Mitsubishi Heavy Industries Limited

Kawasaki Jukogyo Kabushiki Kaisha

Sumitomo Heavy Industries, Ltd.

Ishikawajima-harima Heavy Industries Co., Ltd.

Hitachi Zosen Corporation

Mitsui Engineering and Shipbuilding Company Limited

Jfe Engineering Corporation

Kawada Industries, Inc.

Honshu-shikoku Bridge Expressway Company Limited

Incorporated Administrative Agency Public Works Research Institute

Incorporated Foundation Public Works Research Center

Masato Suzawa

Masao Miyazaki

Syuji Shirai

Koichiro Fumoto

Jun Murakoshi

Hideki Shimodoi

A cable-stayed suspension bridge having characteristics of a cable stayed bridge and those of a suspension bridge at the same and time and using one-box and two-box girders in combination is disclosed. The bridge grinder of the cable-stayed suspension bridge includes one-box girders that each extend to both sides through the respective one tower and a two-box girder set in a central portion of the center span between towers in the length direction of the bridge girder. The cable-stayed suspension bridge includes cable-stayed structures in which a respective one of the one-box girders is supported by the tower with plural cables and a suspension structure in which the two-box girder is supported by the plural towers with two main cables and plural hanger ropes. The two-box girder has a central ventilation opening in the central portion as viewed in a transverse direction thereof. The hanger ropes in the suspension structure extend from the main cables almost perpendicularly, and their lower end portions are connected to the end portions in the transverse direction of the central ventilation opening or in the vicinity thereof.

Cable stayed suspension bridge making combined use of one-box and two-box girders

Growing community of inventors

Tokyo, Japan

Masato Suzawa