A Closed-Form Solution for Large-Strain Nonlinear Consolidation Considering Smear Effect and Time-Dependent Well Resistance

IF 3.6 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-09-07 Epub Date: 2026-07-16 DOI:10.1002/nag.70396

Khrawboklang Kharsyiemiong, Vishwas A. Sawant, Satyendra Mittal

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Abstract

This study presents a comprehensive closed-form solution for the large-strain nonlinear consolidation of soft clay under preloading using prefabricated vertical drains (PVDs). The approach takes into account time-dependent well resistance and smear effect. The research simplifies the loading process by deriving an instantaneous loading response based on the average area of the multistage loading applications. Subsequently, the solution is then confirmed by comparing it to the current implicit analytical formulation, which uses the finite difference method while accounting for varied loading responses and discharge capacity decay constant. Furthermore, the solution is applied to compare with the findings of the existing laboratory tests and field data from the test embankment at Saga Airport in Saga City, Japan. The results demonstrated a strong agreement with laboratory, field data and existing solutions, highlighting the reliability of the proposed solution and its effectiveness in real-world preloading consolidation with PVDs applications.

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考虑涂抹效应和随时间变化的井阻力的大应变非线性固结的封闭解

本研究提出了一种综合的封闭形式解决方案，用于预制垂直排水管（PVDs）预压下软粘土的大应变非线性固结。该方法考虑了随时间变化的井阻力和涂抹效应。通过推导基于多级加载平均面积的瞬时加载响应，简化了加载过程。然后，将其与当前隐式解析公式进行比较，确认该解，该隐式解析公式使用有限差分法，同时考虑了不同的加载响应和放电容量衰减常数。此外，还将该解决方案与现有实验室测试结果和日本佐贺市佐贺机场测试路堤的现场数据进行了比较。结果表明，该解决方案与实验室、现场数据和现有解决方案非常吻合，突出了该解决方案的可靠性及其在PVDs预压加固应用中的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal for Numerical and Analytical Methods in Geomechanics 工程技术-材料科学：综合

CiteScore

6.40

自引率

12.50%

发文量

160

审稿时长

9 months

期刊介绍： The journal welcomes manuscripts that substantially contribute to the understanding of the complex mechanical behaviour of geomaterials (soils, rocks, concrete, ice, snow, and powders), through innovative experimental techniques, and/or through the development of novel numerical or hybrid experimental/numerical modelling concepts in geomechanics. Topics of interest include instabilities and localization, interface and surface phenomena, fracture and failure, multi-physics and other time-dependent phenomena, micromechanics and multi-scale methods, and inverse analysis and stochastic methods. Papers related to energy and environmental issues are particularly welcome. The illustration of the proposed methods and techniques to engineering problems is encouraged. However, manuscripts dealing with applications of existing methods, or proposing incremental improvements to existing methods – in particular marginal extensions of existing analytical solutions or numerical methods – will not be considered for review.