-Sannai Maruyama Bridge
-Tokyo International Airport International Airline District GSE Bridge
-Yabegawa Bridge
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| Sannai Maruyama Bridge is a concrete extradosed bridge built for Tohoku Shinkansen Line. The main
span of the bridge is 150m long, which is the longest span of railway bridges
in Japan. Even though the bridge has long spans, the deflection of the
girder is controlled within very limited range in order to enable high
speed crossing of SHINKANSEN trains by applying several new technologies.
Seasonal temperature effect is eliminated by adopting sliding support system. The influence from temperature change of the stay cables is minimized by limiting pylon height. Further, the temperature change of the cables is reduced by encasing them into thick cement grouting. The deflection by train loads is also reduced by employing 2-line bearing system. |
| Location | Aomori pref. |
| Structural Type | 4-span extradosed bridge |
| Bridge Length | 450m |
| Span | 74.18m+150m+150m+74.18m |
| Width | 13.85m |
| Owner | Japan Railway Construction, Transport and Technology Agency |
| Design | Chiyoda Engineering Consultants |
| Construction | Zenitaka, Asanuma, Shida JV |
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| Tokyo International Airport International Airline District GSE Bridge is a 48 PC box ultra-high strength fiber reinforced concrete (UFC) girder bridge for ground support equipment (GSE) vehicles. The use of UFC girder reduced the weights of the approach embankment and bridge superstructure and enabled the construction of a highly durable bridge with 1.86 m-long-girder, which was about 80% of that of conventional PC bridges. In addition, twin perfobond rib shear connectors for girder-slab connections and the wet joints between UFC girders with large shear key for precast segment joins were developed based on full-scale model experiments. |
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| Yabegawa Bridge is a 3-span continuous prestressed concrete cable-stayed bridge having a plane curve built over Yabe River of Fukuoka as a part of Ariake Sea Coastal Road. The center span of the bridge is 261 m, which is the longest span of the prestressed concrete cable-stayed bridge in Japan. The foundations were built by pneumatic caisson method. The depth of caisson is 49.5 m which is the deepest depth in Japan. It was carried out by unmanned work under high atmospheric pressure. Inclined tower was adopted to reduce horizontal reaction of rubber bearing shoe in curved cable-stayed bridge. For compactness, steel husk structure was used to fix the cable to the RC main tower side. The cables consist of corrosive-resistant stands with polyethylene cover and were fabricated in site. |
| Location | Miyama city - Yanagawa city, Fukuoka, JAPAN |
| Structural Type | 3-span continuous prestressed concrete cable-stayed bridge |
| Owner | Ministry of Land , Infrastructure and Transport, Kyushu Regional Development Bureau, Fukuoka National Highway Office |