Bearing Capacity of CFRP-Lined PCCP Under Internal Pressure

ZHANG Xiaojie; WU Jiayu; CHEN Jian-Fei

doi:10.3724/j.gyjzG23071211

Volume 54 Issue 6

Jun. 2024

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ZHANG Xiaojie, WU Jiayu, CHEN Jian-Fei. Bearing Capacity of CFRP-Lined PCCP Under Internal Pressure[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(6): 61-71. doi: 10.3724/j.gyjzG23071211

Citation:

ZHANG Xiaojie, WU Jiayu, CHEN Jian-Fei. Bearing Capacity of CFRP-Lined PCCP Under Internal Pressure[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(6): 61-71. doi: 10.3724/j.gyjzG23071211

ZHANG Xiaojie, WU Jiayu, CHEN Jian-Fei. Bearing Capacity of CFRP-Lined PCCP Under Internal Pressure[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(6): 61-71. doi: 10.3724/j.gyjzG23071211

Citation:

ZHANG Xiaojie, WU Jiayu, CHEN Jian-Fei. Bearing Capacity of CFRP-Lined PCCP Under Internal Pressure[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(6): 61-71. doi: 10.3724/j.gyjzG23071211

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Bearing Capacity of CFRP-Lined PCCP Under Internal Pressure

doi: 10.3724/j.gyjzG23071211

1. School of Astronautics, Harbin Institute of Technology, Harbin 150006, China;
2. Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China

Received Date: 2023-07-12
Available Online: 2024-06-24

Abstract

Abstract

The prestressed concrete cylinder pipe (PCCP) may fail at each structural layer under internal pressure. Carbon fiber reinforced polymer (CFRP) lining is one of the most commonly used methods for repairing PCCPs. However, the failure mechanism of CFRP-lined PCCP under internal pressure remains to be fully understood. The paper presents a multilayer ring model of CFRP-lined PCCP under internal pressure. Analytical expressions for the radial displacement, stress and strain of CFRP-lined PCCP were obtained. The analytical results were in good agreement with existing experimental results, which verified the accuracy of the model. The parametric study results showed that the bearing capacity of PCCP under internal pressure increased with the increase of steel cylinder thickness and concrete core thickness. In addition, increasing the prestressing level could improve the cracking resistance capacity. The bearing capacity of CFRP-lined PCCP under internal pressure increased with the increase of CFRP thickness.
- prestressed concrete cylinder pipe,
- carbon fiber reinforced polymer,
- multilayer ring model,
- internal pressure,
- theoretical analysis

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References(42)

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