Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads
Prestressed concrete cylinder pipe (PCCP) is widely used for long-distance water pipelines throughout the world. However, prestressing wire breakage is the most common form of PCCP damage. For some pipelines that cannot be shut down, a new technique for in-service PCCP repair by externally bonding t...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2019/8053808 |
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| author | Kejie Zhai Hongyuan Fang Bing Fu Fuming Wang Benyue Hu |
| author_facet | Kejie Zhai Hongyuan Fang Bing Fu Fuming Wang Benyue Hu |
| author_sort | Kejie Zhai |
| collection | DOAJ |
| description | Prestressed concrete cylinder pipe (PCCP) is widely used for long-distance water pipelines throughout the world. However, prestressing wire breakage is the most common form of PCCP damage. For some pipelines that cannot be shut down, a new technique for in-service PCCP repair by externally bonding the pipe with layers of carbon fiber reinforced polymer (CFRP) was proposed. A set of three-dimensional finite element models of the repaired PCCP have been proposed and implemented in the ABAQUS software, which took into account the soil pressure, the weight of the PCCP, the weight of the water, and the hydrostatic pressure. The stress–strain features of the PCCP repaired with CFRP of various thicknesses were analyzed. The stress–strain features of different wire breakage rates for the repaired PCCP were also analyzed. The results showed that the strains and stresses decreased at the springline if the PCCP was repaired with CFRP, which improved the operation of the PCCP. It has been found that the wire breakage rates had a significant effect on the strains and stresses of each PCCP component, but CFRP failed to reach its potential tensile strength when other materials were broken. |
| format | Article |
| id | doaj-art-22031d62cb9a4c058b1b595773d8b437 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-22031d62cb9a4c058b1b595773d8b4372025-02-03T05:59:41ZengWileyInternational Journal of Polymer Science1687-94221687-94302019-01-01201910.1155/2019/80538088053808Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined LoadsKejie Zhai0Hongyuan Fang1Bing Fu2Fuming Wang3Benyue Hu4School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaCollege of Water Conservancy & Environmental Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaCollege of Water Conservancy & Environmental Engineering, Zhengzhou University, Zhengzhou 450001, ChinaPrestressed concrete cylinder pipe (PCCP) is widely used for long-distance water pipelines throughout the world. However, prestressing wire breakage is the most common form of PCCP damage. For some pipelines that cannot be shut down, a new technique for in-service PCCP repair by externally bonding the pipe with layers of carbon fiber reinforced polymer (CFRP) was proposed. A set of three-dimensional finite element models of the repaired PCCP have been proposed and implemented in the ABAQUS software, which took into account the soil pressure, the weight of the PCCP, the weight of the water, and the hydrostatic pressure. The stress–strain features of the PCCP repaired with CFRP of various thicknesses were analyzed. The stress–strain features of different wire breakage rates for the repaired PCCP were also analyzed. The results showed that the strains and stresses decreased at the springline if the PCCP was repaired with CFRP, which improved the operation of the PCCP. It has been found that the wire breakage rates had a significant effect on the strains and stresses of each PCCP component, but CFRP failed to reach its potential tensile strength when other materials were broken.http://dx.doi.org/10.1155/2019/8053808 |
| spellingShingle | Kejie Zhai Hongyuan Fang Bing Fu Fuming Wang Benyue Hu Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads International Journal of Polymer Science |
| title | Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads |
| title_full | Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads |
| title_fullStr | Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads |
| title_full_unstemmed | Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads |
| title_short | Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads |
| title_sort | using externally bonded cfrp to repair a pccp with broken wires under combined loads |
| url | http://dx.doi.org/10.1155/2019/8053808 |
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