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http://dx.doi.org/10.12989/sem.2008.29.2.155

A MOM-based algorithm for moving force identification: Part II - Experiment and comparative studies  

Yu, Ling (Key Lab of Disaster Forecast and Control in Engineering, Ministry of Education of the People's Republic of China (Jinan University), Department of Civil and Structural Engineering, The Hong Kong Polytechnic University)
Chan, Tommy H.T. (School of Urban Development, Faculty of Built Environment & Engineering, Queensland University of Technology, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University)
Zhu, Jun-Hua (Key Lab of Disaster Forecast and Control in Engineering, Ministry of Education of the People's Republic of China (Jinan University), Changjiang River Scientific Research Institute)
Publication Information
Structural Engineering and Mechanics / v.29, no.2, 2008 , pp. 155-169 More about this Journal
Abstract
A MOM-based algorithm (MOMA) has been developed for moving force identification from dynamic responses of bridge in the companion paper. This paper further evaluates and investigates the properties of the developed MOMA by experiment in laboratory. A simply supported bridge model and a few vehicle models were designed and constructed in laboratory. A series of experiments have then been conducted for moving force identification. The bending moment and acceleration responses at several measurement stations of the bridge model are simultaneously measured when the model vehicle moves across the bridge deck at different speeds. In order to compare with the existing time domain method (TDM), the best method for moving force identification to date, a carefully comparative study scheme was planned and conducted, which includes considering the effect of a few main parameters, such as basis function terms, mode number involved in the identification calculation, measurement stations, executive CPU time, Nyquist fraction of digital filter, and two different solutions to the ill-posed system equation of moving force identification. It was observed that the MOMA has many good properties same as the TDM, but its CPU execution time is just less than one tenth of the TDM, which indicates an achievement in which the MOMA can be used directly for real-time analysis of moving force identification in field.
Keywords
moving force identification; method of moments (MOM); bridge loads; time domain method (TDM); dynamic responses;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 3  (Related Records In Web of Science)
Times Cited By SCOPUS : 4
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1 Hansen, P.C. (1992), "Analysis of discrete ill-posed problems by means of the L curve", SIAM Rev., 34, 561-580   DOI   ScienceOn
2 Hansen, P.C. and O'Leavy, D.P. (1993), "The use of the L curve in the regularization of discrete ill-posed problems", SIAM J. Sci. Comput. (USA), 14, 1487-1503   DOI   ScienceOn
3 Harris, H.G. and Sabnis, G.M. (2000), Structural Modeling and Experimental Techniques, CRC Press, New York
4 Law, S.S., Chan, T.H.T., Zhu, X.Q. and Zeng, Q.H. (2001), "Regularization in moving force identification", J. Eng. Mech., ASCE, 127(2), 136-148   DOI   ScienceOn
5 Law, S.S., Chanm T.H.T. and Zeng, Q.H. (1997), "Moving force identification: A time domain method", J. Sound Vib., 201(1), 1-22   DOI   ScienceOn
6 Bilello, C., Bergman, L.A. and Kuchma, D. (2004), "Experimental investigation of a small-scale bridge model under a moving mass", J. Struct. Eng., 130(5), 799-804   DOI   ScienceOn
7 Cantineni, R. (1992), "Dynamic behavior of highway bridges under the passage of heavy vehicles", Swiss Federal Laboratories for Materials Testing and Research (EMPA) Report No. 220, 240
8 Cebon, D. (1987), "Assessment of the dynamic wheel forces generated by heavy road vehicles", Symposium on Heavy Vehicle Suspension and Characteristics, Austrian Road Research Board
9 Chan, T.H.T. and O'Conner, C. (1990), "Wheel loads from highway bridge strains: Field studies", J. Struct. Eng., ASCE, 116(7), 1751-1771   DOI
10 Chan, T.H.T., Law, S.S. and Yung, T.H. (2000), "Moving force identification using an existing prestressed concrete bridge", Eng. Struct., 22, 1261-1270   DOI   ScienceOn
11 Santantamarina, J.C. and Fratta, D. (1998), "Introduction to discrete signals and inverse problems in civil engineering", ASCE, Reston. Va., 200-238
12 Tikhonov, A.N. and Arsenin, V.Y. (1977), Solution of Ill-posed Problems. Wiley. New York
13 Yu, L. (2002), "Accounting for bridge dynamic loads using moving force identification system (MFIS)", Ph.D. Thesis, The Hong Kong Polytechnic University, Hong Kong
14 Yu, L. and Chan, T.H.T. (2002), "Moving force identification from bending moment responses of bridge", Struct. Eng. Mech., 14(2), 151-170   DOI   ScienceOn
15 Yu, L. and Chan, T.H.T. (2003), "Moving force identification based on the frequency-time domain method", J. Sound Vib., 261, 329-349   DOI   ScienceOn
16 Yu, L. and Chan, T.H.T. (2005), "Moving force identification from bridge dynamic responses", Struct. Eng. Mech., 21(3), 369-374   DOI   ScienceOn
17 Proakis, G.J. and Manolakis, D.G. (1996), Digital Signal Processing, Principle, Algorithms and Applications, Prentice-Hall Inc
18 Busby, H.R. and Trujillo, D.M. (1997), "Optimal regularization of an inverse dynamic problem", Comput. Struct., 63(2), 243-248   DOI   ScienceOn
19 Chan, T.H.T., Yu, L. and Law, S.S. (2000), "Comparative studies on moving force identification from bridge strains in laboratory", J. Sound Vib., 235(1), 87-104   DOI   ScienceOn
20 Olsson, M. (1991), "On the fundamental moving load problem", J. Sound Vib., 145(2), 299-307   DOI   ScienceOn
21 Yu, L., Chan, T.H.T. and Zhu, J.H. (2008), "A MOM-based algorithm for moving force identification: Part I-theory and numerical simulation", Struct. Eng. Mech., 29(2), 135-154   DOI   ScienceOn