Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction of Yoshinogawa Sunrise Bridge Deck in the Tokushima-Nanbu Expressway
The Yoshinogawa Sunrise Bridge was constructed as part of the expressway network in Shikoku Island. This bridge is a 1,696.5 m long precast segmental prestressed concrete continuous box girder bridge with 15 spans, making it the longest PC bridge over a river in Japan. To ensure environmental conservation and consider the flight of migratory birds, a concrete box girder bridge without main towers or stay cables was adopted. The span length was set at 130 m to minimize changes in the terrain around the piers and the estuarine tidal flats. The superstructure was constructed using the precast segmental method. The bridge was designed to have a visually clean appearance without any visible bridge accessories, with only concrete-made external appearances. The drainage structure incorporated concrete side gutters integrated with the main body to ensure they are not visible from the exterior. The bridge has piers within the river. The bottom parts of those piers are assumed to be in plastic deformation during the major earthquake, which will be difficult to inspect after the disaster. External prestressing tendons with optical fiber were installed as a monitoring system to measure changes in tension forces of those tendons, enabling the prompt assessment of the bridge's structural integrity.
Construction of Yoshinogawa Sunrise Bridge Deck in the Tokushima-Nanbu Expressway
The Yoshinogawa Sunrise Bridge was constructed as part of the expressway network in Shikoku Island. This bridge is a 1,696.5 m long precast segmental prestressed concrete continuous box girder bridge with 15 spans, making it the longest PC bridge over a river in Japan. To ensure environmental conservation and consider the flight of migratory birds, a concrete box girder bridge without main towers or stay cables was adopted. The span length was set at 130 m to minimize changes in the terrain around the piers and the estuarine tidal flats. The superstructure was constructed using the precast segmental method. The bridge was designed to have a visually clean appearance without any visible bridge accessories, with only concrete-made external appearances. The drainage structure incorporated concrete side gutters integrated with the main body to ensure they are not visible from the exterior. The bridge has piers within the river. The bottom parts of those piers are assumed to be in plastic deformation during the major earthquake, which will be difficult to inspect after the disaster. External prestressing tendons with optical fiber were installed as a monitoring system to measure changes in tension forces of those tendons, enabling the prompt assessment of the bridge's structural integrity.
Construction of Yoshinogawa Sunrise Bridge Deck in the Tokushima-Nanbu Expressway
Nakatani, TakayukiManager (Autor:in) / Koga, KeiichiroAssistant Manager (Autor:in) / Moriguchi, RyoheiChief (Autor:in) / Yamaguchi, TsunehisaAssistant General Manager (Autor:in) / Masumoto, KeitaBranch Manager (Autor:in)
Structural Engineering International ; 35 ; 18-22
02.01.2025
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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