Evaluation of vertical effective stress and pile tension capacity in sands considering scour-hole dimensions

Lin, Cheng; Jiang, Wenyu

doi:10.1016/j.compgeo.2018.09.013

Cited by 16 publications

(2 citation statements)

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“…In terms of the scouring test, the area of the local scouring area is dependent on scour hole size, topography, hydraulic parameters, scouring procedure, etc. (Sui et al, 2006;Farhoudi and Shayan, 2014;Petersen et al, 2015;Lin and Jiang, 2019;Xiao et al, 2021), and scour evolution can be estimated with empirical methods (Wei et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Study on erosion and stability of the ecological slope

Tao

Lei²,

Gong³

et al. 2023

Front. Earth Sci.

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Rainfall is the main influencing factor causing slope erosion, landslide, and instability in loess; thus, it is vital to comprehend the process of rainfall erosion on various slope surfaces and water penetration inside the slope. In this paper, the loess sample is from Heifangtai in Gansu Province, and triaxial shear tests were conducted on loess with roots under varying water contents to evaluate the slope-reinforcing impact of roots. The slope surface erosion process was analyzed using a soil moisture sensor and matric suction meter to monitor the variation of matric suction in the middle slope and slope foot in response to varying precipitation levels. The numerical simulation approach is utilized to analyze the fluctuation of slope stability under the effect of varying rainfall intensities and humid heat, and the analytical solution of the safety factor is compared to the model solution. The results indicate that the shortest generation time for bare slope runoff is 6 min, whereas the greatest generation time for the Bermuda grass slope is 12 min; the shorter the period, the less water penetration and the simpler it is to reach the slope erosion stage. The slope’s rise increases runoff velocity, strengthening water resistance on the slope surface. When the test slope is 30°, the maximum mass of scouring sediment on the bare slope is 15.2 g from 24 to 36 min, compared to 14.7 g from 24 to 36 min when the test slope is 60°. The amount of scouring reduces as the slope increases. The slope safety factor declined from 3.51 to 2.84 after 24 h of heavy rain, and the loss rate accelerated as the rainfall intensity increased.

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Section: Introductionmentioning

confidence: 99%

Study on erosion and stability of the ecological slope

Tao

Lei²,

Gong³

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…the entire soil layer above the depth of the local scour are removed) making the foundation design too conservative with increase in costs and materials (Lin, Han 2014); for instance, this simplified general scour technique overestimates the lateral displacement of single piles in sands under horizontal load by a factor of 1.5 (Lin, Han 2014). Furthermore, recent studies have characterized the influence of the scour hole dimensions on the lateral load capacity of single piles using centrifuge tests, three-dimensional finite element method (FEM) simulations, and analytical studies (Chortis, Askarinejad 2020;Liang, Zhang 2018;Lin and Jiang 2019;Qi, Gao 2016;Zhang, Chen 2017), in which the scour hole is simplified as an inverted truncated cone. Lin (2016) proposes a calculation method for laterally loaded single piles in soft clay under scour conditions by modifying the p-y curve (Lin, Han 2016).…”

Section: Introductionmentioning

confidence: 99%