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Seismic performance of stainless-steel built-up box columns subjected to constant axial loads and cyclic lateral deformations
, Article Structures ; Volume 33 , 2021 , Pages 4080-4095 ; 23520124 (ISSN) ; Sadrara, A ; Jalali, S. R ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
The seismic behavior of stainless-steel built-up box columns subjected to constant axial loads and cyclic lateral deformation that are used in special moment frames (SMFs) has been investigated through finite element (FE) analysis. A total of 208 numerical models were conducted to cover a range of parameters affecting the seismic behavior of the columns. These include the web slenderness ratio, flange slenderness ratio, global slenderness ratio, axial load level, and lateral loading protocol. The performance indices of overstrength factor, axial shortening, out-of-plane deformation, plastic hinge length, and rotation capacity were calculated and compared. Local buckling of the columns also...