...
  • 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 >An identification procedure of soil profile characteristics from two free field acclerometer records
【24h】

An identification procedure of soil profile characteristics from two free field acclerometer records

机译：基于两个自由场加速度计记录的土壤剖面特征识别程序

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, an analytical, numerical and experimental approach for identifying soil profile characteristics by using system identification and free field records, is presented. First, a theoretical soil amplification function for two sites is defined and expressed in terms of the different parameters of the layers constituting the soil profiles (thickness, damping ratio, shear wave velocity and unit weight). Then, this function is smoothed with an analogous function obtained from experimental data by using the least squares minimization technique. The identification of the parameters is performed by solving, numerically, a non-linear optimisation problem. To demonstrate the numerical efficiency and the validity of this approach, two examples are treated. The first one consists in the identification of characteristics of a given uniform soil layer. The second example consists in the experimental validation of this approach with the data recorded within the Garner Valley Down Hole Array (GVDA). Finally, this approach is applied to identify, simultaneously, soil profile characteristics of sites from only a single soil acceleration record at free surface of each site. This procedure is utilised to identify soil profile characteristics of sites by using strong ground motions data recorded during the recent Boumerdes earthquake of May 21, 2003.
机译：本文提出了一种通过系统识别和自由场记录来识别土壤剖面特征的分析，数值和实验方法。首先，定义了两个站点的理论土壤放大函数，并根据构成土壤剖面的各层的不同参数（厚度，阻尼比，剪切波速度和单位重量）表示。然后，使用从最小二乘最小化技术从实验数据获得的类似函数对函数进行平滑处理。通过数字地解决非线性优化问题来执行参数的识别。为了证明这种方法的数值效率和有效性，我们处理了两个例子。第一个是确定给定均匀土壤层的特征。第二个例子是使用记录在Garner Valley井下阵列（GVDA）中的数据对该方法进行实验验证。最后，该方法可同时从每个站点的自由表面上的单个土壤加速度记录中识别站点的土壤剖面特征。通过使用在2003年5月21日的最近的Boumerdes地震中记录的强地面运动数据，此过程可用于识别场地的土壤剖面特征。

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