Adjoint method for joining steel reinforcement members without welding.
コンステック
In the seismic retrofitting of steel frame buildings, we have developed the "Adjoint Method," which involves bonding reinforcement members to existing H-shaped steel and existing square steel pipes using epoxy resin adhesive. The Adjoint Method is a new joining technique that completely eliminates on-site welding work through a unique adhesive bonding system. By removing the need for welding, the fire risk is reduced, and associated tasks such as complicated fire protection measures and checking for residual flames can be omitted. This significantly improves the construction period and flexibility of the work. In particular, it enables safe and efficient construction in facilities such as factories and warehouses that handle flammable materials, where seismic retrofitting was previously difficult due to fire risks. Additionally, it can accommodate construction during limited hours, such as at night or on holidays, allowing for renovation work to be carried out with minimal disruption to facility operations. 【Features】 - No need for strict fire protection measures since on-site welding is not used. - No bolt holes are made in existing members, preventing cross-sectional loss (minimal hole drilling is required when bonding to the side of square steel pipes). - Since no tensile forces occur at the adhesive joint, high adhesive strength in the shear direction can be expected.
