Evaluation of Seismic Performance in Steel Structure with Proposed Parabola Brace by Finite Element Method

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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JR_ARCE-5-3_003

تاریخ نمایه سازی: 17 تیر 1403

Abstract:

Innovative braces in steel structures aim to improve the performance, resilience, and efficiency of buildings under various loads, such as seismic activity. Different types of braces are designed and used in the building according to the seismic needs of the structure. Considering the importance of modern bracing systems, in this research, a ۱۰-story steel structure was modelled with Abaqus software and finite element method (FEM). Steel structures have three types of bracing systems including (a) inverted v braced frame (IVBF), diagonal braced frame (DBF) and (c) proposed parabolic braced frame (PPBF). The structures were subjected to the El Centro earthquake for ۲۵ seconds using the implicit dynamic method. Seismic indexes investigated include von-mises stress, total displacement and total acceleration in the structure and displacement-time, acceleration-time and base shear-time diagrams. The results showed that the proposed parabolic bracing system has a very good performance and has better seismic criteria compared to diagonal braces and reverse v braces. The proposed bracing has greatly increased the power of the steel structure in the dissipation of the earthquake force. The proposed parabolic bracing system can be used as a new bracing system in steel structures.

Authors

Masoud Mahdavi

PhD Student, Department of Structural Engineering, Faculity of Civil Engineering , K. N. Toosi University of Technology, Tehran, Iran

Seyyed Reza Hosseini

MSc Student, Civil Engineering Department, K. N. Toosi University of Technology, Tehran. Iran

Abbas Babaafjaei

MSc Student, Civil Engineering Department, K. N. Toosi University of Technology, Tehran. Iran

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