THE UPPER GIRDER SEGMENT MAKING YARD OF BRIDGE USING LAUNCHING WALL, AND THE INCREMENTAL LAUNCHING METHOD OF BRIDGE WITH TYPICAL SECTION AND WIDEN SECTION USING THAT

An upper girder segment casting yard of a bridge using a launching wall is provided to construct upper girder segments of a bridge having a general section and a wide-width section with an incremental launching method only by installing a launching wall having the sufficient length to support the web of all upper girder segments in a casting yard. The upper girder segment casting yard of a bridge using a launching wall comprises many form footings(10) installed on the rear of an abutment at regular intervals and formed in the type of an isolating footing, two or more launching walls(20) installed on all or partial form footings and formed to have the wide surface in the perpendicular direction to the launching direction to support the web of all upper girder segments having different cross section areas including an upper girder segment for a general section and an upper girder segment for a wide-width section, a variable slide member(30) installed to a support according to the locational change of the web of the upper girder segment installed on the launching wall used for launching the upper girder segment in the bridge-axis direction and formed to have a structure for moving in the perpendicular direction to a bridge axis or supporting and launching the upper girder segment against the whole launching wall, a system form formed in various shapes to manufacture the upper girder segment and composed of a form assembled with wood or steel members, a form support beam supporting the lower part of the form and a form supporter supporting the wing part of the form, and a form lifting device(50) installed on the form footings to lift up and down the system form.