-65 was repeated in 2017, but more rigorous protocols and new techniques (CPT and high-speed cameras) were included in Zhejiang University experiments. Test facilities and detailed modeling and testing procedures are presented; uncertainties in input parameters are also discussed. Preliminary results associated with selected experiment are presented.

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Centrifuge Model Tests at Zhejiang University for LEAP-ASIA-2019

Ma,

Zhou,

Liu

et al. 2024

Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading II

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Two centrifuge models with the same target relative density (Dr = 65%) were conducted in different centrifugal acceleration (30 g for Model-A and 15 g for Model-B) at Zhejiang University (ZJU) to validate generalized scaling law in the program of LEAP-ASIA-2019. The same model used in LEAP-UCD-2017 was repeated, representing a 5-degree slope consisting of saturated Ottawa F-65 sand. This chapter describes test facilities, instrumentations layout, and test procedures. Uncertainty analysis is also carried out in input parameters (e.g., achieved peak ground acceleration, achieved density and the degree of saturation). The test results of acceleration, excess pore water pressures, and displacement etc. were compared at prototype scale to check the validity of the generalized scaling law (GSL). The preliminary experiment results of Zhejiang University show that the Type II generalized scaling law is applicable to the acceleration response while has a weak applicability to the displacement response.

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LEAP-GWU-2015 centrifuge test at UC Davis

Cited by 17 publications

References 3 publications

LEAP-UCD-2017 Centrifuge Test at University of California, Davis

LEAP-UCD-2017 Centrifuge Test at University of California, Davis

Specifications and Results of Centrifuge Model Test at Zhejiang University for LEAP-UCD-2017

Centrifuge Model Tests at Zhejiang University for LEAP-ASIA-2019

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