earticle

영어

This study is a basic study on the fixing device(Fastener) of the steel structure joint.Four types of T.S. Nut specimens were manufactured and tested. A total of 20 specimens were produced, 5 each. When manufacturing T.S. Nut, the existing long nut was used, and it was manufactured by precision machining so that the T.S. Nut head shear cross section could be cut. In order to reduce material deterioration due to heat that may occur during rotary cutting, cutting oil is used and low-speed machining is applied. The thickness parameter ranged from 0.5mm to 1.25mm. The clamping force(N) and the torque value(T) of the hexagonal high-strength bolt changes according to the shear sectional thickness(a) of the T.S Nut head. Clamping force(N), torque values(T) and torque coefficient(k) were analyzed to examine whether thickness variables affect the required tensile strength. As a result of the analysis, the clamping force(N) and the torque value(T) increased as a whole according to the shear sectional thickness(a) of the T.S. Nut head. In addition, in the case of T.S. Nut head shear thickness(a) 0.5mm to 1.0mm, the difference in torque coefficient(k) was similarly 103% to 105%, so it was found to be sufficiently stable.