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Modeling adhesive anchors in a discrete element framework

(2017) MATERIALS. 10(8).
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Abstract
In recent years, post-installed anchors are widely used to connect structural members and to fix appliances to load-bearing elements. A bonded anchor typically denotes a threaded bar placed into a borehole filled with adhesive mortar. The high complexity of the problem, owing to the multiple materials and failure mechanisms involved, requires a numerical support for the experimental investigation. A reliable model able to reproduce a system's short-term behavior is needed before the development of a more complex framework for the subsequent investigation of the lifetime of fasteners subjected to various deterioration processes can commence. The focus of this contribution is the development and validation of such a model for bonded anchors under pure tension load. Compression, modulus, fracture and splitting tests are performed on standard concrete specimens. These serve for the calibration and validation of the concrete constitutive model. The behavior of the adhesive mortar layer is modeled with a stress-slip law, calibrated on a set of confined pull-out tests. The model validation is performed on tests with different configurations comparing load-displacement curves, crack patterns and concrete cone shapes. A model sensitivity analysis and the evaluation of the bond stress and slippage along the anchor complete the study.
Keywords
CHEMICALLY BONDED ANCHORS, NEURAL-NETWORKS, PARTICLE MODEL, SINGLE, ANCHORS, CONCRETE, BEHAVIOR, PREDICTION, CAPACITY, FRACTURE, TENSION, bonded anchors, discrete elements, fastenings, bond-slip law, combined, failure, photogrammetry

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Citation

Please use this url to cite or link to this publication:

MLA
Marcon, Marco, et al. “Modeling Adhesive Anchors in a Discrete Element Framework.” MATERIALS, vol. 10, no. 8, Mdpi Ag, 2017.
APA
Marcon, M., Vorel, J., Nincevic, K., & Wan-Wendner, R. (2017). Modeling adhesive anchors in a discrete element framework. MATERIALS, 10(8).
Chicago author-date
Marcon, Marco, Jan Vorel, Kresimir Nincevic, and Roman Wan-Wendner. 2017. “Modeling Adhesive Anchors in a Discrete Element Framework.” MATERIALS 10 (8).
Chicago author-date (all authors)
Marcon, Marco, Jan Vorel, Kresimir Nincevic, and Roman Wan-Wendner. 2017. “Modeling Adhesive Anchors in a Discrete Element Framework.” MATERIALS 10 (8).
Vancouver
1.
Marcon M, Vorel J, Nincevic K, Wan-Wendner R. Modeling adhesive anchors in a discrete element framework. MATERIALS. 2017;10(8).
IEEE
[1]
M. Marcon, J. Vorel, K. Nincevic, and R. Wan-Wendner, “Modeling adhesive anchors in a discrete element framework,” MATERIALS, vol. 10, no. 8, 2017.
@article{8630520,
  abstract     = {In recent years, post-installed anchors are widely used to connect structural members and to fix appliances to load-bearing elements. A bonded anchor typically denotes a threaded bar placed into a borehole filled with adhesive mortar. The high complexity of the problem, owing to the multiple materials and failure mechanisms involved, requires a numerical support for the experimental investigation. A reliable model able to reproduce a system's short-term behavior is needed before the development of a more complex framework for the subsequent investigation of the lifetime of fasteners subjected to various deterioration processes can commence. The focus of this contribution is the development and validation of such a model for bonded anchors under pure tension load. Compression, modulus, fracture and splitting tests are performed on standard concrete specimens. These serve for the calibration and validation of the concrete constitutive model. The behavior of the adhesive mortar layer is modeled with a stress-slip law, calibrated on a set of confined pull-out tests. The model validation is performed on tests with different configurations comparing load-displacement curves, crack patterns and concrete cone shapes. A model sensitivity analysis and the evaluation of the bond stress and slippage along the anchor complete the study.},
  articleno    = {917},
  author       = {Marcon, Marco and Vorel, Jan and Nincevic, Kresimir and Wan-Wendner, Roman},
  issn         = {1996-1944},
  journal      = {MATERIALS},
  keywords     = {CHEMICALLY BONDED ANCHORS,NEURAL-NETWORKS,PARTICLE MODEL,SINGLE,ANCHORS,CONCRETE,BEHAVIOR,PREDICTION,CAPACITY,FRACTURE,TENSION,bonded anchors,discrete elements,fastenings,bond-slip law,combined,failure,photogrammetry},
  language     = {eng},
  number       = {8},
  pages        = {23},
  publisher    = {Mdpi Ag},
  title        = {Modeling adhesive anchors in a discrete element framework},
  url          = {http://dx.doi.org/10.3390/ma10080917},
  volume       = {10},
  year         = {2017},
}

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