Smart Structures and Systems

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Investigation of the SHM-oriented model and dynamic characteristics of a super-tall building

  • Xiong, Hai-Bei (Department of Disaster Mitigation for Structures, Tongji University) ;
  • Cao, Ji-Xing (Department of Disaster Mitigation for Structures, Tongji University) ;
  • Zhang, Feng-Liang (School of Civil and Environmental Engineering, Harbin Institute of Technology (HIT)) ;
  • Ou, Xiang (East China Region of Tahoe (Group) Co. Ltd.) ;
  • Chen, Chen-Jie (Shanghai Architectural Design & Research (Co., Ltd.))
  • Received : 2018.05.27
  • Accepted : 2018.11.14
  • Published : 2019.03.25
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Abstract

Shanghai Tower is a 632-meter super high-rise building located in an area with wind and active earthquake. A sophisticated structural health monitoring (SHM) system consisting of more than 400 sensors has been built to carry out a long-term monitoring for its operational safety. In this paper, a reduced-order model including 31 elements was generated from a full model of this super tall building. An iterative regularized matrix method was proposed to tune the system parameters, making the dynamic characteristic of the reduced-order model be consistent with those in the full model. The updating reduced-order model can be regarded as a benchmark model for further analysis. A long-term monitoring for structural dynamic characteristics of Shanghai Tower under different construction stages was also investigated. The identified results, including natural frequency and damping ratio, were discussed. Based on the data collected from the SHM system, the dynamic characteristics of the whole structure was investigated. Compared with the result of the finite element model, a good agreement can be observed. The result provides a valuable reference for examining the evolution of future dynamic characteristics of this super tall building.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Central Universities

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