Rocking response of structures with shallow foundations on thin liquefiable layers
In the event of earthquake-induced liquefaction, structures with shallow foundations can suffer excessive settlement and rotation. In this paper, the rotational response of structures with shallow foundations resting on liquefiable layers with thickness equal to or smaller than the width of the foun...
| Glavni autori: | , |
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| Format: | Journal article |
| Jezik: | English |
| Izdano: |
ICE Publishing
2021
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| _version_ | 1826305065316515840 |
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| author | Adamidis, O Gopal Madabhushi, SP |
| author_facet | Adamidis, O Gopal Madabhushi, SP |
| author_sort | Adamidis, O |
| collection | OXFORD |
| description | In the event of earthquake-induced liquefaction, structures with shallow foundations can suffer excessive settlement and rotation. In this paper, the rotational response of structures with shallow foundations resting on liquefiable layers with thickness equal to or smaller than the width of the foundation is examined through a series of dynamic centrifuge experiments. Moment–rotation backbone curves are extracted and the corresponding evolution of rocking stiffness with increasing rotation is depicted, in normalised terms. A stiffness attenuation relation is proposed, which can be used for simplified predictions of maximum and residual rotation using rotational spring and dashpot models. Two such examples are presented, one using an iterative, equivalent-linear rotational spring approximation, and one using Masing's rules for cyclic response, extended with Pyke's hypothesis. |
| first_indexed | 2024-03-07T06:27:12Z |
| format | Journal article |
| id | oxford-uuid:f4b80cf0-4c05-46e3-a849-952159c5dfa3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:27:12Z |
| publishDate | 2021 |
| publisher | ICE Publishing |
| record_format | dspace |
| spelling | oxford-uuid:f4b80cf0-4c05-46e3-a849-952159c5dfa32022-03-27T12:21:54ZRocking response of structures with shallow foundations on thin liquefiable layersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f4b80cf0-4c05-46e3-a849-952159c5dfa3EnglishSymplectic ElementsICE Publishing2021Adamidis, OGopal Madabhushi, SPIn the event of earthquake-induced liquefaction, structures with shallow foundations can suffer excessive settlement and rotation. In this paper, the rotational response of structures with shallow foundations resting on liquefiable layers with thickness equal to or smaller than the width of the foundation is examined through a series of dynamic centrifuge experiments. Moment–rotation backbone curves are extracted and the corresponding evolution of rocking stiffness with increasing rotation is depicted, in normalised terms. A stiffness attenuation relation is proposed, which can be used for simplified predictions of maximum and residual rotation using rotational spring and dashpot models. Two such examples are presented, one using an iterative, equivalent-linear rotational spring approximation, and one using Masing's rules for cyclic response, extended with Pyke's hypothesis. |
| spellingShingle | Adamidis, O Gopal Madabhushi, SP Rocking response of structures with shallow foundations on thin liquefiable layers |
| title | Rocking response of structures with shallow foundations on thin liquefiable layers |
| title_full | Rocking response of structures with shallow foundations on thin liquefiable layers |
| title_fullStr | Rocking response of structures with shallow foundations on thin liquefiable layers |
| title_full_unstemmed | Rocking response of structures with shallow foundations on thin liquefiable layers |
| title_short | Rocking response of structures with shallow foundations on thin liquefiable layers |
| title_sort | rocking response of structures with shallow foundations on thin liquefiable layers |
| work_keys_str_mv | AT adamidiso rockingresponseofstructureswithshallowfoundationsonthinliquefiablelayers AT gopalmadabhushisp rockingresponseofstructureswithshallowfoundationsonthinliquefiablelayers |