Tendon fixing system of long span fire resistance deck strained at deck end and construction method of the same

摘要

The present invention provides a tendon anchoring system for a long span fire resistant deck tensioned and anchored at an end of a deck and a construction method for the same. The tendon anchoring system for a long span fire resistant deck tensioned and anchored at an end of a deck is to prevent deflection in a long span by applying a bending displacement rate to the upper side without damage to a deck plate at an end of a deck and to enable an arrangement direction of a tendon at an anchoring point to correspond to a tension direction. According to a proper aspect of the present invention, the tendon anchoring system for a long span fire resistant deck tensioned and anchored at an end of a deck, which is to control the deflection of a deck plate main body supported on H-beams facing each other by using the tendon, includes: a support for a supporting point of a tendon, which is bonded to two points in an each concrete filing groove opened upwards on the deck plate main body; an end header reinforcing angle individually bonded to a corner on a side of both ends of the deck plate main body; and a tendon anchoring unit bonded to the end header reinforcing angle in the direction of a right angle to an installation direction of the deck plate main body. The both ends of the tendon are inserted between the tendon anchoring unit and inserted into each tendon insertion groove of the support for a supporting point of a tendon installed at the two points. Also, the tendon is tensioned so that an upward bending force is applied to the deck plate main body.