Structural Reinforcement for Hangers and Main Cable of Bosphorus Bridge
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Bibliographic Details
| Author(s): |
T. Idani
M. Sugimura |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Synergy of Culture and Civil Engineering – History and Challenges, Wrocław, Poland, 7-9 October 2020 | ||||
| Published in: | IABSE Symposium Wroclaw 2020 | ||||
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| Page(s): | 1032-1039 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2020 | ||||
| DOI: | 10.2749/wroclaw.2020.1032 | ||||
| Abstract: |
The structural reinforcement of Bosphorus Bridge in Turkey was implemented from December 2013 to April 2019. This paper focuses on two highly remarkable work items. One is replacement of hangers and the other is reinforcement of main cable. Inspection and structural evaluation of existing inclined hangers were performed, and overstressed and corroded hangers were found. Bridge administrator decided to replace the inclined hanger system with the vertical hanger system. This was the first challenge to replace the inclined hanger system with vertical hanger system for a long span suspension bridge in the world. In conjunction with the hanger replacement, the existing wrapping wires were also replaced with new one. Then severe corrosions and broken wires of main cable were found near the tower. Therefore, additional strands were installed beside the main cable in order to compensate the loss of sectional area due to broken wires. There were lots of difficulties; however the above two works for Bosphorus Bridge were implemented successfully. |
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| Keywords: |
suspension bridge corrosion hangers main cable Inclined Hangers structural reinforcement
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