Abstract
The chapter discusses the effects of surrounding members on the postbuckling behavior of thin steel plate shear walls (TSPSW). Steel plate shear walls in buildings are known to be an effective and strong mean for resisting lateral forces. These walls, while having suitable rigidity, are capable to absorb and dissipate large amount of energy that can lead to better behavior in earthquakes. The view of many structural engineers is to use heavy stiffeners to reinforce and increase the buckling capacity of these walls. On the other hand, if the walls are left unstiffened and let buckle, their energy absorption will increase significantly due to the postbuckling capacity. The results show that, unlike the present view, the flexural stiffness of surrounding members has no significant effect, neither on the elastic shear buckling nor on the postbuckling behavior of shear walls. On the other hand, the torsional rigidity has a significant effect on the elastic buckling load but nothing on post-buckling.
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