Structural Engineering and Mechanics

  • 제46권3호
  • /
  • Pages.353-370
  • /
  • 2013
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Impact factors of an old bridge under moving vehicular loads

  • Liu, Yang (School of Civil Engineering and Architecture, Changsha University of Science & Technology) ;
  • Yin, Xinfeng (School of Civil Engineering and Architecture, Changsha University of Science & Technology) ;
  • Zhang, Jianren (School of Civil Engineering and Architecture, Changsha University of Science & Technology) ;
  • Cai, C.S. (School of Civil Engineering and Architecture, Changsha University of Science & Technology)
  • 투고 : 2012.08.12
  • 심사 : 2013.04.09
  • 발행 : 2013.05.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a new method to study the impact factor of an old bridge based on the model updating technique. Using the genetic algorithm (GA) by minimizing an objective function of the residuals between the measured and predicted responses, the bridge and vehicle coupled vibration models were updated. Based on the displacement relationship and the interaction force relationship at the contact patches, the vehicle-bridge coupled system can be established by combining the equations of motion of both the bridge and vehicles. The simulated results show that the present method can simulate precisely the response of the tested bridge; compared with the other bridge codes, the impact factor specified by the bridge code of AASHTO (LRFD) is the most conservative one, and the value of Chinese highway bridge design code (CHBDC) is the lowest; for the large majority of old bridges whose road surface conditions have deteriorated, calculating the impact factor with the bridge codes cannot ensure the reliable results.

키워드

참고문헌

  1. Abdessemed, M., Kenai, S., Bali, A. and Kibboua, A. (2011), "Dynamic analysis of a bridge repaired by CFRP: Experimental and numerical modeling", Construction and Building Materials, 25, 1270-1276. https://doi.org/10.1016/j.conbuildmat.2010.09.025
  2. Aluri, S., Jinka, C., Hota, V.S. and Rao. G. (2005), "Dynamic response of three fiber reinforced polymer composite bridges", Journal of Bridge Engineering, 10(6), 722-730. https://doi.org/10.1061/(ASCE)1084-0702(2005)10:6(722)
  3. American Association of state highway and transportation officials (AASHTO) (2002), Standard specifications for highway bridges, Washington DC.
  4. American Association of State Highway and Transportation Officials (AASHTO) (2004), LRFD bridge design specifications, Washington DC.
  5. BS 5400 (1978), Steel, concrete and composite bridges, Part 2. Specification for loads, British Standard Institution, London.
  6. Canadian Highway Bridge Design Code CSA International (Toronto) (2000), Ontario, Canada.
  7. Chan, T.H.T. and O'Conner, C. (1990), "Vehicle model for highway bridge impact", Journal of Structural Engineering, 116, 1772-1796. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:7(1772)
  8. Chen, S.R. and Cai, C.S. (2004), "Accident assessment of vehicles on long-span bridges in windy environments", Journal of Wind Engineering and Industrial Aerodynamics, 92, 991-1024. https://doi.org/10.1016/j.jweia.2004.06.002
  9. Chinese highway bridge code (2004), Standard of the people's republic of china quality standard-JTG D60, China general code for design of highway bridges and culverts.
  10. Czaderski, C. and Motavalli, M. (2007), "40-Year-old full-scale concrete bridge girder strengthened with pre-stressed CFRP plates anchored using gradient method", Composites Part B: Engineering, 38, 878-886. https://doi.org/10.1016/j.compositesb.2006.11.003
  11. Demeke, B.A., Chan, T.H.T. and Yu, L. (2007), "Evaluation of dynamic loads on a skew box girder continuous bridge Part II: Parametric study and dynamic load factor", Engineering Structures, 29, 1064-1073 https://doi.org/10.1016/j.engstruct.2006.07.013
  12. Fryba, L. (1974), "Response of a beam to a rolling mass in the presence of adhesion", Acta Technica, 19(6), 673-687.
  13. Green, M.F. and Cebon, D. (1997), "Dynamic interaction between heavy vehicles and highway bridges", Computers and Structures, 62(2), 253-264. https://doi.org/10.1016/S0045-7949(96)00198-8
  14. International Organization for Standardization (ISO) (1995), Mechanical vibration-road surface profiles-reporting of measured data, ISO 8068: (E), ISO, Geneva.
  15. Law, S.S. and Zhu, X.Q. (2005), "Bridge dynamic responses due to road surface roughness and braking of vehicle", Journal of Sound Vibration, 282(5), 805-830. https://doi.org/10.1016/j.jsv.2004.03.032
  16. Lu, D. (2009), "System Identification of bridge and vehicle based on their coupled vibration", Ph.D. Dissertation, Louisiana State University, Baton Rouge, LA.
  17. Lu, D. and Cai, C.S. (2010), "Bridge model updating using response surface method and genetic algorithm", Journal of Bridge Engineering, 5(15), 553-564
  18. Wahab, M.M.A. (2001), "Effect of modal curvatures on damage detection using model updating", Mechanical Systems and Signal Processing, 15(2), 439-445. https://doi.org/10.1006/mssp.2000.1340
  19. Wang, T.L., Huang, D.Z. and Shahawy, M. (1993), "Dynamic response of multi-girder bridges", Journal of Structural Engineering, 118(8), 2222-2238.
  20. Yu, L. and Chan, T.H. (2007), "Recent research on identification of moving loads on bridges", Journal of Sound and Vibration, 305(1-2), 3-21. https://doi.org/10.1016/j.jsv.2007.03.057
  21. Yin, X.F., Cai, C.S., Fang, Z. and Deng, L. (2010), "Bridge vibration under vehicular loads - tire patch contact versus point contact", International Journal of Structural Stability and Dynamics, 10(3), 529-554. https://doi.org/10.1142/S0219455410003609
  22. Yin, X.F., Fang, Z. and Cai, C.S. (2011), "Lateral vibration of high-pier bridges under moving vehicular loads", Journal of Bridge Engineering, 16(3), 400-412. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000170
  23. Zhang, Y., Cai, C.S. and Shi, X.M. (2006), "Vehicle induced dynamic performance of a FRP versus concrete slab bridge", ASCE Journal of Bridge Engineering, 11(4), 410-419. https://doi.org/10.1061/(ASCE)1084-0702(2006)11:4(410)