期刊
JOURNAL OF EARTHQUAKE ENGINEERING
卷 26, 期 14, 页码 7170-7193出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/13632469.2021.1961933
关键词
Wave propagation; seismic apparatus set-up; geotechnical seismic isolation; polyurethane foams; impact tests
The experimental results showed that polyurethane can mitigate wave propagation, affecting seismic isolation, and accelerations in composite samples decrease with increasing polyurethane content. The parametric analysis based on a theoretical model indicated that the proposed isolation method is efficient.
This paper shows the experimental results of impact hammer tests conducted on sand and composite sand-polyurethane samples at different confining pressures. It was found that polyurethane can mitigate the propagation of waves generated by an impact, thereby influencing seismic isolation. Also, accelerations in the composite samples were reduced in relation to the percentage of polyurethane present. A theoretical lumped-mass model (calibrated based on the experimental results) interpreted the experimental results and enabled an in-depth parametric analysis. This analysis shows that the proposed isolation method is efficient, as the damping coefficient of the polyurethane and the soil/polyurethane impedance ratio increased.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据