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为了探讨活性粉末混凝土在超高层结构中应用的可能性,以一结构高度为222.7m的超高层筒中筒结构为例,将框筒柱和剪力墙的普通混凝土替换成活性粉末混凝土,对两种结构的自重、动力特性、结构侧移、抗震性能及稳定性等进行比较与分析。结果表明:活性粉末混凝土具有较高的韧性及强度;在满足现有规范的前提下,活性粉末混凝土框筒柱和剪力墙自重分别比原结构减轻了54%和50%;活性粉末混凝土柱可替代型钢混凝土柱;活性粉末混凝土剪力墙的截面尺寸由刚度和稳定性控制;活性粉末混凝土代替普通混凝土可以减小构件截面、增加建筑的使用面积,从而减小结构的自重,降低地震作用,改善结构的抗震性能。
In order to investigate the possibility of using reactive powder concrete in super high-rise structures, taking a super high-rise tubular structure with a height of 222.7m as an example, the common concrete of the columns and shear walls is replaced by reactive powder concrete, The self-weight, dynamic characteristics, lateral displacement, seismic performance and stability of the structure are compared and analyzed. The results show that the reactive powder concrete has higher toughness and strength. Under the premise of meeting the existing specifications, the self-weights of the reactive powder concrete frame column and the shear wall are respectively 54% and 50% lower than the original structure. The reactive powder concrete column Can substitute for steel reinforced concrete column; the section size of the reactive powder concrete shear wall is controlled by the rigidity and stability; the reactive powder concrete replaces the ordinary concrete can reduce the section of the component and increase the used area of the building, thus reducing the self-weight of the structure and reducing the earthquake action , To improve the seismic performance of the structure.