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2013 Tanaka Awards

Bridges in the Hirose-gawa Area
・Transportation Bureau City of Sendai
・Docon Co., Ltd.
・JV of P.S. Mitsubishi Construction Co., Ltd.,Fuji P.S. Co., Ltd.,
and Higashinihon Concrete Co., Ltd.

The Hirosegawa Bridge and Nishikoen Viaduct are railway bridges in Sendai Subway Tozai Line, crossing the Hirosegawa River and Nishikoen Park. Sendai City held a design competition and these bridges were selected. It was the first design competition for railway bridges in Japan.
The feature of this design concept was converting the “annoying bridges that cut through the park” into a “stage for new activities”.
The considerations for excellent aesthetic design and new structural idea in this bridge that should contribute significantly to the development of future bridge technology deserve the Japan Society of Civil Engineers Tanaka award.

 

Terasako Chocho-ohashi Bridge
・West Nippon Expressway Company Limited, KYUSYU Branch
・Sumitomo Mitsui Construction Co.,Ltd.
・Doyu Daichi Co.,Ltd.
・Uemuragumi Co.,Ltd.
The TERASAKO chocho-ohashi bridge is a 712.5m long, 87.5m maximum span and 10-span continuous PC box girder bridge in the Higashi-Kyusyu expressway.
A precast concrete panel in the shape of a butterfly, called “Butterfly web”, has been applied to the bridge as the first case in the world.
This web is a pre-tensioning PC member which used high strength fiber-reinforced concrete and does not use a re-bar.
The weight, cost, and construction period was reduced by using this web and the durability and maintenance was improved. 
The application of “butterfly web” in this bridge, which should contribute significantly to the development of future bridge technology, deserves the Japan Society of Civil Engineers Tanaka award.

 

Kakamigahara Bridge
・Kakamigahara City
・Nippon Engineering Consultans Co., Ltd.
・M+M Design Office
・Japan Bridge & Structure Institute, Inc.
・Eau Ltd.
・Shimizu Corporation
・Maeda Corporation
・Ichikawa Koumuten Co., Ltd.
・Daiyuu Co., Ltd.
・Gotou Kouji Co., Ltd.
・Dai Nippon Construction
・Nittou Kogyo Co., Ltd.
・Obayashi Corporation
・Ouken Co., Ltd.
Kakamigahara Bridge is a 10-span continuous fin-back prestressed concrete bridge over Kiso river and a part of Naka-Koami line connecting Jogo-cho and Kawashimakoami-machi in Kakamigahara city.
This bridge was designed to have gentle curves to be harmonious with surrounding mountainous view. To achieve an early service for traffic, the cantilever method using the launching girder system operable even during flood season was selected and the cantilever part and pier head were constructed at the same time.
The considerations for design and construction method made in this bridge that should contribute significantly to the development of future bridge technology deserve the Japan Society of Civil Engineers Tanaka award.

 

Kasumi Bridge
・Yokohama City Road Bureau Construction Department bridge division
・Northern Japan Machinery Co.Ltd
・Toshida Construction Co. Ltd
・Chubachi Construction Co. Ltd
・Nippon Chuzo Co.Ltd
The Kasumi Bridge is a road bridge spanning the Shin-Yamashita Canal in Naka-ku, Yokohama City. Its construction involved the relocation and reuse of undamaged steel members and bearings salvaged from two sections of a historic Pratt truss bridge (built in 1896) that carried the Nippon Railway Tsuchiura Line (the present Joban Line) and was later readapted for the construction of the former Egasaki Railway Overpass (demolished in 2009).
 The Kasumi bridge, which should contribute significantly to the development of future bridge technology, deserves the Japan Society of Civil Engineers Tanaka award.

 

Metropolitan Expressway Yaesu Route Shiodome Viaduct
・Tokyo Metropolitan Government Bureau of Construction
・Metropolitan Expressway Company Limited
・Pacific Consultants Company Limited
・IHI Infrastructure Systems Company Limited
・Shimizu Corporation
Shiodome Viaduct, a part of the Metropolitan Expressway Yaesu Route, was required to be replaced for the construction of the urban ring road No.2. Removing and rebuilding the viaduct were in an urban busy intersection (Daily traffic: 50,000 vehicles), thus some technologies had been employed to shorten the period of construction, mitigate the impact of environment and existing viaducts, and improve its maintenance workability. Especially the bridging techniques carrying a main girder by multi axis vehicle into the intersection and hoisting by PC cable connecting a steal rigid frame support mitigated to disturb the traffic flow and contributed to innovate technologies for bridging in urban area. Consequently, this viaduct deserves the Japan Society of Civil Engineer Tanaka Award.

 

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