Analytical and numerical investigation into the effect of bending and shear on the behavior of thin steel plate shear wall

In recent decades, steel shear walls have drawn considerable attention as a robust system againstlateral loads in different types of buildings, particularly in high-rise buildings. Results ofconducted experiments on steel shear walls under cyclic loading indicate large stiffness,sufficient strength, appropriate ductility, and high energy dissipation caused by earthquakesin this seismic lateral load resisting system. If the structure is low-rise once using steel shearwalls, shear displacements are dominant determining the lateral stiffness of the structure.However, for high/medium-rise structures or walls with aspect ratios larger than 1, big axialdeformations of columns and intensification of their effects at higher locations cause bendingdisplacements to be dominant. In this paper, in order to investigate bending and shearbehavior of this system, 1 to 3-story steel shear walls are examined using a modified slopedeflectionmethod where the obtained results are then compared with the results obtained bythe plate-frame interaction model and numerical and experimental models as well. Due to theabsence of a diagonal tension field in finite element models and assumption of full yield forthe plate, a discrepancy is observed in the results for the plate-frame interaction model.Therefore, a correction factor should be considered for the modified slope-deflection method.

کلیدواژه ها:

steel shear wall ، bending ، shear ، modified slope-deflection method