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전제상,우상익,이성행,정경섭,JUN, Je Sang,WOO, Sang Ik,LEE, Seong Heang,JUNG, Kyoung Sup 한국강구조학회 1996 韓國鋼構造學會 論文集 Vol.8 No.3
H/T(High Tension) bolt is generally being used in joining the members of steel structure. It has some difficulties in management such as an adequate fastening force and a selection of proper instrument for fastening. T/S(Torque Shear Type High Tension) bolt which is more convenient and easier than H/T bolt in quality control has recently been developed. T/S bolts are produced and widely used these days in domestic, but those have not a detail regulation for their on. Those are only being used according to the specification for the H/T bolts. In this study, we tried to confirm the soundness of T/S bolts by the fatigue test of the modified specimens. First, we measured the reduction rate of the initial axial force with time at bolts. Second, we investigated the slip forces of bolts when the test specimen is loaded in tension. Third, we implemented the fatigue tests. During the test, we measured the variation of the axial forces of bolts under the cyclic loading. Finally, we compared and analyzed the fatigue behavior of H/T and T/S bolt, by S-N curve diagrams that are obtained in this study.
전제상(Je Sang Jun),우상익(Sang Ik Woo),이성행(Seong Heang Lee),정경섭(Kyoung Sup Jung) 한국강구조학회 1996 韓國鋼構造學會誌 Vol.8 No.2
H/T(High Tension) bolt is generally being used in joining of members of steel structure. But it has some difficulties in management such a adequate fastening force, a selection of proper instrument for fastening. T/S (Torque Shear type) bolt which is more convenient and easier in quality control has recently been developed. As H/T bolts, T/S bolts are also producted and widely used in the country. But those are now being used only according to the specification for the H/T bolts without a detail regulation. In this study, we attempted to confirm the soundness of T/S bolts by the fatigue test of the modified specimens. First, measured the reduction rate of the initial axial force in bolts with time, second, we investigated the slip forces of bolts when the test specimen is loaded in tension. In the last step, we implemented the fatigue tests, and during the testing, also measured the variation of the axial forces of bolts at the cyclic loading. Finally, we compared and analyzed successfully the fatigue behavior of H/T and T /S bolt by S-N curve diagram.