合并(业务)
机械
岩土工程
孔隙水压力
衰减
残余物
材料科学
地质学
数学
物理
光学
算法
会计
业务
作者
Jianhua Wang,Lanting Zeng,Jianwen Ding,Hong Zhang
出处
期刊:Proceedings of the Institution of Civil Engineers
[Thomas Telford Ltd.]
日期:2021-10-01
卷期号:174 (5): 476-487
被引量:3
标识
DOI:10.1680/jgeen.20.00166
摘要
A large-strain consolidation model incorporating vacuum pressure growth propagation (VPGP) under vacuum preloading is proposed. A finite-difference method was developed to predict the vacuum consolidation behaviour. The proposed model can be degenerated into the existing model when the vacuum pressure growth factor reaches 10/day. The rationality of the proposed model was verified and compared with experimental results. The effect of VPGP on the consolidation behaviour of two typical soils was then analysed. A growth in vacuum pressure has a significant effect on consolidation, especially for a growth factor in the range 0–0.5/day. The radial and vertical propagation of vacuum pressure obviously slowed down the dissipation of excess pore-water pressure (EPWP). The maximum difference reached 48% and 37.5% when the radial attenuation factor and the vertical residual factor were in the range 0–0.1/cm and 0.25–1.00, respectively. The maximum value of the EPWP difference of two typical soils reached 65 kPa.
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