...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Feasibility of ambient vibration screening by periodic geofoam-filled trenches
【24h】

Feasibility of ambient vibration screening by periodic geofoam-filled trenches

机译：通过周期性填充土工泡沫的沟渠进行环境振动筛查的可行性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Single in-filled trench barriers have been widely investigated to mitigate ground vibrations. However, investigations on the application of multiple rows of in-filled trenches are very limited. This paper investigates the attenuation of surface waves by periodic geofoam-filled trenches in single-phased elastic soil deposits. First, a field test of train-induced ground vibration is carried out, from which the corresponding acceleration record and main frequency are obtained. Second, attenuation zones for surface waves in periodic geofoam-filled trenches are studied based on the periodic theory of solid-state physics. Finally, a numerical model for ambient vibration isolation is built under the conditions of plane strain, and the responses are performed both in frequency domain and in time domain by finite element method. The screening effectiveness of the proposed wave barrier is studied by conducting an extensive dimensionless parameter investigation. Results show that the proposed periodic geofoam-filled trenches can attenuate surface waves effectively, when the frequencies of surface waves are located in the attenuation zones. The present study provides a new concept for designing periodic in-filled trench barriers to mitigate ground vibrations.
机译：单个填充的沟槽式障碍已被广泛研究以减轻地面振动。但是，关于多行填充沟槽的应用的研究非常有限。本文研究了单相弹性土壤沉积物中周期性的泡沫填充沟槽对表面波的衰减作用。首先，对列车引起的地面振动进行现场测试，从中获得相应的加速度记录和主频率。其次，基于固态物理学的周期性理论，研究了周期性泡沫填充沟槽中表面波的衰减区域。最后，建立了平面应变条件下环境振动隔离的数值模型，并通过有限元方法在频域和时域中进行了响应。通过进行广泛的无量纲参数研究，研究了所提出的波屏障的屏蔽效果。结果表明，当表面波的频率位于衰减带中时，所提出的周期性泡沫填充沟槽可以有效地衰减表面波。本研究提供了一种新的概念，用于设计定期填充的沟槽屏障以减轻地面振动。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号