Effect of shear strain compatibility and incompatibility approaches in the design of high modulus columns against liquefaction: A case study in Christchurch, New Zealand

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dc.authorid0000-0003-2520-4395en_US
dc.authorid0000-0002-9407-286Xen_US
dc.contributor.authorDemir, Selçuk
dc.contributor.authorÖzener, Pelin
dc.date.accessioned2023-09-14T10:14:14Z
dc.date.available2023-09-14T10:14:14Z
dc.date.issued2022en_US
dc.departmentBAİBÜ, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.description.abstractNowadays, investigating the effectiveness of high modulus columns in liquefaction mitigation is one of the important tasks in earthquake geotechnical engineering. Although there is limited data from the field and laboratory to verify the performance of high modulus columns (HMCs), available case histories, physical model tests, and reliable numerical methods provide important information in order to analyze the role of HMCs in liquefaction mitigation. In this paper, the seismic performance of a liquefied site improved with rammed aggregate piers (RAPs) is investigated through the results of a full-scale field test. Results of cone penetration test (CPT) and cross-hole shear wave velocity (Vs ) test before and after RAP treatment at the test site are assessed to achieve properties of the natural (unimproved) soil, RAP, and the surrounding (improved) soil. The effectiveness of RAPs in liquefaction mitigation is evaluated in terms of pre-and post-improvement factor of safeties against liquefaction, liquefaction-induced deformations, and ground failure indices, which are calculated using shear strain compatibility and incompatibility approaches. The research results showed that RAPs exhibit a satisfying performance when computations are made considering shear strain compatibility in the computation of seismic shear stress reduction factor. On the contrary, the effectiveness of RAPs during the shear strain incompatibility approach is significantly smaller than the ones computed from the current design method based on shear strain compatibility approach. The findings of this study provide a basis for the performance-based ground improvement design through HMCs to mitigate soil liquefaction and also extend knowledge about HMC-improved seismic soil response by presenting the results of liquefaction vulnerability parameters before and after soil improvement of a field test study.en_US
dc.identifier.citationDemir, S., & Özener, P. (2022). Effect of shear strain compatibility and incompatibility approaches in the design of high modulus columns against liquefaction: A case study in Christchurch, New Zealand. Bulletin of Earthquake Engineering, 20(11), 5721-5745.en_US
dc.identifier.doi10.1007/s10518-022-01427-7
dc.identifier.endpage5745en_US
dc.identifier.issn1570-761X
dc.identifier.issn1573-1456
dc.identifier.scopus2-s2.0-85131581921en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage5721en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s10518-022-01427-7
dc.identifier.urihttps://hdl.handle.net/20.500.12491/11699
dc.identifier.volume20en_US
dc.identifier.wosWOS:000807311900001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorDemir, Selçuk
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofBulletin of Earthquake Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHigh Modulus Columnsen_US
dc.subjectLiquefaction Mitigationen_US
dc.subjectRammed Aggregate Piersen_US
dc.subjectSoil Improvementen_US
dc.subjectShear Strain Compatibilityen_US
dc.titleEffect of shear strain compatibility and incompatibility approaches in the design of high modulus columns against liquefaction: A case study in Christchurch, New Zealanden_US
dc.typeArticleen_US

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