Study of Crack Propagation in Concrete Beams Based on Extended Finite Element Method

DOI

10.2991/978-94-6463-847-9_24How to use a DOI?

Keywords

Extended finite element; crack propagation; different reinforcement; bearing capacity; CMOD

Abstract

Concrete, as a widely used construction material, is prone to cracking under external loads and other factors. The initiation and propagation of cracks can reduce the stiffness and load-bearing capacity of structures, accelerate structural degradation, and even pose safety risks. In this study, the cracking process of three-point bending concrete beams with various reinforcement configurations and prefabricated initial cracks was simulated using the extended finite element method (XFEM). The load-displacement (P-δ) and load-crack mouth opening displacement (P-CMOD) curves were analyzed. The results indicate that, for beams with prefabricated cracks, the addition of 45° inclined reinforcement bars reduces the peak load and leads to a more linear crack propagation path. In contrast, the further inclusion of longitudinal reinforcement increases the peak load and causes the cracks to propagate along a curved path, with multiple flexural cracks forming near the loading point. Both the P-δ and P-CMOD curves display linear behavior during the initial loading stage. After crack initiation, the stiffness and slope gradually decrease, and following the peak load, the load declines and the curves tend to flatten.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Jiangong Chen
AU  - Mingli Jiang
AU  - Ziyi Wu
PY  - 2025
DA  - 2025/09/23
TI  - Study of Crack Propagation in Concrete Beams Based on Extended Finite Element Method
BT  - Proceedings of the 2025 6th International Conference on Urban Construction and Management Engineering (ICUCME 2025)
PB  - Atlantis Press
SP  - 217
EP  - 227
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-847-9_24
DO  - 10.2991/978-94-6463-847-9_24
ID  - Chen2025
ER  -