• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Large-scale field testing of geotechnical seismic isolation of structures using gravel-rubber mixtures
【24h】

Large-scale field testing of geotechnical seismic isolation of structures using gravel-rubber mixtures

机译：砾石橡胶混合物岩土地震隔离的大规模现场测试

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

We present the results of a large-scale experimental campaign performed on the prototype structure of EuroProteas in Thessaloniki, Greece, to assess the effectiveness of gravel-rubber mixture (GRM) layers underneath shallow foundations as a means of geotechnical seismic isolation (GSI). We found that the GSI of structures is optimized by increasing the rubber content of the soil-rubber mixture up to 30% per mixture weight. The effectiveness of the GSI systems has been investigated numerically and in small-scale experiments. This article seeks to fill the gap in the lack of full-scale experimental studies on this subject. Three soil pits were excavated and backfilled with GRM of different rubber content per weight to serve as foundation soil. A large number of instruments were installed on the structure, the foundation, the soil surface, and inside the GRM layers beneath the foundation to fully monitor the GSI-structure systems' response in three dimensions. The experimental investigation included ambient noise, free- and forced-vibration tests. Our results showed that a GSI layer composed of a GRM with 30% rubber content effectively isolates the structure. Even 0.5 m thickness (ie, B/6 of the foundation width) of the GSI system successfully cuts off practically all emitted waves at a (horizontal or vertical) distance of B/6 from the foundation. A significant reduction in the GSI-structure system's stiffness was apparent, leading to a rocking-dominant response. The rise in the system's damping and the substantial energy dissipation inside the GRM layer highlight its effectiveness as a GSI system.
机译：我们展示了在希腊塞洛尼基的Europroteas的原型结构上进行的大规模实验活动的结果，以评估浅层基础下面的砾石 - 橡胶混合物（GRM）层的有效性，作为岩土地震性分离（GSI）。我们发现通过将土壤 - 橡胶混合物的橡胶含量增加至每种混合物重量的30％，通过将结构GSI进行优化。 GSI系统的有效性已经在数值和小规模实验中进行了研究。本文旨在填补缺乏对该主题的全规模实验研究的差距。挖掘了三种土坑，并用各种橡胶含量的GRM填充，用作基础土壤。在基础之下的基础上安装了大量仪器，基础，土壤表面，以及GRM层内部的GRM层内，以完全监控三维GSI结构系统的响应。实验研究包括环境噪声，自由和强制振动测试。我们的结果表明，由具有30％橡胶含量的GRM组成的GSI层有效地隔离结构。甚至0.5米的厚度（即，基础宽度的B / 6）实际上成功地切断了B / 6的B / 6的所有发射波从基础的距离。 GSI结构系统的刚度显着降低是显而易见的，导致摇摆优势反应。系统阻尼的升高和GRM层内部的大量能量耗散突出了其作为GSI系统的有效性。

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