BRIDGE AND CONSTRUCTION METHOD OF BRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a bridge capable of having excellence in wind-resistance efficiency and obtaining a super-huge bridge having a huge center span (3,000 m class) which has not been erected hitherto. SOLUTION: The bridge 1 has a plurality of main towers 2 and 2 installed at an interval and a bridge girder 3 forming parts stretched to both sides through the main towers 2 and 2 in one box girder 31, and, forming the center between both towers in two box girders 32, and is so constituted that the bridge girder 3 in the vicinity of the main towers 2 is supported by a plurality of diagonal tensile cables 4 fixing each one end of them to the main towers and that the center is supported by a plurality of hanger ropes 5a, etc. suspended from two main cables 5 and 5 stretched through the tower tops 2a of the main towers. Each lower end of the hanger ropes 5a, etc. is connected to the outside edge 3a of the bridge girder of the main cable side suspending the hanger ropes 5a. COPYRIGHT: (C)2007,JPO&INPIT