Open Access

ARTICLE

Analytical solution for one-dimensional consolidation of structured soft soils with continuous drainage boundary

Jianxue Feng¹, Xiuru Ma², Xiaowei Liu², Long Wang³, Zhongjie Wu^4,*, Guoxiong Mei⁵

1 Guangxi Communications Investment Group Corporation Ltd., Nanning 530021, China; Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; School of Civil Engineering and Architecture, Guizhou Minzu University, Guiyang 550025, China
2 School of Civil Engineering and Architecture, Guizhou Minzu University, Guiyang 550025, China
3 School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China
4 * Corresponding author. Guangxi Communications Investment Group Corporation Ltd., Nanning 530021, China
5 Ocean College, Zhejiang University, Zhoushan 316021, China

* Corresponding Authors: Jianxue Feng (), Xiuru Ma (), Xiaowei Liu (), Long Wang (), Zhongjie Wu* (), Guoxiong Mei ()

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería 2024, 40(1), 1-8. https://doi.org/10.23967/j.rimni.2024.01.007

Received 09 January 2024; Accepted 25 January 2024; Issue published 12 February 2024

Abstract

A closed form analytical solution is proposed to analyze the one-dimensional consolidation behavior of structured saturated clay soils under continuous drainage boundary. Firstly, the soil structural properties and arbitrary loading conditions are taken into account in the established mathematical model. Using the finite sine Fourier transform and characteristic function methods, analytical calculation is conducted, and the solution effectiveness is evaluated against the degradation of solutions and the results of finite difference analysis. Finally, the influences of interface parameter, properties of soil structure and structural yield stress on consolidation behaviors are discussed. Results show that the larger the interface parameter is, the easier the soil structure enters the failure stage, and the smaller the consolidation degree is. Furthermore, the time for initiating the failure stage does not change, when the interface parameter and structural yield stress keep unchanged; in the meanwhile, the greater the consolidation coefficient is, the greater the consolidation degree of foundation becomes when the soil structure begins to fail, and the earlier the soil enters the complete failure stage. When the interface parameter is determined, the ratio of structural yield stress to load can accelerate the soil consolidation rate, but all consolidation curves coincide for the same ratio.

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Keywords

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