Structural Engineering and Mechanics

  • 제41권1호
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  • Pages.139-155
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  • 2012
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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

Time-dependent effects on dynamic properties of cable-stayed bridges

  • Au, Francis T.K. (Department of Civil Engineering, The University of Hong Kong) ;
  • Si, X.T. (Department of Civil Engineering, The University of Hong Kong)
  • 투고 : 2011.05.11
  • 심사 : 2011.12.13
  • 발행 : 2012.01.10
⟨ 이전 논문 다음 논문 ⟩

초록

Structural health monitoring systems are often installed on bridges to provide assessments of the need for structural maintenance and repair. Damage or deterioration may be detected by observation of changes in bridge characteristics evaluated from measured structural responses. However, construction materials such as concrete and steel cables exhibit certain time-dependent behaviour, which also results in changes in structural characteristics. If these are not accounted for properly, false alarms may arise. This paper proposes a systematic and efficient method to study the time-dependent effects on the dynamic properties of cable-stayed bridges. After establishing the finite element model of a cable-stayed bridge taking into account geometric nonlinearities and time-dependent behaviour, long-term time-dependent analysis is carried out by time integration. Then the dynamic properties of the bridge after a certain period can be obtained. The effects of time-dependent behaviour of construction materials on the dynamic properties of typical cable-stayed bridges are investigated in detail.

키워드

참고문헌

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피인용 문헌

  1. Creep and shrinkage effects in service stresses of concrete cable-stayed bridges vol.13, pp.4, 2014, https://doi.org/10.12989/cac.2014.13.4.483
  2. Capturing the long-term dynamic properties of concrete cable-stayed bridges vol.57, 2013, https://doi.org/10.1016/j.engstruct.2013.10.007
  3. Long-term structural analysis and stability assessment of three-pinned CFST arches accounting for geometric nonlinearity vol.20, pp.2, 2016, https://doi.org/10.12989/scs.2016.20.2.379
  4. An innovative approach for numerical simulation of stress relaxation of structural cables vol.131-132, 2017, https://doi.org/10.1016/j.ijmecsci.2017.08.011
  5. An algorithm for simulation of concrete cable-stayed bridges built on temporary supports and considering time dependent effects vol.79, 2014, https://doi.org/10.1016/j.engstruct.2014.08.018
  6. Some remarks on the influence of temperature-variations, non-linearities, repeatability and ageing on modal-analysis for structural health monitoring of real bridges vol.24, 2015, https://doi.org/10.1051/matecconf/20152405006
  7. A Study of Temperature and Aging Effects on Eigenfrequencies of Concrete Bridges for Health Monitoring vol.09, pp.05, 2017, https://doi.org/10.4236/eng.2017.95023
  8. Long-Term Deflection Monitoring for Bridges Using X and C-Band Time-Series SAR Interferometry vol.11, pp.11, 2019, https://doi.org/10.3390/rs11111258
  9. Performance of self-centering steel moment frame considering stress relaxation in prestressed cables vol.23, pp.9, 2012, https://doi.org/10.1177/1369433219900940
  10. Bridge flexural rigidity calculation using measured drive-by deflections vol.10, pp.5, 2020, https://doi.org/10.1007/s13349-020-00419-y