...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Seismic demand sensitivity of reinforced concrete shear-wall building using FOSM method
【24h】

Seismic demand sensitivity of reinforced concrete shear-wall building using FOSM method

机译：基于FOSM方法的钢筋混凝土剪力墙结构的地震需求敏感性。

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

The uncertainty in the seismic demand of a structure (referred to as the engineering demand parameter, EDP) needs to be properly characterized in performance-based earthquake engineering. Uncertainties in the ground motion and in structural properties are responsible for EDP uncertainty. In this study, sensitivity of EDPs to major uncertain variables is investigated using the first-order second-moment method for a case study building. This method is shown to be simple and efficient for estimating the sensitivity of seismic demand. The EDP uncertainty induced by each uncertain variable is used to determine which variables are most significant. Results show that the uncertainties in ground motion are more significant for global EDPs, namely peak roof acceleration and displacement, and maximum inter-storey drift ratio, than those in structural properties. Uncertainty in the intensity measure (IM) of ground motion is the dominant variable for uncertainties in local EDPs such as the curvature demand at critical cross-sections. Conditional sensitivity of global and local EDPs given IM is also estimated. It is observed that the combined effect of uncertainties in structural properties is more significant than uncertainty in ground motion profile at lower IM levels, while the opposite is true at higher IM levels.
机译：在基于性能的地震工程中，必须适当地表征结构的地震需求中的不确定性（称为工程需求参数，EDP）。地面运动和结构特性的不确定性是EDP不确定性的原因。在这项研究中，以一阶二阶矩法为例，研究了EDP对主要不确定变量的敏感性。结果表明，该方法对于估计地震需求的敏感性简单有效。由每个不确定变量引起的EDP不确定性用于确定哪些变量最重要。结果表明，对于整体EDP，地震动的不确定性比结构特性要大得多，即车顶加速和位移峰值以及最大层间漂移比。地面运动强度测量（IM）的不确定性是局部EDP不确定性（例如关键截面的曲率需求）不确定性的主要变量。还估计了给定即时消息时全球和本地EDP的条件敏感性。可以观察到，在较低的IM水平下，结构特性不确定性的综合影响要比在地面运动剖面中的不确定性更为显着，而在较高的IM水平下则相反。

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