The MIT Green Building benchmark problem for structural health monitoring of tall buildings
The MIT Green Building benchmark problem for structural health monitoring of tall buildings
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DOI：
10.1002/stc.2115
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发表时间：
2018-03
影响因子：
5.4
通讯作者：
Hao Sun;O. Büyüköztürk
中科院分区：
文献类型：
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作者：
Hao Sun;O. Büyüköztürk
本文提出了高层建筑结构健康监测界研究的一个标杆问题。基准建筑被称为绿色建筑，位于麻省理工学院校园，地上21层（83.7米），地下室（3.8米）连接到麻省理工学院的隧道系统。该建筑由现浇钢筋混凝土建造，并配备了36个加速度计来测量建筑的平移、扭转和垂直响应。基准问题包括该建筑的详细描述，7个现场测量数据集（4个环境数据集，1个未知事件数据集，1个烟花激发数据集，1个地震数据集）和有限元模型（包括全尺寸模型和压缩模型）。绿色建筑具有可识别的土-结构相互作用行为，地基摇摆运动为建筑响应带来了重要的组成部分。为了解耦摇摆效应，本文讨论了楼层测量、凝结和摇摆响应的确定。最后采用盲源分离方法对振动模态特性进行辨识，并对振动分量进行量化。基准数据和模型向公众开放，用于算法开发和验证。
This paper presents a benchmark problem for the structural health monitoring community to study tall buildings. The benchmark building is called the Green Building located at the Massachusetts Institute of Technology campus, with 21 stories above the ground (83.7 m) and a basement (3.8 m) connecting to the Massachusetts Institute of Technology tunnel system. This building was constructed as cast‐in‐place reinforced concrete and instrumented with 36 accelerometers to measure the building translational, torsional and vertical responses. The benchmark problem includes the detailed description of this building, 7 field measurement data sets (4 ambient data sets, 1 data set under an unidentified event, 1 data set under the excitation of fireworks, and 1 earthquake data set), and finite element models (both full‐scale and condensed models). The Green Building has an identifiable soil‐structure interaction behavior and the base rocking movement brings significant components into the building response. To decouple the rocking effect, storey measurement condensation and rocking response determination are discussed in this paper. A blind source separation approach is finally applied to identify the modal characteristics and quantify the rocking components. The benchmark data and models are open to the public for algorithmic development and validation.