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钢管混凝土边框不同高厚比钢板剪力墙抗震性能
  • 期刊名称:北京工业大学学报
  • 时间:0
  • 页码:1059-1068
  • 语言:中文
  • 分类:TU375[建筑科学—结构工程]
  • 作者机构:[1]北京工业大学建筑工程学院,北京100124, [2]城市与工程安全减灾省部共建教育部重点实验室,北京100124
  • 相关基金:北京市科技重大项目(D08050603720000); 国家自然科学基金资助项目(50878007); 北京市高层次人才计划资助项目(PHR20100502)
  • 相关项目:钢管混凝土边框多重组合剪力墙结构抗震机理研究
中文摘要:

为了解钢管混凝土边框不同高厚比钢板剪力墙的抗震性能,进行了3个剪跨比为1.5的1/5缩尺的钢管混凝土边框钢板剪力墙的低周反复荷载试验.试件墙体钢板截面的高厚比分别为230、115、77.在试验基础上,对各试件的承载力、刚度、滞回特性、延性、耗能及破坏特征进行了分析,建立了该新型组合剪力墙的承载力计算模型,计算结果与实验结果符合较好.研究表明:墙体钢板高厚比较大的薄钢板剪力墙承载力较低,刚度较小,延性较好;墙体钢板高厚比较小的厚钢板剪力墙承载力较高,刚度较大,延性较差;墙体钢板高厚比适中的中厚钢板剪力墙承载力和刚度介于薄钢板墙和厚钢板墙之间,但其整体抗震耗能能力好.采用强钢管混凝土边框弱钢板的设计原则,可充分发挥该新型剪力墙2道抗震防线的作用.

英文摘要:

In order to know the seismic behavior,three 1 /5 scale specimens with the same shear span ratio 1. 5 but different ratio of height to sectional thickness of the steel-plate shear wall,which were 230,115 and 77 respectively,were tested under cyclic loading. Based on the experiment,the carrying capacity,stiffness, hysteresis characteristics, ductility, energy dissipation and damage characteristics of the specimens were analyzed. The mechanical model for calculating load-carrying capacity of the new style shear walls was proposed. And the calculating results agreed well with those from the experiments. It shows that the thinner steel-plate shear wall with higher ratio of height to sectional thickness has lower capacity,lower stiffness and better ductility,and vice versa. The load capacity and stiffness of the wall with moderate ratio of height to sectional thickness are in between of the thinner and the thicker walls. But the overall ability of its seismic energy dissipation is the best. It is suggested that the stronger concrete filled steel tube columns and weaker steel plate should be used in steel-plate shear walls in order to provide two earthquake fortification lines.

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