Some applications of interaction domains to pile foundations design
Some applications of interaction domains to pile foundations design
Pile foundations are generally checked against eccentric vertical loads by referring to the most loaded pile in the group, whose length is set to achieve a design bearing capacity at least equal to its design vertical load. All other piles in the group are then assigned the length obtained in this way. Intuitively, any pile group designed with this method is left with plenty of spare bearing capacity, well beyond the demand from minimum safety factors. In contrast, interaction domains allow to treat a pile group as a whole system and to include the contribution of each pile into the overall bearing capacity of the foundation, allowing the mobilisation of limit bearing capacity for most piles in the group. The lack of closed-form solutions made in the past the use of interaction domains impractical. However, some recent advances now provide analytical relationships for the full shape of the domain, without limitations to the pile group geometry.Some applications of interaction domains are presented in the paper for two Italian High Speed Railway projects, currently under construction.
Angelo Lambrughi; A. Chiarelli; M. Orlandini; Alessandro Mandolini
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
Contact Information
- Secretary General - Dr A M McNamara
- Email: [email protected]
- Phone: +44 20 7040 8154
- City, University of London
- Northampton Square
- London EC1V 0HB. United Kingdom