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Bond Plastic Model for Steel–Concrete Damaged Interface Element
| 题名： | Bond Plastic Model for Steel–Concrete Damaged Interface Element |
| 正文语种： | 英文 |
| 作者： | Armin Erfanian, Ph.D., P.Eng.1; Alaa E. Elwi, Ph.D., P.Eng.2 |
| 作者单位： | 1Senior Structural and R&D Engineer, AETECH Consulting, 302-2010 Ulster Rd. NW, Calgary, AB, Canada T2N 4C2 (corresponding author). 2Professor Emeritus of Structural Engineering, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 2R3. |
| 关键词： | Bond; Interface; Concrete; Damage; Failure; Plastic |
| 摘要： | 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 contactbased 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. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 145 |
| 期： | 5 |
| 页码： | 1-10 |
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