Abstract

The static characteristics of the combined joints using fillet weldings and high strength bolts are experimentally investigated in order to check the possibility of accumulation of the strength of each connecting element. In this study 50mm long fillet welding with 5mm size is decided as an unit of welding and M16 or M20 (S10T) high strength bolt is unit of bolt. Combinations of 0-3 units of each connecting element are selected as test specimen. Tottally 76 specimens were tested. It becomes clear that the maximum strength of the combined joints using fillet weldings and high strength bolts is 5-15% smaller than the accumulated value of the slip strength of high strength bolts and the maximum strength of fillet weldings. And the maximum design strength, of combined joints using fillet weldings and high strength bolts, which is calculated by nominal strength has enough safety.

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