METHOD TO CONSTRUCT NON-JOINT BRIDGE USING T-SHAPED COMPOSITE GIRDER HAVING TENSILE AND COMPRESSIVE REINFORCEMENT MATERIAL

摘要

The present invention relates to a method to construct a non-joint bridge using a T-shaped composite girder having a tensile and compressive reinforcement material, constructing a bridge by using a T-shaped composite girder with a T-shape cross section having a flange part with an enlarged width formed in an upper part of a cross section including a tensile and compressive reinforcement material to increase the area of a flange receiving a compressive force when being used for a long span, thereby increasing the twisting resistance to enhance the girders cross sectional function to increase the resistance to lateral buckling, and distributing a compressive force generated by the weight of a vehicle to be transferred to an abutment from a girder side of the bridge to prevent the abutment from being cracked. According to a first embodiment of the present invention, the method comprises the following steps: (a) manufacturing a T-shaped composite girder; (b) constructing piles in a row on the bottom part of the ground of a position where a base abutment is installed after arranging the ground; (c) depositing concrete in a head part of the pile and, at the same time, installing as many temporary supporting frames as the number of spanned girders to construct the base abutment; (d) spanning the T-shaped composite girder to the temporary support frame; (e) depositing concrete after assembly of rebars and installation of a mold, to construct a slab of the bridge and a wall abutment; (f) performing backfilling in a rear side of the base and wall abutments to form a backfilling part; and (g) constructing a connection slab connected to the wall abutment in an upper part of the backfilling part.;COPYRIGHT KIPO 2018