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A Macro-element for Pile Groups Subjected to Vertical Eccentric Load
https://orcid.org/http://orcid.org/0000-0003-2116-1930
https://orcid.org/http://orcid.org/0000-0001-7755-9054
https://orcid.org/http://orcid.org/0000-0002-9993-5353
https://orcid.org/http://orcid.org/0000-0002-0547-4171
https://orcid.org/http://orcid.org/0000-0001-9147-4209
This work proposes a mathematical approach to derive the displacement pattern of pile groups subjected to vertical eccentric load. To this end, a new macro-element is formulated in the framework of strain-hardening elasto-plasticity. The equations are developed by assuming an associated flow rule for the evaluation of the plastic deformations and an exponential relationship for the load-displacement curve of the group. The collapse domain is approximated by a parabolic equation while the yield surface has the same shape of the collapse surface and is scaled homothetically through a hardening function accounting for the past load history of the foundation. The evolution of this state variable is expressed by a pertinent hardening law. The proposed approach is validated against data from centrifuge experiments on pile groups embedded in clay.
A Macro-element for Pile Groups Subjected to Vertical Eccentric Load
https://orcid.org/http://orcid.org/0000-0003-2116-1930
https://orcid.org/http://orcid.org/0000-0001-7755-9054
https://orcid.org/http://orcid.org/0000-0002-9993-5353
https://orcid.org/http://orcid.org/0000-0002-0547-4171
https://orcid.org/http://orcid.org/0000-0001-9147-4209
This work proposes a mathematical approach to derive the displacement pattern of pile groups subjected to vertical eccentric load. To this end, a new macro-element is formulated in the framework of strain-hardening elasto-plasticity. The equations are developed by assuming an associated flow rule for the evaluation of the plastic deformations and an exponential relationship for the load-displacement curve of the group. The collapse domain is approximated by a parabolic equation while the yield surface has the same shape of the collapse surface and is scaled homothetically through a hardening function accounting for the past load history of the foundation. The evolution of this state variable is expressed by a pertinent hardening law. The proposed approach is validated against data from centrifuge experiments on pile groups embedded in clay.
A Macro-element for Pile Groups Subjected to Vertical Eccentric Load
https://orcid.org/http://orcid.org/0000-0003-2116-1930
https://orcid.org/http://orcid.org/0000-0001-7755-9054
https://orcid.org/http://orcid.org/0000-0002-9993-5353
https://orcid.org/http://orcid.org/0000-0002-0547-4171
https://orcid.org/http://orcid.org/0000-0001-9147-4209
This work proposes a mathematical approach to derive the displacement pattern of pile groups subjected to vertical eccentric load. To this end, a new macro-element is formulated in the framework of strain-hardening elasto-plasticity. The equations are developed by assuming an associated flow rule for the evaluation of the plastic deformations and an exponential relationship for the load-displacement curve of the group. The collapse domain is approximated by a parabolic equation while the yield surface has the same shape of the collapse surface and is scaled homothetically through a hardening function accounting for the past load history of the foundation. The evolution of this state variable is expressed by a pertinent hardening law. The proposed approach is validated against data from centrifuge experiments on pile groups embedded in clay.
A Macro-element for Pile Groups Subjected to Vertical Eccentric Load
Springer Ser.Geomech.,Geoengineer.
Ferrari, Alessio (editor) / Rosone, Marco (editor) / Ziccarelli, Maurizio (editor) / Gottardi, Guido (editor) / Iodice, Chiara (author) / Iovino, Maria (author) / Di Laora, Raffaele (author) / de Sanctis, Luca (author) / Mandolini, Alessandro (author)
National Conference of the Researchers of Geotechnical Engineering ; 2023 ; Palermo, Italy
Geotechnical Engineering in the Digital and Technological Innovation Era ; Chapter: 26 ; 210-217
2023-06-17
8 pages
Article/Chapter (Book)
Electronic Resource
English
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