Abstract
This study proposed a compound bridge of suspension bridges and cable-stayed bridges with 4000 m super-long-span over the Tsugaru Strait, Japan. Near to the main towers, cable-stayed bridges and prestressed concrete decks are proposed. It is helpful to enhance rigidity and endure the great axial compression force. In the center of the span, suspension bridges and steel box decks are stiffened by trusses, it can reduce self-weigh and the space between girders, thus contribute to aero-elastic stability. RCFT main tower, RC shell pier and RCFT jacket foundation can enhance rigidity and reduce self-weigh. As a result, the live-dead load ratio of proposal is 0.05 and it is equivalent to 2500m-span suspension bridge.
Highlights
Tsugaru Strait Bridge is proposed over the Tsugaru Strait between islands of Honshu and Hokkaido in Japan
The Tsugaru Strait area is situated at the crossroads of Northeast Asia, the Far Eastern part of Russia and North America, it has enormous potential to become an emerging economic zone in the 21st century in light of global economic dynamism and is expected to play a critical role the economic frontier of 2st century
Bridge was designed as a compound bridge of girders is 12m and this will contribute to aero-elastic suspension bridge and cable-stayed bridges and three stability
Summary
A bridge compound of suspension bridges and cable-stayed bridges with 4000 m super-long-span over the Tsugaru Strait is proposed (Brown, 1996). The proposed Tsugaru Strait Bridge is a superlong span bridge with total length of 20 km, consisting South Bridge with 2000 m span on both sides Decks of Centre Bridge: Near to the main towers, (Bounopane and Billington, 1993).
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