Characterization of the viscoelastic effects of thawed frozen soil on pile by measurement of free response

Xiao, Feng; Chen, Gang S.; Hulsey, J. Leroy; Davis, Duane A.; Yang, Zhaohui

doi:10.1016/j.coldregions.2017.09.011

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…Zhu et al (2010) studied the changes in residual strain of frozen soil of the Qinghai Tibet Railway under the influence of temperature, water content, and confining pressure based on low-temperature dynamic triaxial tests, and established a settlement prediction model under long-term traffic loads. Xiao et al (2018) tested the effects of thawed frozen soil on the dynamic performance of pile structures and analyzed the vibration properties of the system using the frequency spectrum.…”

Section: Introductionmentioning

confidence: 99%

Dynamic deformation and meso-structure of coarse-grained saline soil under cyclic loading with freeze-thaw cycles

Wan,

Yang,

Wang

et al. 2024

Front. Earth Sci.

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The cumulative deformation properties of subgrade soil under cyclic traffic loads are critical for optimizing pavement structure design and ensuring long-term highway structural performance. This study aims to investigate the coupling effect of freeze-thaw cycles and cyclic loads on the cumulative deformation behaviors and meso-structure of coarse-grained saline soil (CGSS) subgrade filling in high-cold areas. Dynamic triaxial tests and computed tomography (CT) scanning were conducted to analyze the CGSS under different working conditions. The research focused on the dynamic deformation development and damage evolution under varying freeze-thaw cycles and load amplitudes. The research results show that the cumulative deformation behavior of CGSS under cyclic loading is relatively sensitive to the freeze-thaw process. The cumulative dynamic strain increases as the freeze-thaw cycles, with a critical freeze-thaw cycle number of five. The stable cumulative dynamic strain curve exhibits clear three-stage characteristics when plotted in semi-log coordination, with critical loading cycles at 20 and 1,000. After 10–100 loading cycles, the cumulative strain curve quickly shows failure. The CGSS’s low density and pore regions greatly increase after a freeze-thaw cycle. The rise in dynamic stress amplitude notably affects the bonding between soil particles and crystalline salts. The coupling effect of the freeze-thaw cycle and dynamic activity exacerbates the deterioration of soil structure, resulting in variations in CT values within the scanning layer in the final state.

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Section: Introductionmentioning

confidence: 99%

Dynamic deformation and meso-structure of coarse-grained saline soil under cyclic loading with freeze-thaw cycles

Wan,

Yang,

Wang

et al. 2024

Front. Earth Sci.

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“…The conventional spectrum results are calculated to show the vibration properties in a linear system. The empirical modal decomposition (EMD) is used to decompose the vibration signal to identify the dynamic parameters [37][38][39]. EMD is adopted to extract the frequency dependence rocking mode which characterizes the viscoelastic properties of pilesoil interaction.…”

Section: Introductionmentioning

confidence: 99%

Identification of Viscoelastic Property of Pile-Soil Interactions with Fractional Derivative Model

Zatar

Xiao

Chen

et al. 2020

Journal of Low Frequency Noise, Vibration and Active Control

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The viscoelastic property of pile-soil interactions is modeled by fractional derivative method and is used to characterize the structural dynamics of pile and rheological behavior of a thawing frozen soil. A study of the thawing frozen soil impacts on pile structure’s dynamic characteristic is carried out. The frequency spectrum analysis and empirical modal decomposition are used to identify the pile structure dynamic properties. The rocking mode vibration in which pile behaviors like rigid body supported by viscoelastic soil is extracted to capture the viscoelastic property of pile-soil interactions. The rocking mode exhibiting time-varying frequency features is modeled with fractional derivative model and the fractional derivative order is identified. This study proposes a quick and reliable method to identify the viscoelastic property of pile-soil interactions.

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Analysis of Shear Characteristics of Cohesive Soil and Rigid Base: A Case Study of Concrete Base

et al. 2020

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Characterization of the viscoelastic effects of thawed frozen soil on pile by measurement of free response

Cited by 10 publications

References 11 publications

Dynamic deformation and meso-structure of coarse-grained saline soil under cyclic loading with freeze-thaw cycles

Dynamic deformation and meso-structure of coarse-grained saline soil under cyclic loading with freeze-thaw cycles

Identification of Viscoelastic Property of Pile-Soil Interactions with Fractional Derivative Model

Analysis of Shear Characteristics of Cohesive Soil and Rigid Base: A Case Study of Concrete Base

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