arXiv:2606.00056cs.CEcs.AI2026-06

用物理约束神经网络模拟带扰动效应的电渗固结,精度高且稳定。

Physics-Informed Neural Networks for Radial Consolidation of Combined Electroosmotic, Vacuum and Surcharge Preloading Considering Smear Effects

  • 设计带门控结构的PINN模型,提升电极附近压力梯度解析能力。
  • 硬边界约束模型在时变荷载下误差最低,达0.27 kPa。
  • 适用于复杂荷载场景的土体固结仿真,适合岩土工程研究者。

本文提出一种无量纲多域物理信息神经网络(PINN)框架,用于考虑扰动效应和复合真空-堆载加载条件下的电渗径向固结分析。对比三种模型:标准软约束PINN(Std-PINN)、改进门控PINN(Mod-PINN)及嵌入硬边界条件的门控PINN(Mod-HC-PINN)。在四种加载工况下(恒定真空、指数真空、指数真空+阶梯堆载、指数真空+正弦循环荷载)与有限元法(FEM)参考解对比,结果表明:门控结构显著提升恒定真空下电极与扰动区界面处压力梯度的解析精度;时变荷载下软约束模型因需同时学习多重目标而精度下降;通过将阴极边界条件和初始状态嵌入输出结构,硬约束模型显著减轻优化负担并增强物理一致性。在指数真空、阶梯堆载和循环荷载工况下,其平均绝对误差(MAE)分别为0.43、0.41和0.27 kPa。敏感性分析显示,该框架在典型网络结构、配点密度和渗透率比范围内均保持稳健。

原文摘要 · Abstract (English)

This study develops a dimensionless multi-domain physics-informed neural network (PINN) framework for electro-osmotic radial consolidation considering smear effects and combined vacuum and surcharge loading. Three PINN-based models are investigated: a standard soft-constrained PINN (Std-PINN), a modified gated PINN (Mod-PINN), and a modified gated PINN with hard-constraint boundary encoding (Mod-HC-PINN). The models are evaluated against FEM reference solutions under four loading cases, including constant vacuum, exponential vacuum, exponential vacuum with ramp surcharge, and exponential vacuum with cyclic haversine surcharge. The results indicate that the gated architecture applied in Mod-PINN improves the resolution of steep pressure gradients near the cathode and smear-zone interface under constant vacuum loading. Under time-dependent loading, the soft-constrained Mod-PINN shows reduced accuracy because it must learn multiple competing objectives simultaneously. The Mod-HC-PINN mitigates this issue by embedding the cathode boundary and initial conditions into the output structure, thereby reducing the optimization burden and improving physical consistency. The Mod-HC-PINN achieves MAE values of 0.43, 0.41, and 0.27 kPa for the exponential vacuum, ramp surcharge, and cyclic surcharge cases, respectively. Sensitivity analyses further demonstrate that the proposed framework remains robust across practical ranges of network architecture, collocation density, and permeability contrast.

物理信息网络电渗固结岩土工程神经网络

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