PSI - Issue 54

ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

Procedia Structural Integrity 54 (2024) 460–467

© 2023 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 the scientific committee of the ICSI 2023 organizers The results of the research showed that the load-carrying capacity of the beams with joints was several dozen percent in relation to the capacity of the continuous beam. On the basis of the failure images obtained in the tests, the locations of particular stress concentrations and the failure modes that occurred for the individual joints were identified. The results obtained from the tests conducted may be helpful in assessing the static work of historical wooden structures with carpentry joints and in engineering practise when designing and carrying out repair and conservation works in historic wooden buildings. Therefore, as part of the scientific project, extensive research was conducted on selected longitudinal joints in flexural elements. Laboratory experimental tests were performed on technical scale beam models with reconstructed connections according to the geometry of the historical joints. The tests confirmed that the selected longitudinal joints in the flexural elements could transfer small bending moments. The load-carrying capacity of the beams with the joints was examined and the failure modes of the tested joints were described in the paper. The results of the research showed that the load-carrying capacity of the beams with joints was several dozen percent in relation to the capacity of the continuous beam. On the basis of the failure images obtained in the tests, the locations of particular stress concentrations and the failure modes that occurred for the individual joints were identified. The results obtained from the tests conducted may be helpful in assessing the static work of historical wooden structures with carpentry joints and in engineering practise when designing and carrying out repair and conservation works in historic wooden buildings. International Conference on Structural Integrity 2023 (ICSI 2023) Mechanical behaviour and failure modes of the selected carpentry joints in flexural elements Anna Karolak 1 * , Jerzy Jasieńko 1 1 Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, Wroclaw 50-370, Poland Abstract Paper presents the mechanical behaviour of the selected longitudinal carpentry joints. These joints were applied in historical timber structures over time to obtain the desired length of the wooden element in the structure. Joints could have various forms, from the simpliest and commonly used lap joint to the sophisticated stop-splayed scarf joint, also called the ‘bolt of lightning’ used e.g. in the designs of the Italian Renesaince masters: Leonardo da Vinci and L.B. Alberti. Although the literature presents some descriptions of these types of joints, researchers indicate the need to conduct more research on this topic to obtain more data and a more complete description of their static behaviour and failure patterns, as well as to determine the most advantageous methods of repairing and strengthening these joints in existing objects. Therefore, as part of the scientific project, extensive research was conducted on selected longitudinal joints in flexural elements. Laboratory experimental tests were performed on technical scale beam models with reconstructed connections according to the geometry of the historical joints. The tests confirmed that the selected longitudinal joints in the flexural elements could transfer small bending moments. The load-carrying capacity of the beams with the joints was examined and the failure modes of the tested joints were described in the paper. International Conference on Structural Integrity 2023 (ICSI 2023) Mechanical behaviour and failure modes of the selected carpentry joints in flexural elements Anna Karolak 1 * , Jerzy Jasieńko 1 1 Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, Wroclaw 50-370, Poland Abstract Paper presents the mechanical behaviour of the selected longitudinal carpentry joints. These joints were applied in historical timber structures over time to obtain the desired length of the wooden element in the structure. Joints could have various forms, from the simpliest and commonly used lap joint to the sophisticated stop-splayed scarf joint, also called the ‘bolt of lightning’ used e.g. in the designs of the Italian Renesaince masters: Leonardo da Vinci and L.B. Alberti. Although the literature presents some descriptions of these types of joints, researchers indicate the need to conduct more research on this topic to obtain more data and a more complete description of their static behaviour and failure patterns, as well as to determine the most advantageous methods of repairing and strengthening these joints in existing objects.

* Corresponding author. Tel.:+48 71 320 23 45. E-mail address: anna.karolak@pwr.edu.pl * Corresponding author. Tel.:+48 71 320 23 45. E-mail address: anna.karolak@pwr.edu.pl

2452-3216 © 2023 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 the scientific committee of the ICSI 2023 organizers 10.1016/j.prostr.2024.01.107 2452-3216 © 2023 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 the scientific committee of the ICSI 2023 organizers 2452-3216 © 2023 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 the scientific committee of the ICSI 2023 organizers