APPARATUS FOR TENSING V-SHAPED TOWER CABLE TO REDUCING CROSS-SECTION OF TOP OF BRIDGE AND LAUNCHING METHOD THEREOF

摘要

PURPOSE: A V-shaped tower cable tension device and a temporary installation method for reducing a bridge upper side sectional force are provided to adjust tension without adding a separate process and to facilitate to adjust tension in one point. CONSTITUTION: A V-shaped tower cable tension device for reducing a bridge upper side sectional force comprise an inclined tower, a tower vertically moving device(200), and tensional cables(300,400). The tower vertically moving device comprises a first connection member, a second connection member, and an expansion and contraction controlling device(230). The first connection member is a cable made of a strand. The front end of the first connection member is connected to the top end of an inclined member(110) in the front side of the inclined tower. The second connection member is a full thread bolt. The rear end of the second connection member is connected to the top end of a rear side inclined member(120). The expansion and contraction controlling device comprises a center hole jack and a tension block. The expansion and contraction controlling device increases or decreases a distance between the rear end of the first connection member and the front end of the second connection member.