Strength deterioration of karst fillings under dry–wet cycles: Testing and modeling study

Liu, Yanshun; Yang, Teng; Zhang, Xiao; Zhang, Qingsong; Li, Xianghui; Li, Jun; Deng, Z. Y.

doi:10.1007/s10064-023-03347-5

Cited by 4 publications

(2 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, significant progress has been made in studying the influence of drywet cycles on the shear strength τ of slope soil [12][13][14][15][16][17][18][19]. These studies have established predictive models between soil shear strength τ, water content W, and dry-wet cycle times N. However, these models typically establish empirical relationships between the water content W and dry-wet cycles N and soil shear strength separately.…”

Section: Introductionmentioning

confidence: 99%

“…These studies have established predictive models between soil shear strength τ, water content W, and dry-wet cycle times N. However, these models typically establish empirical relationships between the water content W and dry-wet cycles N and soil shear strength separately. The empirical formulas established do not simultaneously consider the combined influence of water content W and dry-wet cycles N on shear strength [12][13][14][15][16][17][18][19]. The related articles mainly focus on research on soils such as silty clay and expansive soil [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Prediction Model of Residual Soil Shear Strength under Dry–Wet Cycles and Its Uncertainty

Ding,

Wang,

Huang

et al. 2023

Water

View full text Add to dashboard Cite

Granite residual soil is widely distributed in Southeast Fujian. Large-scale engineering construction leads to the exposure of residual soil slopes to the natural environment. Affected by seasonal climate factors, the soil of slopes experiences a dry–wet cycle for a long time. The repeated changes in water content seriously affect the shear strength of soil, and then affect the stability of the slope. In order to explore the influence of the dry–wet cycle on the shear strength of granite residual soil in Fujian, an indoor dry–wet cycle simulation test was carried out for shallow granite residual soil on a slope in Fuzhou, and the relationship between water content, dry–wet cycle times, and the shear strength index, including the cohesion and internal friction angle of the granite residual soil, was discussed. The results show that when the number of dry–wet cycles is constant, the cohesion and internal friction angle of the granite residual soil decrease with an increase in water content. The relationship between the cohesion, internal friction angle, and water content can be described using a power function. Meanwhile, the fitting parameters of the power function are also a function of the number of wet and dry cycles. The prediction formulas of the cohesion and internal friction angle considering the number of dry–wet cycles and water content are established, and then the prediction formula of shear strength is obtained. The ratio of the predicted value of shear strength to the test value shall be within ±15%. An error transfer analysis based on the point estimation method shows that the overall uncertainty of the predicted value of shear strength caused by the combined uncertainty of the predicted value of cohesion and the internal friction angle and the single-variable uncertainty of the predicted value of shear strength caused only by the uncertainty of the predicted value of either the cohesion or internal friction angle increases first and then decreases with an increase in the number of dry–wet cycles. All increase with an increasing water content. The maximum standard deviation of the proposed shear strength prediction model of granite residual soil is less than 9%.

show abstract