形状记忆合金混凝土柱动力特性试验研究

崔迪;李宏男;宋钢兵

振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 150-154.

PDF(1848 KB)
PDF(1848 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 150-154.
论文

形状记忆合金混凝土柱动力特性试验研究

  • 崔迪1 ;李宏男2 ;宋钢兵3
作者信息 +

xperimental Study on the Dynamic Properties of SMA Reinforced Concrete Columns

  • CUI Di 1 ;LI Hong-nan 2; SONG Gang-bing 3
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摘要

()

为了考查形状记忆合金(SMA)对结构构件动力特性的影响,将不同状态的SMA丝埋入到混凝土柱中,制成SMA混凝土柱,采用初始位移法测出SMA混凝土柱的自由振动衰减曲线,得到各SMA混凝土柱的频率和阻尼比。试验包括自由振动测试和通电振动测试两部分。对试验结果进行比较分析可知, SMA所处状态对混凝土柱的阻尼比影响显著;SMA相变过程中产生的回复力对混凝土柱的频率的影响较大。因此,可以利用SMA来改变混凝土构件或结构的动力特性,以有效控制结构振动。

Abstract

The influence of shape memory alloys (SMAs) on the vibration performances of concrete columns were studied through initial displacement method. In this study, SMA reinforced concrete columns are fabricated by embedding SMA wires with different phases. The experiment includes two parts: one is the free vibration test; the other is the vibration test with current activation. The test results indicate that the state (or phase) of SMAs has evident influence on the damping ratio of the concrete columns. Moreover, the recovery force generated during the phase transformation has great influence on the frequency of the concrete columns. Therefore, SMAs can be utilized to change the dynamic properties of concrete members or structures to control the structural vibration effectively.

关键词

形状记忆合金 / 混凝土柱 / 动力特性 / 阻尼比 / 频率

Key words

shape memory alloy / concrete column / dynamic properties / damping ratio / frequency

引用本文

导出引用
崔迪;李宏男;宋钢兵. 形状记忆合金混凝土柱动力特性试验研究 [J]. 振动与冲击, 2010, 29(4): 150-154
CUI Di ;LI Hong-nan;SONG Gang-bing . xperimental Study on the Dynamic Properties of SMA Reinforced Concrete Columns[J]. Journal of Vibration and Shock, 2010, 29(4): 150-154

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