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http://dx.doi.org/10.12989/sem.2013.46.3.353

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)
Publication Information
Structural Engineering and Mechanics / v.46, no.3, 2013 , pp. 353-370 More about this Journal
Abstract
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.
Keywords
bridge; moving vehicle; model updating; impact factor; vibration;
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  • Reference
1 BS 5400 (1978), Steel, concrete and composite bridges, Part 2. Specification for loads, British Standard Institution, London.
2 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.   DOI   ScienceOn
3 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.   DOI   ScienceOn
4 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.   DOI   ScienceOn
5 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.   DOI
6 American Association of state highway and transportation officials (AASHTO) (2002), Standard specifications for highway bridges, Washington DC.
7 American Association of State Highway and Transportation Officials (AASHTO) (2004), LRFD bridge design specifications, Washington DC.
8 Canadian Highway Bridge Design Code CSA International (Toronto) (2000), Ontario, Canada.
9 Chan, T.H.T. and O'Conner, C. (1990), "Vehicle model for highway bridge impact", Journal of Structural Engineering, 116, 1772-1796.   DOI
10 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.   DOI   ScienceOn
11 Green, M.F. and Cebon, D. (1997), "Dynamic interaction between heavy vehicles and highway bridges", Computers and Structures, 62(2), 253-264.   DOI   ScienceOn
12 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.
13 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   DOI   ScienceOn
14 Fryba, L. (1974), "Response of a beam to a rolling mass in the presence of adhesion", Acta Technica, 19(6), 673-687.
15 International Organization for Standardization (ISO) (1995), Mechanical vibration-road surface profiles-reporting of measured data, ISO 8068: (E), ISO, Geneva.
16 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.   DOI   ScienceOn
17 Lu, D. (2009), "System Identification of bridge and vehicle based on their coupled vibration", Ph.D. Dissertation, Louisiana State University, Baton Rouge, LA.
18 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
19 Wahab, M.M.A. (2001), "Effect of modal curvatures on damage detection using model updating", Mechanical Systems and Signal Processing, 15(2), 439-445.   DOI   ScienceOn
20 Wang, T.L., Huang, D.Z. and Shahawy, M. (1993), "Dynamic response of multi-girder bridges", Journal of Structural Engineering, 118(8), 2222-2238.
21 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.   DOI
22 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.   DOI   ScienceOn
23 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.   DOI