Page 114 - JCAU-7-3

Journal of Chinese
Architecture and Urbanism Seismic performance of reinforced SSPWs

44,530.4 kN·m, compared to 35,205 kN·m for circular
reinforcements, which is 21% lower. This difference is
primarily due to the higher stiffness of cross-shaped
configurations compared to circular counterparts.
• The optimum number of perpendicular circular
stiffeners is four for achieving maximum energy
dissipation capacity, measured at 246,627 kN·m,
and three for attaining the highest ductility (9.15),
response modification factor (11.97), and shear
strength (2,120.4 kN).
• Models with combined cross-circular reinforcements
exhibit the highest frame stiffness, reaching 921.5 kN/mm,
Figure 20. Bar graph of the amount of energy absorption in the tested
samples whereas the lowest stiffness is recorded in perpendicular
circular stiffener frames, with 591.2 kN/mm.
4. Conclusion Acknowledgments

In this research, steel plate shear wall models with None.
perpendicular and horizontal cross-shaped and circular
configurations were studied. FE models were created in Funding
ANSYS, and after verifying model accuracy and material
properties, a series of 3-span, 5-story frame models were None.
created to evaluate the effect of stiffener configurations Conflict of interest
and quantity. Pushover analyses were performed, and
the corresponding capacity curves were generated. Key The authors declare that they have no competing interests.
seismic parameters, including ductility factor, response
modification factor, stiffness, and shear capacity, were Author contributions
assessed. Subsequently, the models underwent cyclic Conceptualization: Morteza Naghipour
loading through incremental displacements, and their Formal analysis: Abbasali Jahani, Seyed Mohammad Reza
energy dissipation capacities were determined. Hasani
The following conclusions can be drawn: Investigation: Abbasali Jahani, Seyed Mohammad Reza
• The presence of stiffeners on the infill wall plate Hasani
improves the non-linear behavior of the shear wall Methodology: All authors
system, enhancing both shear capacity and energy Writing – original draft: Abbasali Jahani, Seyed Mohammad
absorption under lateral loads. Reza Hasani
• Steel plate shear walls with circular reinforcement Writing – review & editing: Seyed Mohammad Reza Hasani,
exhibit higher ductility factors than those with Morteza Naghipour
cross-shaped reinforcement. In 1-story models,
perpendicular circular stiffeners achieve the highest Ethics approval and consent to participate
ductility factor of 29.41, whereas perpendicular cross Not applicable.
stiffeners display the lowest ductility factor of 17.10.
• Cross-shaped reinforcements provide greater shear Consent for publication
capacity than circular reinforcements, effectively Not applicable.
preventing elastic shear buckling of the infill plate.
For example, the shear capacity of 1-story frames with Availability of data
perpendicular circular stiffeners is approximately
4,020 kN, whereas that of cross-shaped stiffeners is Data can be provided on reasonable request.
5,810 kN, representing a 45% increase. References
• Analysis of hysteresis curves reveals that shear wall
models with cross-shaped reinforcements dissipate Astaneh-Asl, A. (2001). Seismic Behavior and Design of Steel Shear
more energy than those with circular configurations. Walls. Moraga, CA: Structural Steel Educational Council.
The highest energy dissipation is observed in the Bai, J., Huang, J., Chen, H., Xu, L., Wang, Y. H., & Jin, S. (2022).
model with four cross-shaped stiffeners, reaching Loading protocols for seismic qualification of steel plate

Volume 7 Issue 3 (2025) 12 https://doi.org/10.36922/jcau.5781