PSI - Issue 66

ScienceDirect Structural Integrity Procedia 00 (2025) 000–000 Structural Integrity Procedia 00 (2025) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 66 (2024) 142–147

8th International Conference on Crack Paths Investigations on crack initiation from steel anchors Lucie Malíková a,b * , Petr Miarka a,b a Czech Academy of Sciences, Institute of Physics of Materials, v. v. i., Žižkova 513/22, 616 00 Brno, Czech Republic b Brno University of Technology, Faculty of Civil Engineering, Institute of Structural Mechanics, Veveří 331/95, 602 00 Brno, Czech Republic Abstract This work is devoted to investigations on concrete cone failures that are typical for cast-in anchors subjected to tensile loading. Numerical simulations were performed to analyze distribution of the tangential stress, especially in the vicinity of the anchor’s corner where the finite element mesh was refined to obtain accurate results. In accordance with the idea of the maximum tangential stress criterion, the direction where the tangential stress reaches its maximum was investigated. Dependences of this angle on the various depths of the anchor’s embedment were analyzed at selected radial distances from the anchor’s corner, which is a significant stress concentrator in the investigated structure. Obtained results were discussed and several conclusions were stated. Further both numerical and experimental research is planned on this kind of structures. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers Keywords: Steel anchors; Concrete cone failure; Finite element method; Maximum tangential stress; Critical distance 1. Introduction Steel anchors often connect different structural elements to a concrete substrate in order to transfer external loading to the concrete structure. Such fastening systems then fail mostly through concrete-related failures, that can be distinguished according to the type of loading (tension/shear): pull-out failure, steel failure, side-face blowout, concrete cone breakout and concrete splitting for anchors subjected to tensile loading or concrete pry-out failure, concrete edge failure and steel failure for anchors subjected to shear loading. For instance, concrete splitting failure is typical when an anchor is located in a relatively thin concrete plate or very close to neighboring anchor/s or 8th International Conference on Crack Paths Investigations on crack initiation from steel anchors Lucie Malíková a,b * , Petr Miarka a,b a Czech Academy of Sciences, Institute of Physics of Materials, v. v. i., Žižkova 513/22, 616 00 Brno, Czech Republic b Brno University of Technology, Faculty of Civil Engineering, Institute of Structural Mechanics, Veveří 331/95, 602 00 Brno, Czech Republic Abstract This work is devoted to investigations on concrete cone failures that are typical for cast-in anchors subjected to tensile loading. Numerical simulations were performed to analyze distribution of the tangential stress, especially in the vicinity of the anchor’s corner where the finite element mesh was refined to obtain accurate results. In accordance with the idea of the maximum tangential stress criterion, the direction where the tangential stress reaches its maximum was investigated. Dependences of this angle on the various depths of the anchor’s embedment were analyzed at selected radial distances from the anchor’s corner, which is a significant stress concentrator in the investigated structure. Obtained results were discussed and several conclusions were stated. Further both numerical and experimental research is planned on this kind of structures. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers Keywords: Steel anchors; Concrete cone failure; Finite element method; Maximum tangential stress; Critical distance 1. Introduction Steel anchors often connect different structural elements to a concrete substrate in order to transfer external loading to the concrete structure. Such fastening systems then fail mostly through concrete-related failures, that can be distinguished according to the type of loading (tension/shear): pull-out failure, steel failure, side-face blowout, concrete cone breakout and concrete splitting for anchors subjected to tensile loading or concrete pry-out failure, concrete edge failure and steel failure for anchors subjected to shear loading. For instance, concrete splitting failure is typical when an anchor is located in a relatively thin concrete plate or very close to neighboring anchor/s or © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers

* Corresponding author. Tel.: +420541147381. E-mail address: lucie.malikova@vut.cz * Corresponding author. Tel.: +420541147381. E-mail address: lucie.malikova@vut.cz

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers 2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers 10.1016/j.prostr.2024.11.063