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June 7, 2026Structural Concrete

Numerical investigation on PCCP strengthened by CFRP liner under the combined action of internal and external pressure

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Authors

KZKejie ZhaiZhengzhou UniversityJLJiaxin LiZhengzhou UniversityBXBinghan XueZhengzhou University

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Implication

Randomized trial investigates structural performance enhancement of PCCP using CFRP liners, suggesting improved capacity under pressure.

Key Points

  • This research aims to analyze the mechanical behavior of CFRP-reinforced PCCP under combined internal and external pressures.
  • Developed a three-dimensional finite element model of CFRP-lined PCCP
  • Validated model against experimental data and analytical benchmarks
  • Performed in-depth analysis of parameters affecting structural performance
  • Reinforcing PCCP with eight layers of CFRP elevates external pressure capacity by up to 72.4%
  • Reduction in internal pressure after applying external pressure fails to restore mechanical integrity
  • Study highlights critical factors influencing pipe performance under varying pressure conditions

Cite This Study

Zhai et al. (2026) studied this question.

synapsesocial.com/papers/6a250ac07def13d035e1ad94https://doi.org/10.1002/suco.70673
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