Cyclic cohesive zone modeling for fatigue prediction of concrete-concrete interface in CRTS III slab ballastless track: Theory, algorithm, validation, and application

This paper presents a cyclic cohesive zone model (CCZM) for predicting the interfacial fatigue of concrete-concrete composites in the CRTS III slab ballastless track subjected to high-cycle fatigue loading. The mathematical formulation of the CCZM is detailed, in which the static and the fatigue dam...

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Veröffentlicht in:Engineering structures Jg. 333; S. 120136
Hauptverfasser: Yan, Daobin, Shi, Zixuan, Xu, Yude
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 15.06.2025
Schlagworte:
Concrete-concrete composites
CRTS III slab ballastless track
Cyclic cohesive zone model
High-cycle fatigue
Interfacial bonding
Numerical algorithm
CRTS III slab ballastless track
Interfacial bonding
Concrete-concrete composites
High-cycle fatigue
Cyclic cohesive zone model
Numerical algorithm
ISSN:0141-0296
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Zusammenfassung:This paper presents a cyclic cohesive zone model (CCZM) for predicting the interfacial fatigue of concrete-concrete composites in the CRTS III slab ballastless track subjected to high-cycle fatigue loading. The mathematical formulation of the CCZM is detailed, in which the static and the fatigue damage variables representing the interfacial fatigue evolution are derived based on a mixed-mode bilinear cohesive zone model. The numerical algorithm of the CCZM, combined with a valid cycle jump strategy, is programmed in Fortran as a user-defined material subroutine in Abaqus. The predictive capacity of the CCZM under Mode I, Mode II, and Mode I/II loading conditions is validated against interfacial fatigue benchmarks, including the double-cantilever beam (DCB), end-notched flexure (ENF), and single-leg bending (SLB) tests. Furthermore, the CCZM is applied in a finite element (FE) analysis of the interfacial fatigue at the concrete-concrete interface between the track-slab and self-compacting concrete layer in the CRTS III slab ballastless track under cyclic temperature gradient loading, and the results show that the interfacial fatigue may reach level-I and level-II damage within 11 and 15 years, respectively, indicating a potential need for debonding maintenance. •The CCZM is proposed with newly developed static and fatigue damage variables.•The CCZM is implemented by a numerical algorithm through UMAT subroutine.•The CCZM is validated to capture both single- and mixed-mode fatigue behaviors.•Interfacial fatigue may reach damage limit and require maintenance within 15 years.
ISSN:0141-0296
DOI:10.1016/j.engstruct.2025.120136