2 . the punching shear carrying capacity could be divided into concrete action and reinforcement dowel action in theory . the paper also gives factors influencing punching shear capacity both normal slabs and sfrc slabs 从受力机理上将板的冲切承载力分为混凝土承载力和钢筋销栓作用两部分，并分析影响混凝土板和钢纤维混凝土板冲切承载力的因素。
