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- W2467335551 abstract "Offshore pile foundations are always subjected to cyclic lateral loads, which can result in the remolding and softening of the surrounding seabed soil. Cyclic T-bar penetrometer testing provides a rapid and effective method for assessing the remolded shear strength. It is widely believed that the soil strength degrades with the accumulation of plastic strain, but the strain cannot be measured. Numerical analysis described in this paper shows that the accumulated plastic displacement of the T-bar in a cyclic range of two diameters is approximately equal to its accumulated displacement. By using T-bar test data, a cyclic degradation model based on the accumulated (plastic) displacement is developed to describe the soil strength degradation at a given depth. Furthermore, an improved p–y curve model based on the cyclic degradation model is proposed to estimate the lateral response of pile under cyclic loads. The improved p–y curve model was embedded into the OpenSees program to investigate the cyclic lateral responses of soil elements and the pile. A case study was conducted to verify the improved p–y curve model by comparing it with published centrifuge experiment data. Results indicate that the improved p–y curve model based on T-bar test data is highly precise and practicable." @default.
- W2467335551 created "2016-07-22" @default.
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- W2467335551 date "2016-10-01" @default.
- W2467335551 modified "2023-09-26" @default.
- W2467335551 title "Development of cyclic<i>p–y</i>curves for laterally loaded pile based on T-bar penetration tests in clay" @default.
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- W2467335551 doi "https://doi.org/10.1139/cgj-2015-0358" @default.
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