Structural Engineering and Mechanics

  • 제14권2호
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  • Pages.151-170
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  • 2002
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Moving force identification from bending moment responses of bridge

  • Yu, Ling (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University) ;
  • Chan, Tommy H.T. (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University)
  • 투고 : 2001.02.05
  • 심사 : 2002.05.03
  • 발행 : 2002.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

Moving force identification is a very important inverse problem in structural dynamics. Most of the identification methods are eventually converted to a linear algebraic equation set. Different ways to solve the equation set may lead to solutions with completely different levels of accuracy. Based on the measured bending moment responses of the bridge made in laboratory, this paper presented the time domain method (TDM) and frequency-time domain method (FTDM) for identifying the two moving wheel loads of a vehicle moving across a bridge. Directly calculating pseudo-inverse (PI) matrix and using the singular value decomposition (SVD) technique are adopted as means for solving the over-determined system equation in the TDM and FTDM. The effects of bridge and vehicle parameters on the TDM and FTDM are also investigated. Assessment results show that the SVD technique can effectively improve identification accuracy when using the TDM and FTDM, particularly in the case of the FTDM. This improved accuracy makes the TDM and FTDM more feasible and acceptable as methods for moving force identification.

키워드

참고문헌

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피인용 문헌

  1. Moving force identification based on redundant concatenated dictionary and weighted l 1 -norm regularization vol.98, 2018, https://doi.org/10.1016/j.ymssp.2017.04.032
  2. Recent research on identification of moving loads on bridges vol.305, pp.1-2, 2007, https://doi.org/10.1016/j.jsv.2007.03.057
  3. Recent developments in inverse problems of vehicle–bridge interaction dynamics vol.6, pp.1, 2016, https://doi.org/10.1007/s13349-016-0155-x
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  7. Effectiveness of Vehicle Weight Estimation from Bridge Weigh-in-Motion vol.2009, 2009, https://doi.org/10.1155/2009/312034
  8. A MOM-based algorithm for moving force identification: Part II - Experiment and comparative studies vol.29, pp.2, 2008, https://doi.org/10.12989/sem.2008.29.2.155
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  13. A new iteration regularization method for dynamic load identification of stochastic structures vol.156, pp.None, 2002, https://doi.org/10.1016/j.ymssp.2020.107586