1st International Conference on Architectural Heritage at Risk, Tabriz, İran, 21 Ekim 2025, ss.70-80, (Tam Metin Bildiri)
Historic masonry structures represent irreplaceable
components of the world’s cultural heritage but are inherently susceptible to
seismic damage due to their limited tensile strength, material degradation over
time, and lack of ductile behavior. This study presents a systematic review of
existing research concerning the seismic vulnerability of the historic Durak
Han—a seventeenth-century stone-vaulted caravanserai located in close proximity
to the North Anatolian Fault. Nonlinear dynamic analyses, performed using
calibrated finite element models, demonstrate that the structure in its current
condition exhibits critical stress concentrations and excessive lateral
displacements when subjected to ground motions representative of the 2023 Kahramanmaraş
earthquakes, thereby indicating insufficient seismic resilience. Within this
context, three heritage-compatible retrofitting strategies—Nano-Fiber Textile
Reinforced Mortar (NFTRM), conventional Textile Reinforced Mortar (TRM), and
Fabric-Reinforced Cementitious Matrix (FRCM)—are critically reviewed and
comparatively evaluated. The principal aim is to identify the most effective
intervention technique for enhancing shear resistance, controlling deformations,
and improving global stability, while maintaining the architectural and
historical integrity of the structure. Notably, the seismic retrofitting of a
historic inn such as Durak Han has not been previously investigated in the
literature, underscoring the originality and relevance of this study. Findings
from both the literature review and analytical simulations indicate that
advanced composite-based strengthening systems—particularly NFTRM—can
substantially enhance seismic performance while adhering to conservation
principles. Overall, the results emphasize the necessity of integrating
contemporary structural engineering methods with heritage conservation
frameworks to ensure the sustainable protection of historic masonry buildings
located in seismically active regions.