Concept and Finite-Element Modeling of New Steel Shear Connectors for Self-Centering Wall Systems
Publication: Journal of Engineering Mechanics
Volume 136, Issue 2
Abstract
Self-centering precast concrete walls have been found to provide excellent seismic resistance. Such systems typically exhibit low energy dissipation, requiring supplementary dissipating components to improve their seismic performance. Mild steel shear connectors can provide an economical energy dissipating element. The design and analysis of steel shear connectors for a new precast wall system has been undertaken. A series of finite-element analyses were conducted to investigate the behavior of different types of connectors. Emerged from these analyses is a oval-shaped connector (O-connector) that provided satisfactory force-displacement behavior and appeared well suited for the new wall system in high seismic regions. An extensive experimental test program was then conducted to verify the performance of the chosen O-connector, which confirmed the expected response with sufficient energy dissipation. The experimental data demonstrated good correlation with the finite-element model developed, providing satisfactory confidence in the finite-element technique used for the development of the different connectors.
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Acknowledgments
The writers would like to acknowledge financial support provided by (a) the New Zealand Tertiary Education Commission, (b) the Research and Education Advanced Network New Zealand Ltd., and (c) the U.S. National Science Foundation (NSF) through the International Research and Education in Engineering (IREE) program as a supplement to Grant No. UNSPECIFIEDCMS 0324559. The program directors administered the IREE funding at NSF were Dr. Win Aung and Dr. Douglas Foutch. Any opinions, findings, and conclusions expressed in this paper are those of the writers, and do not necessarily represent those of the sponsors.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 136 • Issue 2 • February 2010
Pages: 220 - 229
Copyright
© 2010 ASCE.
History
Received: Sep 11, 2008
Accepted: Jul 7, 2009
Published online: Jul 17, 2009
Published in print: Feb 2010
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