Discussion on research activity published as bending properties of steel-timber composite axial members formed with friction-type connections using torshear-type high-strength bolts""

Experimental and analytical achievements on the shear stiffness and strength of steel-to-timber connections tightened by high-strength bolts in the above paper are discussed about the following items. 1) The opinion that the shear resistance between steel and timber is attributed to the friction seems illogical, because the shear stiffness is not influenced by the tension reserved in the bolt. 2) The proposed formula for calculating the shear strength seems improper, because the model does not reflect the real nature of the shear resistance. 3) The data of connection, beam, and others may not be consistent, because the water content of the tested timber is not controlled in a limited range.