Rapid Treatment Using Vacuum-surcharge Preloading with Dynamic Consolidation Method: Laboratory Model Test

Li, Xiaobing; Li, Jun; Zhou, Yanxin; Tian, Jin; Li, Mingfeng

doi:10.1007/s12205-022-0553-z

Cited by 4 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the advancements in geosynthetics and vacuum preloading technology, prefabricated vertical drains (PVD) have become increasingly prevalent in ground improvement projects owing to their low cost and excellent performance. [1][2][3][4][5][6][7][8][9][10] Consolidation theory, which serves as the theoretical foundation for engineering designs, has long fascinated academics. Barron 11 first proposed the radial consolidation theory for soils improved with sand well, which did not account for well resistance and relied on several assumptions to arrive at an analytical solution.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Large‐strain consolidation of PVD‐improved soils considering depth‐dependent initial void ratio and initial effective stress due to soil self‐weight

Tian,

Wu,

Wang

et al. 2023

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

A governing equation for large‐strain consolidation of PVD‐improved soil is developed based on the equivalent elliptical cylindrical model, which accounts for depth‐dependent initial void ratio and initial effective stress induced by soil self‐weight, well resistance with variable discharge capacity, time‐dependent load, and nonlinear variations of compressibility and permeability. Then, a numerical solution is obtained by means of COMSOL Multiphysics and is validated through comparisons with existing solutions and measured data. The parametric studies show that the difference between large‐strain consolidation and small‐strain consolidation reduces with the decreases of the compression index and applied load. Although the soil self‐weight has little effect on the degree of consolidation in some cases, the soil settlement will be significantly overestimated if the self‐weight is ignored. The development of consolidation slowed as the ratio of compressibility over horizontal permeability increased.

show abstract