Strengthening refers to strengthening, partially replacing or adjusting the internal forces of load-bearing structures, components and related parts that are not reliable or required by the owner, so as to make them have the safety, durability and applicability required by the current design code and the owner.
Steel sleeve columns are strengthened by sticking steel plates with adhesive. After the steel plate is pasted, the reinforcement of the original structural members can be improved, and the tensile, flexural and shear properties of the structural members can be improved by using the good bonding performance of structural adhesive, so that the steel plate and concrete can be firmly bonded together to form a whole and effectively transmit stress.