In the top-down construction method, an axial force under construction from steel column to concrete pile is transmitted by bond, stud connectors or bearing resistance at the end of the column.
Recently, the cross-section area of the pile has been smaller than before, and eccentricity of steel column tends to increase.
Focusing on bond resistance between steel column and concrete pile and shear resistance of stud connector, the axial strength of the concrete pile head embedded with steel column is evaluated by cover concrete thickness, eccentricity, and concrete compression strength as parameters.
