CABLE STRUCTURE OF SUSPENSION BRIDGE AND CONSTRUCTION METHOD OF THE BRIDGE

摘要

PURPOSE: To increase the structural capacity and efficiency of the whole suspension bridge, and increase the deflection rigidity and the tortion rigidity of the main cable, and improve the stability against wind, when improving the deformation of the main cable in the suspension bridge and as a result, lengthen spans and cope with the requirement to lighten the whole weight. ;CONSTITUTION: Attention is turned to that reversely compensating rigid cable 20 having a smaller diameter than the main cable 5 is hung below the main cable 5. The reversely compensating rigid cable 20 suspended from the main cable 5 by reverse hanger ropes 22 is shaped to vertically describe a parabola protruded upward, within the plane in the axial direction of bridge formed by the main cable 5 and the hanger ropes. A pair of parabolas are symmetrically provided against the span center of a pair of main towers 3.;COPYRIGHT: (C)1996,JPO