Structural Monitoring and Maintenance

  • 제5권1호
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  • Pages.111-127
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  • 2018
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  • 2288-6605(pISSN)
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  • 2288-6613(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Inclinometer-based method to monitor displacement of high-rise buildings

  • Xiong, Hai-Bei (Research Institute of Structural Engineering and Disaster Reduction, Tongji University) ;
  • Cao, Ji-Xing (Research Institute of Structural Engineering and Disaster Reduction, Tongji University) ;
  • Zhang, Feng-Liang (Research Institute of Structural Engineering and Disaster Reduction, Tongji University)
  • 투고 : 2017.11.22
  • 심사 : 2018.02.08
  • 발행 : 2018.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Horizontal displacement of high-rise building is an essential index for assessing the structural performance and safety. In this paper, a novel inclinometer-based method is proposed to address this issue and an algorithm based on three spline interpolation principle is presented to estimate the horizontal displacement of high-rise buildings. In this method, the whole structure is divided into different elements by different measured points. The story drift angle curve of each element is modeled as a three spline curve. The horizontal displacement can be estimated after integration of the story drift angle curve. A numerical example is designed to verify the proposed method and the result shows this method can effectively estimate the horizontal displacement with high accuracy. After that, this method is applied to a practical slender structure - Shanghai Tower. Nature frequencies identification and deformation monitoring are conducted from the signal of inclinometers. It is concluded that inclinometer-based technology can not only be used for spectrum analysis and modal identification, but also for monitoring deformation of the whole structure. This inclinometer-based technology provides a novel method for future structural health monitoring.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Japan Society for the Promotion of Science (JSPS)

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  1. Inclinometer-Based Long-Term Monitoring of the Headframe of Salt Mine Shaft vol.1945, pp.1, 2018, https://doi.org/10.1088/1742-6596/1945/1/012009