Integral abutment bridge construction method of old joint butment bridge

摘要

The present invention is characterized in that the joint quickly changes the aged bridge in a non-joint manner so as to eliminate the necessity of replacing the joint thereafter, to protect the diaphragm support by blocking the leakage, to cope with the expansion and contraction of the bridge upper structure, The present invention provides a method of constructing a joint-aged bridge with a non-jointed bridge in which the safety of the bridge is further improved. According to a preferred embodiment of the present invention, there is provided a method of manufacturing a bridge structure, comprising the steps of: (a) dismantling a connection slab, a backfill and an alternate side joint connection of a joint bridge, and removing all or a portion of the alternate chest wall; (b) a part of the waterproof sheet is laid on the bottom surface of the portion where the rear back fill of the alternation is removed, and a porous pipe for drainage is placed near the alternate rear face, and the fine aggregate is filled around the porous pipe Performing a primary backfill to the rear of the fine aggregate layer; (c) After forming a step with a waterproof sheet as a supporting surface on the upper side of the fine aggregate layer, a waterproof / formwork board and a porous plate are installed in the step, and then the remaining backfill is sequentially performed on the top of the first backfilled layer ; (d) installing a factory precast slab on the top surface of the backfill layer; (e) disposing a penetrating reinforcing bar at the end of the girder supported in turn and placing an end bulkhead reinforcing bar between the adjacent girders 13 and 13; (f) Placing concrete between the pre-cast slab and the girder, where the chest wall is removed, and where the penetrating reinforcing bar (15) and the end bulkhead reinforcing bars are located, to bond the bridge deck to the precast slab So that it is constructed.