Geometric Effects on Piles in Consolidating Ground: Centrifuge and Numerical Modeling

Lv, Yaru; Ng, Charles Wang Wai; Lam, S. Y.; Liu, H. L.; J., L.

doi:10.1061/(asce)gt.1943-5606.0001714

Cited by 13 publications

(3 citation statements)

References 24 publications

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“…In the mechanical test paths (test A1), the material parameters for the numerical simulation are adopted from Lv et al (2017). From the results, it is obvious that the estimated bearing capacity is in agreement with the experimental results (Figure 4).…”

Section: Discussionsupporting

confidence: 53%

“…The former is calculated based on the Cam-Clay model parameters from Lv et al (2017), for NCL, i.e., 560 kPa with the experimentally measured void ratio of 0.79. As a result, =8 is adopted for the numerical simulation and it is within a reasonable range since preparation of physical model involves pre-compaction process.…”

Section: Axisymmetric Finite Element Modelmentioning

confidence: 99%

“…As a result, =8 is adopted for the numerical simulation and it is within a reasonable range since preparation of physical model involves pre-compaction process. All parameters in simulation are summarized in Table 1 and Table 2, and the constitutive parameters of soil can be referred to Lv et al (2017). Initial temperature for the entire numerical model is assumed 20C as the case of the physical model.…”

Section: Axisymmetric Finite Element Modelmentioning

confidence: 99%

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Long-term thermo-mechanical behaviour of energy piles in clay

Nguyen

Gan

et al. 2020

Environmental Geotechnics

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In engineering practice, energy pile foundations are often designed for the lifetime of the building. Thermal exchange between a pile and the surrounding soil depends on the annual energy needs of the building, as heating mode in winter and cooling mode in summer. Thus, energy pile foundations will undergo a heating-cooling cycle per year. In the present work, an experimental method based on a small-scale pile model installed in saturated clay was used to study the thermo-mechanical behaviour of energy pile under thermal cycles. 30 cycles were applied (to represent a 30-year period if we neglect the daily cycles) while the pile head load was maintained constant. Four tests were performed corresponding to pile head loads equal to 0, 20%, 40% and 60% of pile resistance. The results obtained show the increase of irreversible pile head settlement with the thermal cycles. In order to better interpret the experimental results, the finite element method is used to simulate numerically the experiments. That allows highlighting the important role of pile thermal contraction/expansion in the pile/soil interaction under thermo-mechanical loading.

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Section: Discussionsupporting

confidence: 53%

Section: Axisymmetric Finite Element Modelmentioning

confidence: 99%

Section: Axisymmetric Finite Element Modelmentioning

confidence: 99%

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