SHEAR STRENGTHENING METHODS OF CONCRETE STRUCTURES BY USING ANCHOR

摘要

The present invention relates to a shear reinforcing method of a concrete structure using an anchor that reinforces the concrete structure against a shear crack formed in the concrete structure. The shear reinforcing method includes the steps of: visually verifying the shear crack formed in the concrete structure and measuring the angle of the shear crack; cleaning the surface of the concrete structure; forming an anchor groove on the concrete structure so that the direction of the shear crack verified in the step of verifying the direction of the shear crack becomes vertical; inserting a mechanical anchor or a chemical anchor formed with a binder and a threaded portion into the anchor groove; and coupling a nut and a washer to the anchor and fastening the nut to fasten the shear cracked portion. The effective shear reinforcement is carried out by inserting the anchor in a direction perpendicular to the shear crack, and the anchor is fastened by the washer and the nut at the rear of the anchor, thereby improving the shear reinforcement. When it is applied to the shear crack diagonally formed, the shape of the washer is deformed in order for the nut to be effectively acted.