METHOD FOR REINFORCING BRIDGE PIER OR THE LIKE

摘要

PROBLEM TO BE SOLVED: To provide a method for reinforcing a bridge pier or the like shortening a construction period and reducing a construction cost by securing a work yard around an aseismatic reinforcing bridge pier of a bridge pier in a river narrow in width and comparatively shallow in depth of water, lifting a reinforcing frame of an underground part above the bridge pier while open-cutting a base part of the bridge pier in a constantly stagnant state of water to achieve construction dispensing with spring water countermeasures, and dropping an underground frame into water after open-cutting and filling underwater unseparative mortar between the bridge pier and the underground frame after backfilling an open cut part. SOLUTION: A reinforcing frame 13a made of steel plates are arranged surrounding the peripheral surface of a columnar structure 8 of the bridge pier or the like erected on a foundation 7 installed underground or underwater. A filler is filled between the columnar structure 8 and the reinforcing frame 13a. The work yard 25 is constructed around the base part of the columnar structure 8. Open-cutting is carried out from the periphery of the base part of the columnar structure 8 to the foundation 7 through the work yard 25. Open-cutting is executed with water 33 left stagnant in an excavated hole 32. COPYRIGHT: (C)2010,JPO&INPIT