...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of earthquake engineering >The role of site effects in the comparison between code provisions and the near field strong motion of the Emilia 2012 earthquakes
【24h】

The role of site effects in the comparison between code provisions and the near field strong motion of the Emilia 2012 earthquakes

机译：场地效应在规范规定与艾米利亚2012年地震的近场强运动比较中的作用

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

A damaging seismic sequence hit a wide area mainly located in the Emilia-Romagna region (Northern Italy) during 2012 with several events of local magnitude M_l ≥ 5, among which the M_l 5.9 May 20 and the M_l 5.8 May 29 were the main events. Thanks to the presence of a permanent accelerometric station very close to the epicentre and to the temporary installations performed in the aftermath of the first shock, a large number of strong motion recordings are available, on the basis of which, we compared the recorded signals with the values provided by the current Italian seismic regulations, and we observed several differences with respect to horizontal components when the simplified approach for site conditions (based on Vs30 classes) is used. On the contrary, when using the more accurate approach based on the local seismic response, we generally obtain a much better agreement, at least in the frequency range corresponding to a quarter wavelength comparable with the depth of the available subsoil data. Some unresolved questions still remain, such as the low frequency behaviour (<1Hz) that could be due either to complex propagation at depth larger than the one presently investigated or to near source effects, and the behaviour of vertical spectra whose recorded/code difference is too large to be explained with the information currently available.
机译：2012年期间，一次破坏性地震序列袭击了一个主要位于艾米利亚-罗马涅大区（意大利北部）的广阔区域，发生了几次局部震级M_1≥5的事件，其中M_1 5.9 5月20日和M_1 5.8 5月29日是主要事件。由于在震中附近有一个永久的加速度计站，并且在第一次震动后进行了临时安装，因此可以提供大量的强震动记录，在此基础上，我们将记录的信号与根据意大利现行地震法规提供的值，当使用简化的现场条件方法（基于Vs30类）时，我们观察到了水平分量的一些差异。相反，当使用基于局部地震响应的更准确的方法时，我们通常至少在与可利用的地下土壤数据的深度可比的四分之一波长对应的频率范围内获得更好的一致性。仍然存在一些未解决的问题，例如低频行为（<1Hz），这可能是由于深度大于当前研究的深处的复杂传播或近源效应，以及记录/代码差异为太大，无法用当前可用的信息进行解释。

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