Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges
With the advantages of high strength, light weight, high corrosion and fatigue resistance, and low relaxation, carbon-fiber-reinforced polymer (CFRP) is an excellent cable material for cable-stayed bridges. However, the relatively high unit price of CFRP compared to that of steel may hinder the larg...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/9/1740 |
| _version_ | 1797503196523921408 |
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| author | Yue Liu Mingyang Gu Xiaogang Liu T. Tafsirojjaman |
| author_facet | Yue Liu Mingyang Gu Xiaogang Liu T. Tafsirojjaman |
| author_sort | Yue Liu |
| collection | DOAJ |
| description | With the advantages of high strength, light weight, high corrosion and fatigue resistance, and low relaxation, carbon-fiber-reinforced polymer (CFRP) is an excellent cable material for cable-stayed bridges. However, the relatively high unit price of CFRP compared to that of steel may hinder the large-scale application of CFRP stay cables. This paper presents the economic comparison between long-span cable-stayed bridges using CFRP cables and the corresponding steel cable-stayed bridges through life-cycle cost analysis (LCCA). Three CFRP cable-stayed bridges with a main span of 600 m, 1200 m, and 1800 m, respectively, along with their steel counterparts, were designed, and their life-cycle costs (LCCs) were calculated. The comparison of LCCs was not only between the CFRP and steel cable-stayed bridges with the same span, but also between the cable-stayed bridges with different spans. Furthermore, the different unit prices of CFRP cables and different replacement frequencies of steel cables were also investigated. The results show that the initial design and construction cost of the long-span CFRP cable-stayed bridge is higher than that of the corresponding steel cable-stayed bridge, although using CFRP cables can reduce the materials used, primarily due to the higher unit price of the CFRP cable. Despite the higher initial cost, the long-span CFRP cable-stayed bridge can still achieve lower LCC than the steel cable-stayed bridge, because it has significantly lower rehabilitation cost and user cost, as well as slightly lower vulnerability cost. Furthermore, with the increase in the main span and the decrease in the unit price of CFRP cables, the LCC advantage of the long-span CFRP cable-stayed bridge becomes more obvious. |
| first_indexed | 2024-03-10T03:47:05Z |
| format | Article |
| id | doaj.art-92bbfbb35aa44e61b68fcf2cc3dc9b42 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:47:05Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-92bbfbb35aa44e61b68fcf2cc3dc9b422023-11-23T09:05:34ZengMDPI AGPolymers2073-43602022-04-01149174010.3390/polym14091740Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed BridgesYue Liu0Mingyang Gu1Xiaogang Liu2T. Tafsirojjaman3Research Institute of Urbanization and Urban Safety, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, ChinaThe Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Pingleyuan Road 100, Beijing 100124, ChinaResearch Institute of Urbanization and Urban Safety, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, ChinaCentre for Future Materials (CFM), School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD 4350, AustraliaWith the advantages of high strength, light weight, high corrosion and fatigue resistance, and low relaxation, carbon-fiber-reinforced polymer (CFRP) is an excellent cable material for cable-stayed bridges. However, the relatively high unit price of CFRP compared to that of steel may hinder the large-scale application of CFRP stay cables. This paper presents the economic comparison between long-span cable-stayed bridges using CFRP cables and the corresponding steel cable-stayed bridges through life-cycle cost analysis (LCCA). Three CFRP cable-stayed bridges with a main span of 600 m, 1200 m, and 1800 m, respectively, along with their steel counterparts, were designed, and their life-cycle costs (LCCs) were calculated. The comparison of LCCs was not only between the CFRP and steel cable-stayed bridges with the same span, but also between the cable-stayed bridges with different spans. Furthermore, the different unit prices of CFRP cables and different replacement frequencies of steel cables were also investigated. The results show that the initial design and construction cost of the long-span CFRP cable-stayed bridge is higher than that of the corresponding steel cable-stayed bridge, although using CFRP cables can reduce the materials used, primarily due to the higher unit price of the CFRP cable. Despite the higher initial cost, the long-span CFRP cable-stayed bridge can still achieve lower LCC than the steel cable-stayed bridge, because it has significantly lower rehabilitation cost and user cost, as well as slightly lower vulnerability cost. Furthermore, with the increase in the main span and the decrease in the unit price of CFRP cables, the LCC advantage of the long-span CFRP cable-stayed bridge becomes more obvious.https://www.mdpi.com/2073-4360/14/9/1740carbon-fiber-reinforced polymercable-stayed bridgelong-spanlife-cycle cost |
| spellingShingle | Yue Liu Mingyang Gu Xiaogang Liu T. Tafsirojjaman Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges Polymers carbon-fiber-reinforced polymer cable-stayed bridge long-span life-cycle cost |
| title | Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges |
| title_full | Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges |
| title_fullStr | Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges |
| title_full_unstemmed | Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges |
| title_short | Life-Cycle Cost Analysis of Long-Span CFRP Cable-Stayed Bridges |
| title_sort | life cycle cost analysis of long span cfrp cable stayed bridges |
| topic | carbon-fiber-reinforced polymer cable-stayed bridge long-span life-cycle cost |
| url | https://www.mdpi.com/2073-4360/14/9/1740 |
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