Proposal for cable replacement method incorporating arch structure in aging cable-stayed bridges
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Bibliographic Details
| Author(s): |
Kazuhiro Miyachi
(Tokyo Denki University, Saitama, Japan)
Masato Tonegawa (Tokyo Denki University, Saitama, Japan) Shota Nagasawa (Tokyo Denki University, Saitama, Japan) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Construction’s Role for a World in Emergency, Manchester, United Kingdom, 10-14 April 2024 | ||||
| Published in: | IABSE Symposium Manchester 2024 | ||||
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| Page(s): | 148-155 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/manchester.2024.0148 | ||||
| Abstract: |
This study introduces an innovative cable replacement method to address corrosion on an aged cable-stayed bridge with an added arch structure. Through cable influence line analysis, strategies were explored to minimize structural impact during replacement in side spans and central span. As a result, it has been confirmed that the allowable stress of the cables at the crane installation position is within acceptable limits for all cases, and even in the most the highest stress is reduced to about 90 percent. Additionally, strengthening replaced cables or using auxiliary cables during outer cable replacement offer potential for a complete cable replacement. The study also examines the process of erecting an arch rib over the sea, providing a solution for mitigating tension in corroded or broken cables. The proposed cable replacement procedure suggests processes for removal and installation, potentially extending the lifespan of deteriorated cable-stayed bridges. |
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| Keywords: |
corrosion cable-supported bridges Cable-stayed arch bridges breakage reconstruction method
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