What question did this study set out to answer?

This study aims to investigate the mechanisms of excess pore water pressure dissipation in saturated sand when subjected to impact loads.

June 13, 2026Proceedings of the Institution of Civil Engineers - Geotechnical Engineering

Impact-induced pore pressure dissipation in saturated sand: test and theoretical analysis

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Authors

DJDandan JinChina Earthquake Administration JZJie ZhangJiangsu University BWBinghui WangJiangsu University of Science and Technology

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Implication

Integrated experimental and theoretical analysis demonstrates pore pressure dissipation in saturated sand under impact loading, highlighting implications for foundation stability.

Key Points

This study aims to investigate the mechanisms of excess pore water pressure dissipation in saturated sand when subjected to impact loads.
Conducted controlled impact tests on one-dimensional sand columns with varying particle sizes and impact amplitudes.
Examined the dissipation process through a two-stage analysis based on permeability and loading conditions.
Developed a modified non-linear compression relationship for better prediction of pore pressure dissipation.
The study identified two dissipation stages: gradual in stage I due to particle rearrangement and rapid in stage II driven by drainage.
Found that stage I duration is longer for lower-permeability sand and is influenced by higher load amplitudes.
Theoretical predictions aligned well with experimental data, confirming the modified model’s superiority in simulating pore pressure dynamics.

Cite This Study

Jin et al. (2026) studied this question.

synapsesocial.com/papers/6a2cf4dafaef96ed7f056fb1 https://doi.org/10.1680/jgeen.25.00173

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Implication

Integrated experimental and theoretical analysis demonstrates pore pressure dissipation in saturated sand under impact loading, highlighting implications for foundation stability.

Impact-induced pore pressure dissipation in saturated sand: test and theoretical analysis

Discussion

Member takes

Implication

Key Points

Cite This Study

Impact-induced pore pressure dissipation in saturated sand: test and theoretical analysis

Discussion

Member takes

Implication

Key Points

Cite This Study

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