One-Dimensional Consolidation Analysis of a Double-Layered Foundation with Exponential Flow Laws Under Continuous Drainage Boundaries

ZHANG Yi; WANG Jia; WU Wenbing; ZONG Mengfan; MEI Guoxiong

doi:10.3724/j.gyjzG23092007

Volume 56 Issue 4

Apr. 2026

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ZHANG Yi, WANG Jia, WU Wenbing, ZONG Mengfan, MEI Guoxiong. One-Dimensional Consolidation Analysis of a Double-Layered Foundation with Exponential Flow Laws Under Continuous Drainage Boundaries[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 249-255. doi: 10.3724/j.gyjzG23092007

Citation:

ZHANG Yi, WANG Jia, WU Wenbing, ZONG Mengfan, MEI Guoxiong. One-Dimensional Consolidation Analysis of a Double-Layered Foundation with Exponential Flow Laws Under Continuous Drainage Boundaries[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 249-255. doi: 10.3724/j.gyjzG23092007

Citation:

ZHANG Yi, WANG Jia, WU Wenbing, ZONG Mengfan, MEI Guoxiong. One-Dimensional Consolidation Analysis of a Double-Layered Foundation with Exponential Flow Laws Under Continuous Drainage Boundaries[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 249-255. doi: 10.3724/j.gyjzG23092007

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One-Dimensional Consolidation Analysis of a Double-Layered Foundation with Exponential Flow Laws Under Continuous Drainage Boundaries

doi: 10.3724/j.gyjzG23092007

1. School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China;
2. Jiangsu Ocean Engineering Research Center for Intelligent Infrastructure Construction, Lianyungang 222005, China;
3. Engineering Research Center of Rock-Soil Drilling & Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China;
4. College of Oceanography, Zhejiang University, Zhoushan 316021, China

Received Date: 2023-09-20
Available Online: 2026-06-06
Publish Date: 2026-04-20

Abstract

Abstract

To explore the timeliness of boundary drainage and the consolidation characteristics of double-layered soil under non-Darcy flow conditions， the one-dimensional consolidation problem of double-layered foundation based on the exponential flow model was studied by introducing continuous drainage boundary conditions. Firstly， the finite difference method was used to solve the two-layered foundation consolidation with exponential flow under continuous drainage boundaries and obtain corresponding solutions， which were then compared and validated against existing research. Then， based on the deduction results， the effects of interface parameters， thickness ratio of upper to lower soil layers， permeability ratio of soil layers， and ratio of compression coefficients on the consolidation degree of the foundation were analyzed. The research results indicated that the larger the interface parameters， the faster the consolidation. However， as the flow index increased， the influence of the interface parameters on the consolidation rate of the double-layered foundation decreased. For the foundation with an upper soft and lower hard layer， a thicker lower harder layer led to faster consolidation； in contrast， for the upper hard and lower soft type， a thicker upper hard layer resulted in a slower consolidation rate. Compared with the flow index of the lower soil， the flow index of the upper soil had a greater impact on the consolidation of the foundation. Therefore， in order to accelerate the consolidation speed of the soil， different soil layers with different properties should be reasonably arranged during construction.
- one-dimensional consolidation,
- double-layered foundation,
- continuous drainage boundary,
- exponential flow model,
- finite difference method

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References(27)

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