PSI - Issue 51

ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Structural Integrity Procedia 00 (2022) 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 51 (2023) 179–184

© 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 ICSID 2022 Organizers Abstract Clothoid (CL)-shaped composite dowels are becoming popular in steel-concrete composite bridge construction recently. In this paper, CL-shaped dowel’s fatigue performance is evaluated. Considering the contact between concrete and steel connector, two stress patterns of the connectors under the bending-shear action and the pure shear loading are simulated, and the detailed crack propagation analysis of the beam is carried out by using ABAQUS sub-model. The stress intensity factor is obtained to describe the fatigue performance of the composite dowel. © 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 ICSID 2022 Organizers Keywords: Pull-out test; composite dowels; fatigue; crack propagation 1. Introduction In recent years, continuous shear connectors have been favored in the design of steel-concrete composite beams for their high stiffness, capacity and ductility (Zhihua et al. 2022, Liu et al. 2017). Composite dowels provide connections between semi-steel girders and concrete by means of steel concealed dowels manufactured using special cut lines in steel profiles or steel plate webs (different shapes of cut lines can be used), which is popular for application in composite bridges in view of the reduced cost due to their ease of prefabrication. The main forms of composite dowels at present are the puzzle-shaped (PZ), the clothoid-shaped (CL) and the Abstract Clothoid (CL)-shaped composite dowels are becoming popular in steel-concrete composite bridge construction recently. In this paper, CL-shaped dowel’s fatigue performance is evaluated. Considering the contact between concrete and steel connector, two stress patterns of the connectors under the bending-shear action and the pure shear loading are simulated, and the detailed crack propagation analysis of the beam is carried out by using ABAQUS sub-model. The stress intensity factor is obtained to describe the fatigue performance of the composite dowel. © 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 ICSID 2022 Organizers Keywords: Pull-out test; composite dowels; fatigue; crack propagation 1. Introduction In recent years, continuous shear connectors have been favored in the design of steel-concrete composite beams for their high stiffness, capacity and ductility (Zhihua et al. 2022, Liu et al. 2017). Composite dowels provide connections between semi-steel girders and concrete by means of steel concealed dowels manufactured using special cut lines in steel profiles or steel plate webs (different shapes of cut lines can be used), which is popular for application in composite bridges in view of the reduced cost due to their ease of prefabrication. The main forms of composite dowels at present are the puzzle-shaped (PZ), the clothoid-shaped (CL) and the 6th International Conference on Structural Integrity and Durability (ICSID 2022) Composite dowel’s fatigue crack evaluation with loading patterns’ effect Zhihua Xiong a, *, Chenyu Zhao a , Xulin Mou a , Wenwen Li a a College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, 710072, China 6th International Conference on Structural Integrity and Durability (ICSID 2022) Composite dowel’s fatigue crack evaluation with loading patterns’ effect Zhihua Xiong a, *, Chenyu Zhao a , Xulin Mou a , Wenwen Li a a College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, 710072, China

* Corresponding author. Tel.: +86-029-87082902. E-mail address: zh.xiong@nwsuaf.edu.cn * Corresponding author. Tel.: +86-029-87082902. E-mail address: zh.xiong@nwsuaf.edu.cn

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 ICSID 2022 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 ICSID 2022 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 ICSID 2022 Organizers 10.1016/j.prostr.2023.10.086