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This paper deals with the load-deflection and load displacement curves of beams basedon the fatigue experiments of plated and unplated RC beams. 本文通过钢筋混凝土芯梁及粘贴钢板补强混凝土复合梁的疲劳试验，研究了它们在疲劳试验过程中载荷和加载线位移及跨中挠度的变化规律。