带SRC梁式转换层高层建筑的抗震性能研究与试验

Experiment and Study on Seismic Performance of High-rise Building with Transfer Story of SRC Beams

型钢混凝土(SRC)梁式转换结构是一种新的转换形式。在其运用到高层建筑中时,必须保证带这种转换层的高层建筑结构具有良好的抗震性能,为此进行了模型振动台试验,并结合Push-over弹塑性分析结果,对结构的振型、位移、加速度等动力反应和裂缝开展,以及型钢混凝土梁式转换层对高层建筑抗震性能的影响进行了分析。试验及分析表明:型钢混凝土梁式转换结构本身是“强梁弱柱”型,转换层与框架衔接层是强震作用下的薄弱点,同时,沿楼层抗侧刚度的突变仍是高层建筑动力反应和局部构件破坏的主要因素。

Transfer structure of solid reinforced concrete （SRC） beams is a new transfer type. The better structural seismic behaviors must be provided to the high-rise building with the transfer structure. The structural seismic response of mode shape, lateral displacement and acceleration, the development of the crack graph and the influence of the seismic behaviors of the SRC beams transfer story to high-rise building are studied by the shaking table test and the Push-over analysis. Experimental and theoretical datum are in good agreement and show that the transfer structure of SRC beams is the structural type of strength transfer beam to weak column, the connection between the transfer story of SRC beam and reinforced concrete frame is the weak parts of the high-rise building. And the sudden stiffness change along the height of the high-rise building is the main factors of the seismic response and local members Collapse of the structure.