• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>3rd International Workshop on Structural Health Monitoring, Sep 12-14, 2001, Stanford University >GPS in Pioneering Dynamic Monitoring of Long-Period Structures
【24h】

GPS in Pioneering Dynamic Monitoring of Long-Period Structures

机译：GPS在长周期结构开拓性动态监测中的应用

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

Global Positioning System (GPS) technology with high sampling rates (～10 sps) allows scientifically justified and economically feasible dynamic measurements of relative displacements of long-period structures ― otherwise difficult to measure directly by other means, such as the most commonly used accelerometers that require post-processing including double integration. We describe an experiment whereby the displacement responses of a simulated tall building are measured clearly and accurately in real-time. We also describe successful, permanent deployment of GPS units at the roof of buildings in an urban environment. To the authors' best knowledge, this is the first, working, permanent and pioneering deployment of GPS units (in the world) for dynamic monitoring of long-period structures. Data recorded manually from such a deployment during a rather windy day is analyzed to determine the structural characteristics and applicable coherencies at identified frequencies. Such measurements can be used to assess average drift ratios and changes in dynamic characteristics, and therefore can be used by engineers and building owners or managers to assess the building performance during extreme motions caused by earthquakes and strong winds. By establishing threshold displacements or drift ratios and identifying changing dynamic characteristics, procedures can be developed to use such information to secure public safety and/or take steps to improve the performance of the building.
机译：具有高采样率（〜10 sps）的全球定位系统（GPS）技术可对长周期结构的相对位移进行科学合理且经济可行的动态测量-否则很难通过其他方式直接测量，例如最常用的加速度计需要后处理，包括双重集成。我们描述了一个实验，通过该实验可以实时准确，准确地测量模拟高层建筑的位移响应。我们还描述了在城市环境中建筑物屋顶成功，永久地部署GPS单元的情况。据作者所知，这是GPS设备（世界上）的首次，永久性和开创性部署，用于动态监测长周期结构。分析在相当大风天期间从这种部署手动记录的数据，以确定确定的频率下的结构特征和适用的相干性。此类测量可用于评估平均漂移率和动态特性的变化，因此，工程师和建筑物所有者或管理人员可使用这些测量来评估在地震和强风引起的极端运动期间的建筑性能。通过建立阈值位移或漂移比并识别变化的动态特性，可以开发出程序来使用此类信息来确保公共安全和/或采取措施来改善建筑物的性能。

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