Abstract
Abstract. Engineering structures strengthened with FRP composites are gaining popularity, and there is a growing need to understand and compare the behavior of these structures before/after FRP composite strengthening. In this paper, it is aimed to determine the dynamic response of masonry minarets before/after FRP composite strengthening. An Iskenderpaşa historical masonry minaret dating back to XVI century with a height of 21 m located in Trabzon, Turkey was selected as an application. Firstly, 3-D finite element model of the minaret was constituted using ANSYS software. Then, an analytical model of the minaret was analyzed using the 1992 Erzincan earthquake record, which occurred near the area, to determine the dynamic behavior. After this, the cylindrical body of the minaret was strengthened with FRP composite using different configurations and dynamic analyses were performed. Finally, dynamic responses of the minaret before and after FRP composite strengthening, such as displacements and maximum-minimum principal stresses, were compared. At the end of the study, it is seen that displacements had increased along the height of the minaret, maximum and minimum principal stresses occur at the region of transition segment and cylindrical body for all analyses. Also, it is seen from the earthquake analyses that FRP strengthening is very effective on the dynamic responses of the minaret.
Highlights
Historical structures are our cultural values left behind by thousands of years’ cultural accumulation
This paper aimed to determine the dynamic response of masonry minarets before and after Fiber reinforced polymers (FRPs) composite strengthening
TheIskenderpasa historical masonry minaret with a height of 21 m located in Trabzon, Turkey was selected as an application
Summary
Tall structures by their nature are computationally intensive to analyze. They consist of thousands of degrees of freedom and when subjected to strong ground motion from a source, exhibit a very complex response (Krishnan, 2004). The minaret is very thin and tall with semi-circular brick arch bridge was selected for this study, one balcony on its body. The ature) exist relate to dynamic responses of FRP strengthened shaft is the thin, slim body of the minaret and stairs are place thin and tall historical masonry structures such as minarets. In addition to these dimensions, there is a 0.20m diameter stone block in the middle of the minaret.
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