Secondary compression behavior of over-consolidated soft clay after surcharge preloading

Wang, Jun; Zhuang, Heng; Guo, Lin; Cai, Yuanqiang; Li, Mingfeng; Shi, Li

doi:10.1007/s11440-021-01276-9

Cited by 11 publications

(1 citation statement)

References 19 publications

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“…For normally consolidated clays, Λ is generally constant, and the range of Λ is about 4.8~10 [9,[29][30][31]. However, the stress history can affect the value of Λ [32][33][34] and then change the magnitude of the thermal pore water pressure. In order to better reflect the influence of stress history on thermal pore water pressure, the relationship between rebound index C s and OCR is introduced [32]:…”

Section: Calculation Methods Of Thermal Pore Water Pressure With Diff...mentioning

confidence: 99%

A Calculation Method of Thermal Pore Water Pressure Considering Overconsolidation Effect for Saturated Clay

Tian

2022

Applied Sciences

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With the increase of soil consolidation degree, the pore water pressure induced by thermal loading drops dramatically. To conveniently and quickly calculate the thermal pore water pressure inside the soil under different overconsolidation states and quantify overconsolidation effect on thermal pore water pressure, a calculation method of thermal pore water pressure considering overconsolidation effect for saturated clay is proposed. The method is verified by the relevant experimental data, and good agreements were achieved. Through analyzing the influence mechanism of OCR on the thermal pore water pressure, three important findings were captured. (1) For overconsolidated clay, thermal pore water pressure decreases nonlinearly with the increase of OCR. (2) There is a critical threshold of OCR 4.3; when 1 < OCR ≤ 4.3 (slightly overconsolidated state), the ratio of compression line slope to recompression line slope (Λ) of overconsolidated clay is consistent with that of the normally consolidated clay, while when OCR > 4.3 (highly overconsolidated state), the value of Λ is smaller than that of normally consolidated clay. (3) For highly overconsolidated clay (OCR > 4.3), considering the reducing of Λ with OCR, the prediction accuracy of the thermal pore pressure calculation method has been greatly improved; especially when OCR equals 30, the prediction accuracy improves by 92.7% as temperature change achieves 35 °C.

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Section: Calculation Methods Of Thermal Pore Water Pressure With Diff...mentioning

confidence: 99%

A Calculation Method of Thermal Pore Water Pressure Considering Overconsolidation Effect for Saturated Clay

Tian

2022

Applied Sciences

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Energy-based evaluation of undrained cyclic behavior of marine soft clay under multidirectional simple shear stress paths

et al. 2022

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An Experimental Investigation on the Mechanical Behavior of Dalian Red Clay upon Saline Intrusion

Zhang,

Chen,

Liu

et al. 2023

Iran J Sci Technol Trans Civ Eng

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Secondary compression behavior of over-consolidated soft clay after surcharge preloading

Cited by 11 publications

References 19 publications

A Calculation Method of Thermal Pore Water Pressure Considering Overconsolidation Effect for Saturated Clay

A Calculation Method of Thermal Pore Water Pressure Considering Overconsolidation Effect for Saturated Clay

Energy-based evaluation of undrained cyclic behavior of marine soft clay under multidirectional simple shear stress paths

An Experimental Investigation on the Mechanical Behavior of Dalian Red Clay upon Saline Intrusion

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