Document Type : Original Article
Authors
1
MSC Graduate, Civil engineering department, Faculty of Art and Architecture, Islamic Azad University West Tehran Branch,Tehran, Iran
2
Assistant Professor, Civil engineering department, Faculty of Art and Architecture, Islamic Azad University West Tehran Branch,Tehran, Iran
3
Assistant Professor, Civil engineering department, Faculty of Engineering, Islamic Azad University Shahr-e-Qods Branch, Tehran, Iran
Abstract
The cyclic behavior of steel shear walls has been the subject of numerous experimental and numerical investigations in recent years, most of which have focused on unidirectional loading. It should be noted When significant damage associated with bidirectional loading is anticipated, the test should be conducted under bidirectional deformation reversals. The present study was conducted with the aim of investigating the seismic performance of L-shaped steel shear wall under unidirectional and bidirectional cyclic loading. Accordingly, the L-shaped configuration was adopted to better simulate the real response of this system under bidirectional loading. Before creating the studied models in ABAQUS finite element software, verification was done. Then 14 numerical models, under two unidirectional and bidirectional cyclic loading patterns, considering variables such as plate thickness change, vertical boundary elements cross-section change, the use of high-strength steel in the boundary elements, use of simple connections and reduction of cross-section in elements It was created and subjected to nonlinear static analysis. ATC-24 code was used to apply unidirectional loading and FEMA 461 was used for bidirectional loading, and seismic parameters were evaluated. The results show that the finite element models under the bidirectional loading pattern had an increase in resistance of about 40% and hardness of about 20% compared to the average results of the models under unidirectional loading, but the dissipated energy was almost 70% lower than the model under unidirectional loading.
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