Method for sticking carbon fiber plates through prestress

Abstract

The invention relates to a method for sticking carbon fiber plates through prestress. The method, provided by the invention, can eliminate the bridge deflection and increase the bridge load, and meanwhile, has the characteristics of simplicity and convenience in construction, lower cost, and no influence on the structure and the shape. The technical scheme is that the method comprises the following steps: 1) a plurality of groups of jacking units are placed below beam plates, and in addition, all jacks are started to jack the beam plates up for a certain height, so that the bottom surfaces of the beam plates are positioned on the same planes; 2) the bottoms of the beam plates are repaired; 3) a plurality of rows of carbon fiber plates are fixed at the bottoms of the beam plates, and the carbon fiber plates are stuck to the bottoms of the beam plates through primer; 4) after the primer is dried, one carbon fiber plate is fixed on each carbon fiber plate through the primer, and the sticking is carried out repeatedly for a couple of times; and 5) after the primer is fully dried, all the jacking units descend and the beam plate is back to the original position to produce prestress capable of reducing beam plate deflection after the carbon fiber plates are tensioned.

Description

technical field [0001] The invention relates to a repair method for bridges, in particular to a reinforcement method for bridge girder slabs. Background technique [0002] Affected by factors such as long service life, environmental deterioration, design defects or improper use and maintenance, a large number of cracks will occur after the bridge girder slab deflects, which will not only greatly shorten the service life of the bridge, but also seriously threaten the safety of vehicles and pedestrians. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned background technology and provide a method for prestressing and pasting carbon fiber sheets. This method should be able to eliminate the bridge deflection and increase the bridge load. Shape characteristics. [0004] The technical solution of the present invention is: a method for prestressing and pasting carbon fiber sheets, which is carried out acc...

AI Technical Summary

Problems solved by technology

[0002] Due to factors such as long service life, environmental deterioration, design defects or improper use and maintenance, a large number of cracks will occur after the deflection of the bridge girder slab, which will not only greatly shorten the service life of the bridge, but also seriously threaten the safety of vehicles and pedestrians.

Images