Jul 06, 2017

Hitachi Zosen Wins JSCE's Tanaka Award--Highest Honor in the Field of Bridges and Steel Structures

Hitachi Zosen Corporation has received a 2016 Tanaka Award (Excellence in Bridge Design and Construction), presented by the Japan Society of Civil Engineers (JSCE), for seismic retrofitting of the Katashinagawa Bridge.

Tokyo and Niigata, came in 2011 from East Nippon Expressway Co., Ltd. Hitachi Zosen was responsible for detailed design and construction of the superstructure. Katashinagawa Bridge is a massive truss bridge extending 1,034 meters in length, a maximum 169 meters in span length, and a maximum 69 meters in pier height. Having won a 1985 Tanaka Award (Excellence in Bridge Design) also at the time of construction, it is a representative bridge of Japan. Retrofitting work involved a modified jack-up method to safely exchange the bearings with a high reaction force (maximum 39,000 kN), use of dynamic analysis and the finite element method (FEM) to assess the safety of existing members, and the adoption of friction dampers for the first time in a bridge for ease of maintenance. The latest technologies and expertise were incorporated to improve seismic resistance reasonably, taking into account cost efficiency and workability, all while preserving the visible features of the award-winning bridge.

â– Outline of award-winning bridge
1. Company: East Nippon Expressway Co., Ltd. Kanto Regional Head Office
2. Design: Hitachi Zosen Corporation, Oriental Consultants Co., Ltd.
3. Construction: Hitachi Zosen Corporation, Raito Kogyo Co., Ltd.
4. Location: Tone-gun Showa-mura—Numata-shi, Gunma
5. Structure: Superstructure: Steel 3-span continuous deck truss bridge 3 segments, reinforced concrete deck
                   Substructure: Box abutment, reinforced concrete wall pier, deep foundation (A1, P1), caisson
                   foundation (P2, P3, P4, P5, P6, P7), spread foundation (P8, A2)
6. Length: 1,033.9 m

NR photo-1.jpg

Katashinagawa bridge