Bond Plastic Model for Steel–Concrete Damaged Interface Element
Publication: Journal of Structural Engineering
Volume 145, Issue 5
Abstract
A bond failure criterion, a wave propagation–based dowel action, and an inelastic, three-dimensional, damaged interface element are proposed. The present approach models the behavior of steel–concrete interaction under quasi-static loading and unloading. The decay of the steel–concrete interface is included for variable confinement levels. Existing bond models neglect either the bond path dependency or accurate unloading behavior. Both are addressed in this research. Existing methods model dowel action through empirical relations or contact-based algorithms. However, proper contact surfaces are tedious to define and difficult to stabilize because they may experience abrupt failures in cases involving major damage to concrete. To simulate dowel action, an alternative method to contact and empirical methods is proposed based on the concept of wave propagation. The present interface element is comfortably applied without remarkable complications. Comparison with test results from the literature demonstrates the validity of the proposed element.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 5 • May 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Apr 27, 2018
Accepted: Oct 17, 2018
Published online: Feb 20, 2019
Published in print: May 1, 2019
Discussion open until: Jul 20, 2019
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