带SRC梁式转换层高层建筑的抗震性能研究与试验
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摘要
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.
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.
引文
[1]薛建阳,赵鸿铁.型钢钢筋混凝土框架振动台试验及弹塑性动力分析[J].土木工程学报,2000,(4):30~33
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[3]汪大绥,贺军利,张凤新.静力弹塑性分析(PushoverAnalysis)的基本原理和计算实例[J].世界地震工程,2004,20(1):45~50
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[5]李康宁,洪亮,叶献国.结构三维弹塑性分析方法及其在建筑物震害研究中的应用[J].建筑结构,2001,(3):53~55
[6]刘劲松.带高位大跨度转换层结构抗震性能研究[D].浙江大学博士学位论文,2004
[7]杜宏彪,沈聚敏.空间钢筋混凝土框架结构模型的振动台试验研究[J].建筑结构学报,1995,16(1):60~68
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