CONTINUOUS CONCRETE GIRDER AND BRIDGE STRUCTURE USING SAME

摘要

A continuous concrete girder of the present invention comprises: front and rear concrete girders (A, B) installed on the upper part of a pier (2) in a front/rear direction by being spaced apart from each other; a high strength concrete (C) deposited in an area between the front and rear girders (A, B); and a first tendon (210) penetrating the high strength concrete (C), anchoring a front end part in the front concrete girder (A), and anchoring a rear end part in the rear concrete girder (B). The front anchoring part of the first tendon (210) is formed in an area between the rear end part of the front concrete girder (A) and an inflection point of bending moment adjacent to a front side from the rear end part, and the rear anchoring part of the first tendon (210) is formed in an area between the front end part of the rear concrete girder (B) and an inflection point of bending moment adjacent to a rear side from the front end part. As showing in Fig. 5, the high strength concrete (C) is deposited in the area between the front and rear concrete girders (A, B), the first tendon (210) penetrates the front concrete girder (A), the high strength concrete (C), and the rear concrete girder (B), and thus compressive force is introduced to a cross section installing the first tendon (210) therein, thereby preventing a crack from being generated in a concrete slab with respect to sub moment and preventing a crack to a cross beam of a support due thermal shrinkage. Moreover, the girder is continued, thereby preventing the girder from falling in earthquake.;COPYRIGHT KIPO 2019