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阻尼填充墙SBS层性能试验研究

DOI: 10.13197/j.eeev.2014.06.83.zhouy.011, PP. 83-89

Keywords: 阻尼填充墙,SBS层,力学性能,疲劳性能

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Abstract:

对阻尼填充墙的SBS层进行水平往复加载试验,研究了竖向压应力、加载频率和卷材层数对SBS层力学性能的影响及其耐疲劳性能.试验结果表明(1)SBS层工作性能稳定,滞回曲线饱满对称,SBS层产生黏滞滑移耗能,耗能性能良好.(2)竖向压应力、加载频率和卷材层数的变化对SBS层力学性能具有一定的影响;随着竖向压应力的增大,SBS层的早期抗剪切刚度显著增大,耗能性能小幅提升;SBS层具有速度相关性,加载频率增大时,SBS层的耗能性能明显提高;增大卷材层数会致使SBS层的剪切刚度和耗能效果降低.(3)疲劳试验中,SBS层的剪切刚度和耗能量有一定的衰减,但等效黏滞阻尼系数有所上升,滞回环形状基本不变,SBS层仍可有效耗能,耐疲劳性能良好.

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