Periodic FE-BE Model for the Vertical Dynamic Impedance of Pile Groups Embedded in Unsaturated Soils
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Bibliografische Angaben
| Autor(en): |
Mukai Zhou
(The University of Tokyo, Tokyo, JP)
Di Su (The University of Tokyo, Tokyo, JP) |
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| Medium: | Tagungsbeitrag | ||||
| Sprache(n): | Englisch | ||||
| Tagung: | IABSE Congress: The Essence of Structural Engineering for Society, Ghent, Belgium, 27-29 August 2025 | ||||
| Veröffentlicht in: | IABSE Congress Ghent 2025 | ||||
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| Seite(n): | 2776-2781 | ||||
| Anzahl der Seiten (im PDF): | 6 | ||||
| DOI: | 10.2749/ghent.2025.2776 | ||||
| Abstrakt: |
This study analyzes the vertical dynamic impedance of pile foundations in periodic railway bridges embedded in transversely isotropic unsaturated soil using a periodic finite element-boundary element (FE-BE) coupling model. The pile group is modelled using FE method. The wave motion equations of unsaturated soil are formulated based on Biot’s theory and solved using precise integration method. To account for the interaction of neighboring foundations, the periodic fundamental solution is derived via the Floquet transform. The pile foundations are subsequently incorporated into the periodic FE-BE coupling model. The proposed model enables accurate assessment of the dynamic impedance of pile foundations, improving prediction of railway bridge responses under dynamic actions. |
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| Lizenz: | Die Urheberrechte (Copyright) für dieses Werk sind rechtlich geschützt. Es darf nicht ohne die Zustimmung des Autors/der Autorin oder Rechteinhabers/-in weiter benutzt werden. |
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