新形式長大橋（斜張吊橋）の耐風性に着目した研究

概要

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One of the most important subjects in designing long-span bridges is to ensure aerodynamicstability of superstructure. In order to improve the aerodynamic stability, various researches wereconducted and authors proposed a new type super-long span bridge which is excellent in economicalefficiency and aerodynamic stability. This bridge has structural characteristics both of cable stayedbridge and suspension bridge. And the stiffening girder consists of slotted box girder part for the centerof the main span to improve aerodynamic stability and standard 1-box girder part near the main towersto reduce construction cost of substructure. In this paper, main results of frame structural analysis andwind tunnel test of section model which were conducted in order to determine the structural dimensionsof this new bridge with main span of 2.8km, are outlined first. Then the outline of design of 1/125 scalefull model and the main results of the wind tunnel tests are described.
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