Abstract
The cracks in a gate storehouse for a flood-diversion sluice of the Wangfuzhou Water Conservancy Project were studied to diagnose the structural safety. The study was based on an integrated method that involved the analysis of the cause of cracks, an assessment of the crack stability, online safety monitoring and diagnosis, and real-time monitoring and control. The results demonstrated that two dominant factors leading to cracks were the non-uniform settlement of the foundation of this gate storehouse structure combined with temperature drops in winter. By comparing crack-tip stress intensity factors at different cracking depths with concrete fracture toughness, the results showed that cracks at the gate storehouse would not continue to propagate, although some time-dependent components separated from the measuring point did not converge but tended to be closed. Therefore, the diagnosis suggests that the cracks at the gate storehouse are currently in a stable state. Additionally, the crack opening index estimated using the small probability method can be used for future real-time monitoring of crack behavior.
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Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (Nos: 52239009 and 52179135). Moreover, the authors would like to acknowledge the invaluable assistance of D. Fei and X. Xu.
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Huang, Y., Li, Z., Xu, S. et al. Cause, Stability Analysis, and Monitoring of Cracks in the Gate Storehouse of a Flood Diversion Sluice. KSCE J Civ Eng 28, 1411–1422 (2024). https://doi.org/10.1007/s12205-024-1413-9
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DOI: https://doi.org/10.1007/s12205-024-1413-9