Bridge construction method using precast prestressed concrete beam manufacturing method for straight and curved bridge

摘要

PURPOSE: A bridge construction method by using a manufacturing method of a precast prestressed concrete beam for a straight bridge or a curved bridge is provided to maintain, transport and construct the bridge easily, and to cut down construction cost by connecting the prestressed concrete beam segments with a connecting tendon and a main tendon. CONSTITUTION: A prestressed concrete beam(100) is manufactured with the segment, and composed of a connecting tendon(10) installed in a tendon storage unit with the upper and lower double flat structure of the prestressed concrete beam and strained and anchored at both sides of the prestressed concrete beam, and a main tendon(20) strained and installed in a parabola-shape at the center part of both ends of the prestressed concrete beam. The prestressed concrete beam segments are integrated by installing and anchoring the main tendon in the prestressed concrete beam.