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高层建筑消能减震钢-混凝土组合剪力墙性能研究

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Keywords: 高层建筑,钢-混凝土组合剪力墙,消能减震,屈服机制,试验研究

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Abstract:

提出了两种消能减震钢-混凝土组合剪力墙,一种为工形截面钢管混凝土边框双钢板组合剪力墙,一种为带软钢板耗能键的钢管混凝土边框组合剪力墙。通过合理构造设计,将钢管混凝土、钢板、混凝土墙体组合,以实现强震作用下各组合部件屈服耗能、组合部件间界面区域耗能减震作用。进行了低周反复荷载下抗震性能试验研究,分析了破坏特征、承载力、延性、滞回特性、耗能。结果表明工形截面钢管混凝土边框双钢板组合剪力墙,充分发挥了腹板双钢板形成的交叉拉力带消能减震作用,滞回曲线饱满,耗能能力强;合理匹配翼缘与腹板强弱关系,是实现双钢板剪力墙延性耗能屈服机制的关键。带软钢板耗能键的钢管混凝土边框组合剪力墙,充分发挥了钢管混凝土、软钢板耗能键、混凝土墙体及其界面相互咬合与摩擦双重消能减震作用,实现了延性屈服机制。

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