...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of earthquake engineering >Seismic site effects in the Red Zone of Amatrice hill detected via the mutual sustainment of experimental and computational approaches
【24h】

Seismic site effects in the Red Zone of Amatrice hill detected via the mutual sustainment of experimental and computational approaches

机译：通过实验和计算方法的相互维持检测到Amatrice Hill红色区域的地震位点效应

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

This paper presents the results of numerical analyses of ground motion in the Red Zone sector of Amatrice hill, violently struck by the 2016-2017 Central Italy seismic sequence. The methodologies used in processing the data to define the numerical model are firstly described. The results obtained from the computational analyses are then presented and discussed by comparing them with experimental data set of weak motion recordings. Computational analyses were performed via both a 2D-numerical FEM model and a pseudo-three-dimensional hybrid model (SiSeRHMap) which develops multispectral maps taking into account topographic effects. Starting from available geological data and geophysical measurements, an original and specific subsoil GIS model was developed and utilised to perform the computational analyses. The preliminary map for fundamental periods computed from the subsoil model is in good agreement with the experimental data. A restricted set of weak ground motions acquired from an accelerometric station located in a reference site was used as input for the numerical analyses, while the signals of the corresponding events recorded at the top of the hill were used as targets in the reliability evaluation analysis of the outputs. In the area of Amatrice hill, which is characterized by a complex geological and topographical context, the reliability analysis shows a good performance of the hybrid model compared to the 2D-FEM model in the prediction of seismic response. Agreement generally was also good with regards to the experimental and computational results, both in relation to the amplitude and to the shape of the spectral amplification that change depending on the hill sector. Considering the predictive reliability of the models, a high amplification, due to topographic effects, was observed for the Red Zone by performing a back-simulation of the 24th August 2016 main shock. The analysis results highlight also that the maximum amplification factors, based on the definition of the Housner intensity, occur in the interval of periods 0-0.5 s covering the fundamental period range of the buildings in this area.
机译：本文介绍了2016-2017中央地震序列剧烈袭击了Amatrice Hill的红地区地面行业的数值分析的结果。首先描述用于处理数据以定义数值模型的方法。然后通过将它们与实验数据集进行比较，介绍和讨论从计算分析获得的结果。通过2D-Numerical FEM模型和伪三维混合模型（Siserhmap）进行计算分析，其考虑到地形效果。从可用的地质数据和地球物理测量开始，开发并利用了原始和特定的底体GIS模型来执行计算分析。从子机模型计算的基本时段的初步映射与实验数据很好。从位于参考网站中的加速度站获取的限制一组弱接地运动被用作数值分析的输入，而在山顶顶部记录的相应事件的信号被用作可靠性评估分析中的目标输出。在Amatrice Hill的区域，其特征在于复杂的地质和地形背景，可靠性分析显示了与2D-FEM模型在预测地震反应中相比的良好性能。同意对实验和计算结果普遍也善于良好，无论是关于幅度还是根据山扇区改变的光谱放大的形状。考虑到模型的预测可靠性，通过在2016年8月24日主要休克的反模拟中，为红色区域观察到由于地形效应的高扩增。分析结果突出显示，基于租户强度的定义的最大放大因子在覆盖该地区建筑物的基本周期范围的时间间隔0-0.5秒。

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