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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 10    October 2019

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Improving behavior of semi-supported steel plate shear walls
Ali GHAMARI1, Abbas AKBARPOUR2, Ali GHANBARI3

1. Department of Civil Engineering, Darreh Shahr Branch, Islamic Azad University, Darreh Shahr, Iran;
2. School of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran;
3. Department of Structural Engineering, Aria University of Science and Sustainability, Tehran, Iran

Abstract:In spite of the good performance of the steel plate shear wall (SPSW) in recent earthquakes and experimental studies, the need for huge columns to surround the infill plate is a major shortcoming of the system. This shortcoming can be resolved by using semi-supported SPSW. The semi-supported SPSW has secondary columns that prevent the transfer of stress from the infill plate to the main columns. In spite of extensive experimental and numerical investigations on SPSWs, there are many ambiguities regarding the behavior of the semi-supported SPSW. Although stress in the columns is reduced, incomplete diagonal tension field action is formed in the infill plate that creates new problems. In this paper, a new type of semi-supported SPSW is presented in which the steel plate and the secondary columns are angled. The creation of the angle of the plate and the secondary column makes it possible to use the full capacity of the steel plate as well as the capacity of the secondary columns. Numerical results showed that the wall with a 60° angle has a favorable performance relative to the semi-supported wall. Moreover, with the 60° angle, stiffness, strength and energy absorption is increased. The angle of the secondary columns has little effect on the non-elastic stiffness. Nevertheless, using a wall with an angle of more than 90° can neutralize the wall’s behavior relative to conventional walls. Therefore, the wall with a 60° angle as an optimal angle is recommended.

 

Key words: steel plate shear wall (SPSW); ductility; stiffness; ultimate strength; R factor

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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