...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Modified three-dimensional seismic assessment method for buildings based on ambient vibration tests: extrapolation to higher shaking levels and measuring the dynamic amplification portion of natural torsion
【24h】

Modified three-dimensional seismic assessment method for buildings based on ambient vibration tests: extrapolation to higher shaking levels and measuring the dynamic amplification portion of natural torsion

机译：改进的基于环境振动测试的建筑物三维地震评估方法：外推至更高的振动水平并测量自然扭转的动态放大部分

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 applications of the modified 3D-SAM approach, a three-dimensional seismic assessment methodology for buildings directly based on in situ experimental modal tests to calculate global seismic demands and the dynamic amplification portion of natural torsion. Considering that the building modal properties change from weak to strong motion levels, appropriate modification factors are proposed to extend the application of the method to stronger earthquakes. The proposed approach is consistent with the performance-based seismic assessment approach, which entails the prediction of seismic displacements and drift ratios that are related to the damage condition and therefore the functionality of the building. The modified 3D-SAM is especially practical for structures that are expected to experience slight to moderate damage levels and in particular for post-disaster buildings that are expected to remain functional after an earthquake. In the last section of this paper, 16 low to mid-rise irregular buildings located in Montreal, Canada, and that have been tested under ambient vibrations are analyzed with the method, and the dynamic amplification portion of natural torsion of the dataset is reported and discussed. The proposed methodology is appropriate for large-scale assessments of existing buildings and is applicable to any seismic region of the world. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译：本文介绍了改进的3D-SAM方法的应用，这是一种直接基于原位实验模态测试来计算整体地震需求和自然扭转动态放大率的三维地震评估方法。考虑到建筑物的模态性质从弱到强变化，提出了适当的修正因子，以将方法推广到强震中。所提出的方法与基于性能的地震评估方法相一致，后者需要预测与破坏条件以及建筑物功能相关的地震位移和漂移率。修改后的3D-SAM特别适用于预计遭受轻度至中度损坏程度的结构，特别是对于预计在地震后仍能正常工作的灾后建筑物。在本文的最后部分中，使用该方法分析了位于加拿大蒙特利尔的16座低层至中层不规则建筑物，这些建筑物已在环境振动下进行了测试，并报告了数据集自然扭转的动态放大部分，并讨论过。所提出的方法适用于对现有建筑物的大规模评估，并且适用于世界上任何地震区域。版权所有（c）2016 John Wiley＆Sons，Ltd.

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