METHOD OF GRADUALLY DISMANTLING OVER-PASS BRIDGE AND DEVICE TO PREVENT OVERTURN OF AXIALLY-MOVABLE BRIDGE DISMANTLING MEMBER USED FOR METHOD

摘要

The present invention relates to a method of dismantling an over-pass bridge. The main purpose of the present invention is to facilitate a movement of a bridge dismantling member of the over-pass bridge installed in an upper side of a railroad line or a river wherein a girder and an upper plate are joined to a place where the bridge dismantling member is to be ground. To achieve this, the method of gradually dismantling the over-pass bridge comprises: a first step of punching holes for towing to facilitate a penetration of a wire rope; a second step of cutting the upper plate of the bridge in a longitudinal direction with a diamond wire saw; a third step of towing the bridge dismantling member wherein the girder is joined with the cut upper plate with heavy equipment; a grinding preparation step of transferring the bridge dismantling member to a space where the bridge dismantling member is to be ground; and a grinding step of grinding the bridge dismantling member prepared in the grinding preparation step with a breaker or a crusher. The grinding preparation step includes a bridge dismantling member transferring step transferring the bridge dismantling member in a transverse direction to avoid the railroad line or the river on a lower side of the bridge by loading the bridge dismantling member on an overturn preventing device. Accordingly, in accordance with the present invention, an effect of easily transferring the bridge dismantling member joined with the girder and the upper plate of the over-pass bridge installed over the railroad line or the river to the place where the bridge dismantling member is to be ground is obtained. In addition, an effect of easily dismantling the bridge even in case of operation of the railways on a lower side of the bridge is obtained.;COPYRIGHT KIPO 2017