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Fatigue Crack Propagation and Life Analysis of Stud Connectors in Steel-Concrete Composite Structures

Author

Listed:
  • Da Wang

    (School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China
    School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China)

  • Benkun Tan

    (School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China)

  • Shengtao Xiang

    (School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China)

  • Xie Wang

    (School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China)

Abstract

To investigate the fatigue performance of the stud connectors of steel-concrete structures, fatigue crack propagation analysis and fatigue life calculation were carried out. Firstly, the finite element model with the initial crack based on linear elastic fracture mechanics (LEFM) was established, and the parameter analysis of the stress intensity factors (SIFs) of the studs and cracks with different geometric sizes was performed. Then, the propagation with mixed-type fatigue crack and I-type fatigue crack of the stud were calculated, and the variation of effective SIFs with the fatigue crack depth was analyzed. Finally, the flow chart of stud fatigue life evaluation which considers crack initiation and stable propagation was presented, and the short stud of steel-UHPC composite structures was taken as an example and verified. The calculation results show that the fatigue crack propagation type and the initial crack have an obvious influence on the fatigue life of the stud. It has acceptable accuracy that the fatigue life of short stud in UHPC simulated by considering the crack initiation. The critical damage parameters are greatly affected by the fatigue stress amplitude, and the initiation life of fatigue crack can account for more than 90% of the total fatigue life. This paper can provide a reference for evaluating the fatigue performance of studs in steel-concrete composite structures. Accurate evaluation of the fatigue life of stud connectors conforms to the concept of sustainable development.

Suggested Citation

  • Da Wang & Benkun Tan & Shengtao Xiang & Xie Wang, 2022. "Fatigue Crack Propagation and Life Analysis of Stud Connectors in Steel-Concrete Composite Structures," Sustainability, MDPI, vol. 14(12), pages 1-19, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:12:p:7253-:d:838062
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    References listed on IDEAS

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    1. Alex H. Whitworth & Konstantinos Daniel Tsavdaridis, 2020. "Genetic Algorithm for Embodied Energy Optimisation of Steel-Concrete Composite Beams," Sustainability, MDPI, vol. 12(8), pages 1-17, April.
    2. Dengfeng Yang, 2021. "Analysis of Fracture Mechanics Theory of the First Fracture Mechanism of Main Roof and Support Resistance with Large Mining Height in a Shallow Coal Seam," Sustainability, MDPI, vol. 13(4), pages 1-24, February.
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    Cited by:

    1. Jun Zhang & Da Wang & Shengtao Xiang & Yang Liu & Benkun Tan & Donghuang Yan, 2022. "Optimization Method of Temperature Measuring Point Layout for Steel-Concrete Composite Bridge Based on TLS-IPDP," Sustainability, MDPI, vol. 14(15), pages 1-24, August.

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