THE ENLARGEMENT CONSTRUCTION METHOD FOR BASE OF BRIDGE WITH GUIDES AND MOLDS IN THE SHAPE OF PIPES

摘要

An extension method for the cross section of a foundation of a bridge using a pipe shaped guide and a form is provided to improve the precision of construction by installing a form in order not to be influenced with depth and the speed of a running fluid. An extension method for the cross section of a foundation of a bridge using a pipe shaped guide and a form comprises: a step(S1) for fixing and setting up a supporting part form covering a post of a bridge post on a post; a step(S2) for fixing and setting up a pipe shaped guide in a vertical direction along the outer edge of the supporting part; a step(S3) for pile-driving a form along the inside of each guide and fixing the form on the floor; a step(S4) for arranging the upper end of the form to have the fixed height; a step(S5) for removing the guide; a step(S6) for binding the remaining forms around the pillar and integrating the remaining forms; a step(S7) for removing the supporting part; a step(S8) for arranging steel reinforcing bars inside the form; a step(S9) for pouring concrete indie the form and curing the concrete; and a step(S10) for deforming the form around the post.