Structural Engineering and Mechanics

  • 제78권3호
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  • Pages.305-317
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  • 2021
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Model reduction techniques for high-rise buildings and its reduced-order controller with an improved BT method

  • Chen, Chao-Jun (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Teng, Jun (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Li, Zuo-Hua (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Wu, Qing-Gui (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Lin, Bei-Chun (School of Civil and Environmental Engineering, Harbin Institute of Technology)
  • 투고 : 2020.02.14
  • 심사 : 2021.02.28
  • 발행 : 2021.05.10
⟨ 이전 논문 다음 논문 ⟩

초록

An AMD control system is usually built based on the original model of a target building. As a result, the fact leads a large calculation workload exists. Therefore, the orders of a structural model should be reduced appropriately. Among various model-reduction methods, a suitable reduced-order model is important to high-rise buildings. Meanwhile, a partial structural information is discarded directly in the model-reduction process, which leads to the accuracy reduction of its controller design. In this paper, an optimal technique is selected through comparing several common model-reduction methods. Then, considering the dynamic characteristics of a high-rise building, an improved balanced truncation (BT) method is proposed for establishing its reduced-order model. The abandoned structural information, including natural frequencies, damping ratios and modal information of the original model, is reconsidered. Based on the improved reduced-order model, a new reduced-order controller is designed by a regional pole-placement method. A high-rise building with an AMD system is regarded as an example, in which the energy distribution, the control effects and the control parameters are used as the indexes to analyze the performance of the improved reduced-order controller. To verify its effectiveness, the proposed methodology is also applied to a four-storey experimental frame. The results demonstrate that the new controller has a stable control performance and a relatively short calculation time, which provides good potential for structural vibration control of high-rise buildings.

키워드

과제정보

The research described in this paper was financially supported by the Funds for Creative Research Groups of National Natural Science Foundation of China (Grant No. 51921006), the National Natural Science Foundations of China (Grant Nos. 51978224 and 52008141), the China Postdoctoral Science Foundation Grant (Grant No. 2019M651291), the Hong Kong Scholars Program (Grant No. XJ2019039), the National Major Scientific Research Instrument Development Program of China (Grant No. 51827811), and the Shenzhen Technology Innovation Programs (Grant Nos. JCYJ20170811160003571 and JCYJ20180508152238111). The authors declare that there is no conflict of interest regarding the publication of this paper.

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