LEAP-ASIA-2019: Validation of centrifuge experiments and the generalized scaling law on liquefaction-induced lateral spreading

Tobita, Tetsuo; Ueda, Kyohei; Vargas, Ruben R.; Ichii, Koji; Okamura, Mitsu; Sjafruddin, Asri Nurani; Takemura, Jiro; Hang, Lyu; Uzuoka, Ryosuke; Iai, Susumu; Boksmati, Jad I.; Fusco, Alessandro; Torres-Garcia, S.; Haigh, Stuart; Madabhushi, Spg; Manzari, Majid T.; Escoffier, Sandra; Li, Zheng; Kim, Dong Soo; Manandhar, Satish; Hung, Wen Yi; Huang, Jun-Xue; Pham, Truong-Nhat-Phuong; Zeghal, Mourad; Abdoun, Tarek; Korre, Evangelia; Kutter, Bruce L.; Carey, Trevor J.; Stone, Nicholas; Zhou, Yan‐Guo; Li, Kai; Ma, Qiang

doi:10.1016/j.soildyn.2022.107237

Cited by 15 publications

(4 citation statements)

References 15 publications

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“…A strain space multiple mechanism model originally proposed by Iai et al [6] is used for the numerical simulation of the centrifuge experimental tests conducted by Tobita et al [3,7]. The model has been extended by incorporating a new stress-dilatancy relationship [8] and implemented in a large deformation analysis program based on the finite strain theory [9].…”

Section: Constitutive Modelmentioning

confidence: 99%

“…The numerical simulation results are compared with the centrifuge test results [3,7] to investigate the effect of the radial gravity field on the seismic response of liquefiable sloping ground in a quantitative way. The centrifuge experiments were conducted at the Disaster Prevention Research Institute, Kyoto University (KyU) using a beam-type centrifuge having an effective radius of 2.5 m as a part of LEAP-GWU-2015 project [2] and at the Center for Geotechnical Modeling at University of California, Davis (UCD) using a beam type centrifuge having an effective radius of 1 m as a part of LEAP-ASIA-2019 [7]. Ottawa F-65 sand was used for both the centrifuge tests.…”

Section: Constitutive Modelmentioning

confidence: 99%

“…3, the ground surface is shaped as a curved for both the centrifuge tests to consider the effect of the radial gravity field considering the shaking direction in the plane of spinning of the centrifuge. More detailed information about the centrifuge test method and the test results can be found in [3,7].…”

Section: Constitutive Modelmentioning

confidence: 99%

See 2 more Smart Citations

Numerical study on the effect of rotation radius of geotechnical centrifuge on the dynamic behavior of liquefiable sloping ground

Sahare

Tanaka

Ueda

2020

Soil Dynamics and Earthquake Engineering

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Section: Constitutive Modelmentioning

confidence: 99%

Section: Constitutive Modelmentioning

confidence: 99%

See 1 more Smart Citation

Numerical study on the effect of rotation radius of geotechnical centrifuge on the dynamic behavior of liquefiable sloping ground

Sahare

Tanaka

Ueda

2020

Soil Dynamics and Earthquake Engineering

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“…One study conducted two large-scale shake table experiments to investigate the seismic pile group-bridge soil system failure mechanisms and study the role of soil crust in lateral spreading caused by liquefaction [7]. Lastly, a team of researchers used the results from a large and reliable database of centrifuge models and element tests to perform validation exercises on a numerical model that can simulate the lateral spreading phenomenon [8].…”

Section: Introductionmentioning

confidence: 99%

An Interpretable Machine Learning Approach in Understanding Lateral Spreading Case Histories

Torres

2024

GEOMATE

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Lateral spreading is one of the most common secondary earthquake effects that cause severe damage to structures and lifelines. While there is no widely accepted approach to predicting lateral spread displacements, challenges to the existing empirical and machine learning models include obscurity, overfitting, and reluctance of practical users. This study reveals patterns in the available lateral displacement database, identifying rules that describe the significant relationships among various attributes that led to lateral spreading. Seven conditional attributes (earthquake magnitude, epicentral distance, maximum acceleration, fines content, mean grain size, thickness of liquefiable layer, and free-face ratio) and one decision attribute (horizontal displacement) were considered in modeling a binary class rough set machine learning. There are eighteen rules generated in the form of if-then statements. The decision support system reveals that the severity of lateral spreading clearly comes from the combinations of relevant attributes. Moreover, five clusters of rules were also observed from the generated rules. Useful information regarding the different lateral spreading case scenarios emerges from the results. Statistical validation and interpretation of rules using principles of soil mechanics and related studies were also performed. The output of this study, a decision support system, can be very useful to decision-makers and planners in understanding the lateral spreading phenomena. Recommendations for the model improvement and for further studies were discussed.

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LEAP-ASIA-2019: Summary of Centrifuge Experiments on Liquefaction-Induced Lateral Spreading – Application of the Generalized Scaling Law

Tobita,

Ichii,

Ueda

et al. 2024

Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading II

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In the framework of Liquefaction Experiments and Analysis Projects (LEAP), round-robin centrifuge model tests were conducted in collaboration with ten international institutes on identical saturated sloping sand layers with a wide range of initial conditions. Two tests, one with a model following conventional centrifuge scaling law and the other with a model following the generalized scaling law (GSL), were assigned to each institute for two purposes: (1) validation of the generalized scaling law (GSL) and (2) development of additional experimental data sets to fill the gaps in the existing experimental data sets. The GSL may be validated when the ground deformation is small (less than 250 mm in the present study). The trend surface was updated with the new data sets, whose trend is consistent with the previous one.

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LEAP-ASIA-2019: Validation of centrifuge experiments and the generalized scaling law on liquefaction-induced lateral spreading

Cited by 15 publications

References 15 publications

Numerical study on the effect of rotation radius of geotechnical centrifuge on the dynamic behavior of liquefiable sloping ground

Numerical study on the effect of rotation radius of geotechnical centrifuge on the dynamic behavior of liquefiable sloping ground

An Interpretable Machine Learning Approach in Understanding Lateral Spreading Case Histories

LEAP-ASIA-2019: Summary of Centrifuge Experiments on Liquefaction-Induced Lateral Spreading – Application of the Generalized Scaling Law

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