Analysis approach for composite steel plate shear walls (CSPSW) reinforced with CFRP
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Date
2021-08-23
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The 2021 World Congress on Advances in Structural Engineering and Mechanics (ASEM21)
Abstract
Steel plate shear walls (SPSWs) have been conducted as a capable system for resisting
lateral forces induced on structures by wind and earthquakes. Adding concrete covering
is a way of improving the behavior of SSWs. Studies by researchers indicated that, by
using the concrete layer, stress is better distributed in the steel plate and the tension field
lines are developed in a wider region. The only difference between the traditional system
and the composited steel plate shear wall with the concrete system is that, in the latter,
there is a gap between the concrete wall and the boundary columns and beams. In the
traditional system, there is no gap, and the concrete directly rests against the boundary
columns and beams. This seemingly simple modification resulted in a significant
improvement in performance as well as an increase in ductility and damage mitigation.
Some researchers showed that the carbon fiber-reinforced polymer (CFRP) would
enhance the structural behavior of SPSWs. Nevertheless, no simple approach has been
presented for composite SPSWs (CSPSWs) reinforced with CFRP. In the present
research, the nonlinear behavior of CSPSW is determined and a method of analysis is
proposed. The comparison between the findings of this approach and those of the finite
element method (FEM) indicates that the proposed method is more accurate and its
relevant computations take less time compared to the FEM. This model provides a good
understanding of the interactions that might occur among different components of the
system. It is also able to predict the overall pushover response, which is used in the
nonlinear analysis of CSPSW systems.
Description
Keywords
SPSW; Finite element method (FEM); CFRP; Nonlinear behavior.