Source and Prevention of Cracking of Hot-Dip Galvanization Coating for Steel Beam-Column Joints

Abstract

In case of using hot-dip galvanized steel beam-column joints, cracking of hot-dip galvanization coating occurs, frequently. Simulations of the phenomenon were carried out for different configurations of steel beam column joints. Also, residual stresses by means of welding were measured to consider their effect on the phenomenon. As results, it has been verified that the residual stresses and configuration of the toe of weld were main factors of the phenomenon. Non-Scallop with circular hole type was found to be effective to prevent cracking of hot-dip galvanized steel beam-column joints.