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Optimal multi‐type sensor placement for monitoring high‐rise buildings under bidirectional long‐period ground motions
Structural Control and Health Monitoring ( IF 4.6 ) Pub Date : 2020-03-04 , DOI: 10.1002/stc.2541
Rong‐Pan Hu 1 , You‐Lin Xu 1 , Xin Zhao 2
Affiliation  

Towards a complete and accurate seismic assessment of a super high‐rise building under bidirectional long‐period ground motions, this study proposes an optimal multi‐type sensor placement framework for the best reconstruction of structural responses and ground motions based on a full‐scale 3D finite element (FE) model of the building. The selected locations and types of sensors are capable of not only capturing the coupled bending‐torsional vibration but also providing an unbiased estimation of the unmeasured responses of seismic‐vulnerable components and bidirectional ground motions. A Kalman filtering algorithm‐based data fusion technique is employed to deal with the measurement data from multi‐type sensors. With the target of achieving the best reconstruction, an optimal sensor placement (OSP) configuration, which minimizes the reconstruction error, is achieved through a sequential sensor placement algorithm. To assess the feasibility of the proposed OSP framework and the accuracy of reconstructed responses and ground motions, a numerical study is also performed on the full‐scale 3D FE model of a super high‐rise building. The torsional effects of the building under bidirectional long‐period ground motions are assessed by comparison with the results without considering the torsional effect. The numerical results show that the proposed framework is feasible and the reconstructed responses and ground motions are accurate and that the torsional effects cannot be neglected in the seismic assessment of the building.

中文翻译:

双向长时间地面运动下监视高层建筑的最佳多类型传感器放置

为了对超高层建筑在双向长周期地震动下进行完整而准确的地震评估,本研究提出了一种基于全尺寸3D的最佳多类型传感器放置框架,以最佳地重建结构响应和地震动建筑物的有限元(FE)模型。传感器的选定位置和类型不仅能够捕获耦合的弯曲扭转振动,而且还能够对易受地震影响的组件和双向地面运动的未测量响应进行无偏估计。基于卡尔曼滤波算法的数据融合技术用于处理来自多种类型传感器的测量数据。以实现最佳重建,优化传感器放置(OSP)配置为目标,通过顺序传感器放置算法可以最大程度地减少重建误差。为了评估拟议的OSP框架的可行性以及重建的响应和地震动的准确性,还对超高层建筑的全尺寸3D FE模型进行了数值研究。在不考虑扭转效应的情况下,通过与结果进行比较,可以评估建筑物在双向长时间地面震动下的扭转效应。数值结果表明,所提出的框架是可行的,重建的响应和地震动是准确的,并且在建筑物的地震评估中不能忽略扭转效应。为了评估拟议的OSP框架的可行性以及重建的响应和地震动的准确性,还对超高层建筑的全尺寸3D FE模型进行了数值研究。在不考虑扭转效应的情况下,通过与结果进行比较来评估建筑物在双向长期地面运动下的扭转效应。数值结果表明,所提出的框架是可行的,重建的响应和地震动是准确的,并且在建筑物的地震评估中不能忽略扭转效应。为了评估拟议的OSP框架的可行性以及重建的响应和地震动的准确性,还对超高层建筑的全尺寸3D FE模型进行了数值研究。在不考虑扭转效应的情况下,通过与结果进行比较来评估建筑物在双向长期地面运动下的扭转效应。数值结果表明,所提出的框架是可行的,重建的响应和地震动是准确的,并且在建筑物的地震评估中不能忽略扭转效应。在不考虑扭转效应的情况下,通过与结果进行比较,可以评估建筑物在双向长时间地面震动下的扭转效应。数值结果表明,所提出的框架是可行的,重建的响应和地震动是准确的,并且在建筑物的地震评估中不能忽略扭转效应。在不考虑扭转效应的情况下,通过与结果进行比较,可以评估建筑物在双向长时间地面震动下的扭转效应。数值结果表明,所提出的框架是可行的,重建的响应和地震动是准确的,并且在建筑物的地震评估中不能忽略扭转效应。
更新日期:2020-03-04
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