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Life-Cycle Bearing Capacity for Pre-Stressed T-beams Based on Full-Scale Destructive Test

Yushan Ye1, Tao Gao1, Liankun Wang2, Junjie Ma2, Yingchun Cai2, Heng Liu2,*, Xiaoge Liu2

1 China Construction Seventh Engineering Division Corp., Ltd., Zhengzhou, 450004, China
2 School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China

* Corresponding Author: Heng Liu. Email: email

(This article belongs to the Special Issue: Advanced Data Mining in Bridge Structural Health Monitoring)

Structural Durability & Health Monitoring 2025, 19(1), 145-166. https://doi.org/10.32604/sdhm.2024.053756

Abstract

To investigate the evolution of load-bearing characteristics of pre-stressed beams throughout their service life and to provide a basis for accurately assessing the actual working state of damaged pre-stressed concrete T-beams, destructive tests were conducted on full-scale pre-stressed concrete beams. Based on the measurement and analysis of beam deflection, strain, and crack development under various loading levels during the research tests, combined with the verification coefficient indicators specified in the codes, the verification coefficients of bridges at different stages of damage can be examined. The results indicate that the T-beams experience complete, incomplete linear, and non-linear stages during the destructive test process. In the complete linear elastic stage, both the deflection and bottom strain verification coefficients comply with the specifications, indicating a good structural load-bearing capacity no longer adheres to the code’s requirements. In the non-linear stage, both coefficients exhibit a sharp increase, resulting in a further decrease in the structure’s load-bearing capacity. According to the provisions of the current code, the beam can be in the incomplete linear stage when both values fall within the code’s specified range. The strain verification coefficient sourced from the compression zone at the bottom of the flange is not recommended for assessing the bridge’s load-bearing capacity.

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APA Style
Ye, Y., Gao, T., Wang, L., Ma, J., Cai, Y. et al. (2025). Life-cycle bearing capacity for pre-stressed t-beams based on full-scale destructive test. Structural Durability & Health Monitoring, 19(1), 145-166. https://doi.org/10.32604/sdhm.2024.053756
Vancouver Style
Ye Y, Gao T, Wang L, Ma J, Cai Y, Liu H, et al. Life-cycle bearing capacity for pre-stressed t-beams based on full-scale destructive test. Structural Durability Health Monit . 2025;19(1):145-166 https://doi.org/10.32604/sdhm.2024.053756
IEEE Style
Y. Ye et al., “Life-Cycle Bearing Capacity for Pre-Stressed T-beams Based on Full-Scale Destructive Test,” Structural Durability Health Monit. , vol. 19, no. 1, pp. 145-166, 2025. https://doi.org/10.32604/sdhm.2024.053756



cc Copyright © 2025 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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