Resilience-oriented seismic retrofit of heritage masonry minarets using hybrid base isolation and supplemental damping

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dc.authorid0000-0002-4534-3686
dc.authorid0000-0002-8231-9765
dc.contributor.authorErgun, Mustafa
dc.contributor.authorTonyali, Zeliha
dc.contributor.authorKiral, Adnan
dc.contributor.authorElias, Said
dc.date.accessioned2026-02-28T12:17:54Z
dc.date.available2026-02-28T12:17:54Z
dc.date.issued2026
dc.departmentBayburt Üniversitesi
dc.description.abstractHistoric masonry mosques represent a highly vulnerable class of cultural heritage structures whose seismic fragility stems from their complex geometries, heterogeneous material composition, and rigid load-transfer mechanisms. This study presents a resilience-oriented seismic performance improvement of the historic masonry minaret of the Bayburt Grand Mosque, a structure with limited lateral deformation capacity that challenges the applicability of conventional strengthening measures. To address this limitation, a hybrid retrofitting strategy is introduced, integrating lead rubber bearings (LRBs) with supplemental viscous dampers (VDs) at the foundation level. This combined system-implemented for the first time in a historic masonry minaret-aims to enhance energy dissipation and displacement control through a minimally invasive and architecturally compatible approach. Finite element analyses (FEA), coupled with MATLAB-supported optimization routines, were used to calibrate isolator stiffness and damper coefficients. Three configurations were evaluated: fixed-base, LRB-isolated, and hybrid LRB-VD systems. Nonlinear time-history analyses (NTHAs) using the 1992 Erzincan (Otlukbeli) earthquake record quantified displacements, stress-strain responses, and damage progression. Results show that while base isolation mitigates seismic demand, it remains insufficient under restricted deformation capacity. The proposed hybrid system reduces peak horizontal displacements from 22 cm to 12 cm, limits drift ratios below 0.17 %, and lowers maximum tensile stresses from 4.890 MPa to 0.490 MPa-well below the masonry tensile strength of 0.880 MPa. Two iterative analytical design methodologies are additionally introduced to derive effective isolator stiffness and viscous damping coefficients, enabling systematic integration into resilience-focused evaluation frameworks. Overall, the study advances reliability-based, conservation-compatible retrofitting practices for historic masonry minarets and supports sustainable strategies for seismic risk mitigation.
dc.identifier.doi10.1016/j.istruc.2025.110893
dc.identifier.issn2352-0124
dc.identifier.scopus2-s2.0-105025670049
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.istruc.2025.110893
dc.identifier.urihttps://hdl.handle.net/20.500.12403/5998
dc.identifier.volume83
dc.identifier.wosWOS:001639721700003
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Inc
dc.relation.ispartofStructures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260218
dc.subjectHistoric masonry minaret
dc.subjectHybrid retrofitting
dc.subjectLead rubber bearings (LRBs)
dc.subjectViscous dampers (VDs)
dc.subjectDisplacement-restricted structures
dc.subjectIterative design methodology
dc.subjectNonlinear time-history analysis (NTHA)
dc.subjectMATLAB optimization
dc.titleResilience-oriented seismic retrofit of heritage masonry minarets using hybrid base isolation and supplemental damping
dc.typeArticle

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