Incremental Launching Method for Cayirköy bridges
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Bibliographic Details
| Author(s): |
François Pissot
(Freyssinet International & Cie)
Julien Erdogan (Freyssinet International & Cie) Giulio Scotto (Freyssinet International & Cie) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: The Evolving Metropolis, New York, NY, USA, 4-6 September 2019 | ||||
| Published in: | The Evolving Metropolis | ||||
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| Page(s): | 2306-2313 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/newyork.2019.2306 | ||||
| Abstract: |
Çayirköy viaduct is part of the Northern Marmara motorway, an alternative road to link the western part of the country to Istanbul via the 3rdBosporus Bridge. The 750m long viaduct, made of two carriageways, cross a valley at more than 60m high. This paper gives an overview of the construction methods of this viaduct and focuses on ist specificities. The major ones are earthquake loads to be considered during construction and the launching downhill with a - 2.8% slope. The incremental launching method (ILM) has been completely rethought to be adapted to this viaduct. A system has been designed in order to block the deck during stop phases against earthquakes, but also to brake it during launching phases. Temporary structures associate to ILM will also be described in this paper, as one of the challenges was to adapt equipment from previous projects. |
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| Keywords: |
earthquake post-tensioning ILM viaduct temporary structure downhill
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