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

Sahare, Anurag; Tanaka, Yoshikazu; Ueda, Kyohei

doi:10.1016/j.soildyn.2020.106339

Cited by 9 publications

(1 citation statement)

References 11 publications

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“…The research of Wang et al (2019) and Yang et al (2019) were about the performance and load-bearing characteristics of the single friction wheel foundation of offshore wind turbines under lateral moment loads and the vertical performance in the sand, and only one LVDT was used in their tests. Some researchers (Kutter et al, 2018;Sahare et al, 2020) carried out Liquefaction Experiments and Analysis Projects (LEAP). The centrifugal models were equipped with 14 accelerometers and 10 pore pressure transducers, and 20 data acquisition channels were utilized.…”

Section: Introductionmentioning

confidence: 99%

Research on Application of Multi-Channel Selector in Centrifugal Model Test of Anchoring Slope by Frame Beam

et al. 2021

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An anchoring frame beam is a very common form of support for reinforced slopes, especially in alpine regions. Centrifugal tests have proved to be an intuitive and effective means of investigating the mechanism of action of frame beams. However, the data acquisition system of the geotechnical centrifuge in service has the problem of a small number of acquisition channels. A multi-channel selector based on the existing acquisition system was proposed, designed, processed, and manufactured, and it was debugged, tested, and applied in a no-load centrifugal test, static pressure model test, and centrifugal model test. The results show that the acquisition mode of the multi-channel selector connected with a maximum of 288 sensors has been changed from “one-to-one” to “one-to-many”. Its influence on various sensor signals is negligible. The multi-channel selector can work normally, which communicates and feeds back with the remote controller in the 1–120 g no-load centrifugal test. In the static load model test, 162 sensor signals were well collected through it. And only 51 channels were used to effectively obtain the signals of 187 sensors in a 70 g centrifugal model test of an anchoring slope with a frame beam. The multi-channel selector can be successfully applied in different use environments, saving time and reducing the cost of obtaining a single set of data.

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Section: Introductionmentioning

confidence: 99%

Research on Application of Multi-Channel Selector in Centrifugal Model Test of Anchoring Slope by Frame Beam

et al. 2021

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Investigation of Lateral Displacement Mechanism in Layered and Uniform Soil Models Subjected to Liquefaction-Induced Lateral Spreading

Sahare

Ueda

Uzuoka

2022

Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 202

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LEAP-ASIA-2019 Numerical Simulations Using a Strain Space Multiple Mechanism Model for a Liquefiable Sloping Ground

Tanaka,

Sahare,

Ueda

et al. 2024

Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading II

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This chapter presents the numerical simulations using a strain space multiple mechanism model on a liquefiable sloping ground during earthquake excitation which are compared with the results obtained from the centrifuge tests conducted at different centrifuge facilities as a part of LEAP-ASIA-2019 with an effort to validate the generalized scaling laws. The constitutive model parameters were determined based on the results of cyclic torsional shear tests. One of the key objectives of this chapter is to assess the differences arising in the soil system responses depending on the three different predictors when using the same constitutive model. For this purpose, the soil constitutive model parameters were calibrated differently, and all the predictors were able to capture the important features of saturated sand during undrained cyclic shearing. This was followed by the numerical simulations of the centrifuge data, which showed no predominant differences in the simulated results due to the different soil constitutive model parameters. However, the amount of shear-induced dilatancy experienced by the sand during cyclic shearing was found out to be different among predictors. It is also highlighted that predictors may achieve the ideal measured results either by performing numerical simulations in model scale or in prototype scale.

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

Cited by 9 publications

References 11 publications

Research on Application of Multi-Channel Selector in Centrifugal Model Test of Anchoring Slope by Frame Beam

Research on Application of Multi-Channel Selector in Centrifugal Model Test of Anchoring Slope by Frame Beam

Investigation of Lateral Displacement Mechanism in Layered and Uniform Soil Models Subjected to Liquefaction-Induced Lateral Spreading

LEAP-ASIA-2019 Numerical Simulations Using a Strain Space Multiple Mechanism Model for a Liquefiable Sloping Ground

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