Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Numerical analysis of new self-centering brace with arc plate for improving the seismic performance

Document Type : Original Article

Authors
Mahdi malekmohammadpour 1
soheil monajemi nejad 2
Abdolreza Sarvghad Moghadam 3
1 PhD candidate of earthquake engineering, Civil engineering faculty, Islamic Azad University Central Tehran Branche, Tehran, Iran
2 Assistant professor, Civil engineering faculty, Islamic Azad University central Tehran Branche, Tehran-Iran
3 Associate Professor, Structural Engineering Research Center, International Institute of Earthquake Engineering and Seismology, Tehran-Iran
10.22065/jsce.2024.422590.3256
Abstract
Self-centering braces are the structural systems which cause to reduce the drift of structures after earthquakes. In this paper, a new self-centering brace is proposed to improve the seismic performance of the structures. Also, it can be reduced the permanent of deflection in the structures after earthquake. The advantages of this brace is the facility of construction compatible with the construction possibility in Iran, low cost, high capacity of axial force, high energy dissipation, development capability and use in the structures. For this purpose, the components of proposed brace have been presented and the behavior of brace has been extracted using numerical modeling. Also, results demonstrated the arched steel pales has the high influence in the damping of proposed brace systems. In addition, the parametric studies have been studied and the effects of these parameters in the behavior of the proposed brace were investigated. Parameters which considered includes thickness, curvature radius, arched spring width. Also, the results of the analysis show that with the increase in the thickness of the steel plate, the energy consumption capacity increases significantly. At the same time, the results show that when the thickness of the steel plate increases, the elastic deformation ability increases and entering the plastic area is difficult.
Keywords
self-centering brace
finite element simulation
arc plates
cyclic analysis
damping
flag hysteresis behavior

Subjects

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  • Receive Date 15 December 2023
  • Revise Date 14 June 2024
  • Accept Date 24 July 2024