Study of Unstiffened Central Panel between Two Openings in Steel Plate Shear Walls with Stiffeners

Document Type : پژوهشی

Authors

• saied sabori
• alnaz Ahouri
• salahodin Mamazizi

10.22067/civil.v24i1.21999

Abstract

The central panel in steel plate shear walls (SPSWs) with two openings is considered as an I-shaped beam extending the height of the opening. Based on its "height to width" ratio, the dominant behavior can be due to shear or flexure or a combination of the two. The double stiffeners on the vertical sides of the central panel act as columns, comparable to columns of a typical SPSW system. Care is taken to keep the sectional area of the stiffeners above a minimum specified value in order to ensure that shear yielding of the central panel's plate precedes flexural yielding of the stiffeners. The leading dimensions of central panel directly govern the behavior of the panel in shear and flexure. In this paper, central panel has been modeled as an I-shaped beam and equations have been derived for panel aspect ratio and cross sectional area of double stiffeners for different modes of behavior. Theoretical results are then compared with results of finite element analysis using ABAQUS Finite Element software. Based on this comparison, it can be concluded that in SPSWs with two openings, selection of a reasonable aspect ratio for central panel can cause shear dominant behavior in central panel.

Keywords

• Steel Plate Shear Wall
• Rectangular Openings
• Unstiffened Central Panel
• Stiffener

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