...
  • 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 >Empirical models for estimating liquefaction-induced lateral spread displacement
【24h】

Empirical models for estimating liquefaction-induced lateral spread displacement

机译：估算液化引起的横向扩展位移的经验模型

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

Existing empirical models for estimating liquefaction-induced lateral spread displacement (D_(LL)) have been derived from a dataset poorly distributed with respect to earthquake magnitude and source distance, and also produced from different tectonic source types and faulting mechanisms. Both the poor distribution and mixed tectonic source types and faulting mechanisms of the data have an adverse impact on the reliability of the empirical models. To overcome these problems in the development of empirical models, we replace the direct use of magnitude and source distance with pseudo-displacement derived from spectral acceleration attenuation models that are well supported by earthquake data, and use a modification factor to account for effects of the non-linear soil response. Attenuation models derived from very large and reasonably well-balanced datasets have been selected, one being a Japanese attenuation model and other being a combination of the Sadigh et al. model and the Youngs et al. model. These models are capable of accounting for the effects of earthquake tectonic source type and faulting mechanism. We determined the model coefficients by selecting the pseudo-displacements calculated for a number of spectral periods to achieve an unbiased distribution of residuals with respect to earthquake magnitude and source distance. Sensitivity analyses have been carried out based on the new and existing models, and show that the new model is more robust than the existing models. Comparison with a limited number of data from the 1997 Kocaeli, Turkey earthquake suggests our model provides comparable liquefaction-induced lateral displacement D_(LL) estimates.
机译：现有的经验模型用于估算液化引起的横向扩展位移（D_（LL）），是从关于地震震级和震源距离分布不均的数据集中得出的，也来自不同的构造震源类型和断层机制。不良的分布和混合的构造源类型以及数据的断层机制都对经验模型的可靠性产生不利影响。为了克服经验模型开发中的这些问题，我们将震级和震源距离的直接使用替换为由地震加速度数据很好地支持的频谱加速度衰减模型得出的伪位移，并使用修正因子来说明地震波的影响。非线性土壤响应。选择了从非常大且合理平衡的数据集中得出的衰减模型，一个是日本衰减模型，另一个是Sadigh等人的组合。模型和杨斯等。模型。这些模型能够解释地震构造源类型和断裂机制的影响。我们通过选择针对多个频谱周期计算的伪位移来确定模型系数，以实现相对于地震震级和震源距离的残差的无偏分布。已基于新模型和现有模型进行了灵敏度分析，结果表明，新模型比现有模型更健壮。与1997年土耳其科贾埃利地震的少量数据进行比较后，我们的模型提供了可比的液化引起的横向位移D_（LL）估计值。

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