DESIGN AND CONSTRUCTION OF THE STIFFENING GIRDER FOR AKASHI KAIKYO BRIDGE

摘要

A truss girder deck is employed for the Akashi Kaikyo Bridge dueto aerodynamic stability, structural efficiency in erection , andeconomy. A pin joint system is applied for hanger support system. Theroadway deck is designed as a series of a 20-span continuous steelfloor system which allows the improvement of drivability .Most of thetruss chord members are determined by gale-force wind load condition,and in order to reduce its own weight, quenched and tempered highstrength steel such as HT780 adn HT690 are used. Considering fatigueendurance, every member of the stiffening girder is designed byimproving welding details and by reducing stress concentrtions. Thispaper introduces the outlines and the characteristic features of thedesign ,fabrication ,and erection.