钢板剪力墙研究及工程应用

Research and engineering application of steel shear w all

对纯钢板剪力墙、内置钢板混凝土组合剪力墙、外包钢板混凝土组合剪力墙三类剪力墙进行综合研究,给出了3种钢板剪力墙特性及设计方法,同时中国建筑千米级摩天大楼为载体,对外包钢板混凝土组合剪力墙进行研究。研究表明:此3种钢板剪力墙结构延性好、耗能能力强,具有良好的抗震性能;纯钢板剪力墙结构非常适用高烈度区普通结构或350 m以下的超高层建筑;内置钢板混凝土组合剪力墙刚度大、强度高、延性好,可充分发挥混凝土和钢材2种材料的特性,但施工非常复杂;外包钢板混凝土组合剪力墙是一种新型剪力墙,对使用高强度、高性能混凝土和钢材没有限制,该种墙体更容易满足抗震性能化要求,且施工方便,工业化程度高;3种剪力墙均满足平截面假定,可采用纤维元的方法计算钢板混凝土组合剪力墙承载力。

The structural performance and design methods were put forward through the comprehensive study on the steel plate shear wall,internal steel plate concrete composite shear wall and the concrete-filled steel plate composite shear wall.Meanwhile,study was carried on the concrete-filled steel plate composite shear wall of the 1 180 meters high skyscraper of CSCEC.Results shows that all these three kinds of shear wall have characteristics of good ductility,high energy dissipation capacity and good seismic performance.The steel plate shear wall was very suitable for high intensity seismic region or super high-rise buildings under 350 m;built-in steel plate concrete composite shear wall has characteristics of high strength and stiffness,good ductility but with the complexity of construction and takes full advantages of the material behavior of concrete and steel.The concrete-filled steel plate composite shear wall was a new type of shear wall which has no limit use on the high-performance concrete and steel plate,characteristics of construction convenience and high level of industrialization,in addition,concrete-filled steel plate composite shear wall was easier to meet the requirements of performance-based seismic design.All these three kinds of shear wall satisfied the plane assumption,fiber element model could be used to calculate the bearing capacity of the steel plate concrete composite shear wall.