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피라미드형 뒤벨을 갖는 강판·콘크리트 합성보의 피로강도
이재영(Jae Young Lee),양승현(Seung Hyoun Yang),이경동(Kyeong Dong Lee) 한국강구조학회 1993 韓國鋼構造學會誌 Vol.5 No.3
A steel plate-concrete composite slab with pyramidal shear connectors, named PSC composite slab, is expected to have sufficient bending strength and flexural rigidity for loads during and after construction. Fatigue problems play an important role in designing composite slab as bridge decks under traffic conditions. In this paper, a series of fatigue tests were carried out on several types of PSC beams under welding and loading conditions. The results are as follows : (1) the fatigue failure of PSC beams results from the tensile fracture of bottom steel plate, and (2) fatigue strength of the plate for two million cycles can be estimated at 1156㎏/㎠ from the S-N curves.