Modeling the Excess Porewater Pressure Buildup in Pyroclastic Soils Subjected to Cyclic Loading
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 150, Issue 12
Abstract
Although significant strides have been made in understanding the liquefaction phenomena, the recurrence of catastrophic seismic events continues to underscore the need for critical research in this area. The aim of the paper is to develop a better predictive model for liquefaction that can correctly describe the process of undrained pore pressure buildup in the case of pyroclastic soil. For this purpose, an experimental program was performed through undrained cyclic triaxial tests on three different pyroclastic soils, i.e., Cervinara (Italy), Campi Flegrei (Italy), and Rangiriri (New Zealand). The analyses of the experimental results show the dependency of the mechanism of excess porewater pressures on the stress history, stress state, and stiffness of the investigated soils by using two key parameters, and , derived from the steady-state theory. A new simplified porewater pressure model whose parameters show a functional relationship with the state parameters has been proposed.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was developed with the contribution of the Program VALERE: “VAnviteLli pEr la RicErca,” DDG No. 516-24/05/2018.
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© 2024 American Society of Civil Engineers.
History
Received: Jul 19, 2023
Accepted: Jul 5, 2024
Published online: Sep 30, 2024
Published in print: Dec 1, 2024
Discussion open until: Feb 28, 2025
ASCE Technical Topics:
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering mechanics
- Geomechanics
- Geotechnical engineering
- Material mechanics
- Materials engineering
- Pore pressure
- Pore water
- Pressure (type)
- Soil analysis
- Soil dynamics
- Soil liquefaction
- Soil mechanics
- Soil pressure
- Soil properties
- Solid mechanics
- Stress (by type)
- Stress analysis
- Stress history
- Structural analysis
- Structural engineering
- Water (by type)
- Water and water resources
- Water management
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