A case study comparing seismic retrofitting techniques for a historically significant masonry building's minaret

被引:2
作者
Kiral, Adnan [1 ]
Ergun, Mustafa [2 ]
Tonyali, Zeliha [1 ]
Artar, Musa [2 ]
Senturk, Idris
机构
[1] Recep Tayyip Erdogan Univ, Fac Engn & Architecture, Dept Civil Engn, TR-53100 Rize, Turkiye
[2] Bayburt Univ, Fac Engn, Dept Civil Engn, TR-69000 Bayburt, Turkiye
关键词
FEM; Seismic retrofitting techniques; Masonry building's minaret; Base isolation; Viscous damper; Damper force optimization; Novel design methodology; REINFORCED ELASTOMERIC ISOLATORS; PLASTIC-DAMAGE MODEL; DYNAMIC-RESPONSE; RUBBER BEARINGS; PASHA MOSQUE; BEHAVIOR; EARTHQUAKE; PERFORMANCE; ELEMENT; REHABILITATION;
D O I
10.1016/j.engfailanal.2024.108873
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Historical masonry structures are extremely susceptible to earthquakes due to their characteristic features. Seismic performance and corresponding damage patterns vary between these buildings. Even though the main structure was undamaged, many minarets suffered damage or collapsed due to the transmission of large forces from the main mass to the minaret and the abrupt changes in cross-section due to the geometry of the minaret. This study uses an ancient masonry mosque as a case study, whose minaret and main building are constructed as a single structure. The mosque's minaret under seismic excitation is the focus of this study. The adopted model is called Alaeddin Bey Mosque in Mus,, T & uuml;rkiye. The seismic performance assessment of the minaret, considering various retrofitting options, is mainly based on four critical parameters: base shear, acceleration, displacement, and maximum tensile forces in all three dimensions. The analyzed retrofitting methods include base isolation located in the basement of the mosque, viscous dampers placed only in the upper part of the minaret, Carbon Fiber-Reinforced Polymer fabric fitted to only the minaret, and steel plates applied to only the minaret. Representative structural models of the mosque have been modelled with SAP2000 software. The main novelty of this study is the use of viscous dampers in the minaret. It is the first time a design methodology has been introduced for viscous damper applications in minarets. This methodology aims to prevent local damage to the minaret due to the forces generated by the dampers, while also considering the constraints of limited internal space within the minaret. The finding of this study shows that viscous damper application yields significantly better results compared to the application of Carbon Fiber-Reinforced Polymer fabric and steel plates. However, although base isolation reduces the tensile stress values throughout the entire mosque to levels well below the material's strength, viscous damper application in the minaret significantly reduces tensile stresses only in the minaret. As a result, viscous dampers are recommended for damage reduction in the minaret only. Otherwise, base isolation should be considered for reducing stress values throughout the entire mosque including the minaret. This study contributes towards the development of new seismic retrofitting methods for historic masonry buildings 'minaret.
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页数:24
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