To study dynamic response of the reinforced concrete(RC)slabs,three-dimensional finite element(FE)model of the RC slabs under double blast loading with small explosive charge is established in this paper.Accuracy of the FE model is validated by an experiment.Using the FE model,further studies on the accumulated damage of the RC slabs under double blast loading with small explosive charge are presented.The results show that with the different placement angles of the explosive,the damage zone of the concrete slab surface is always distributed along the length direction of the explosive.Under double blast loading with small explosive charge,damage of the RC slab mainly appears in the first blast cycle.Displacement of the RC slab,axial force and strain of the rebars of slabs increase remarkably in second blast cycle.
关键词
小药量/双重爆炸荷载/钢筋混凝土板/动力响应/数值模型/损伤破坏
Key words
small explosive charge/double blast loading/reinforced concrete slab/dynamic response/numerical analysis/accumulated damage
维普
万方数据