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BRIEF NOTES

System Identification Including the Load Environment

[+] Author and Article Information
Z. R. Lu, S. S. Law

Civil and Structural Engineering Department, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong

J. Appl. Mech 71(5), 739-741 (Nov 09, 2004) (3 pages) doi:10.1115/1.1778412 History: Received June 02, 2003; Revised January 21, 2004; Online November 09, 2004

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References

Normann, O. K., and Hopkins, R. C., 1952, “Weighing Vehicles in Motion,” Highway Research Board Bulletin 50, National Research Council, Washington, DC.
Morses,  F., 1984, “Weigh-in-Motion System Using Instrumented Bridge,” J. Transp. Eng. ASCE,105, pp. 233–249.
Davis, P., and Sommerville, F., 1986, “Low-Cost Axle Load Determination,” Proceedings of the 13th ARRB and 5th REAAA Combined Conference, Part 6, pp. 1703–1723.
Peters, R. J., 1986, “An Unmanned and Undetectable Highway Speed Vehicle Weighing System,” Proceedings of the 13th ARRB and 5th REAAA Combined Conference, Part 6, pp. 70–83.
Tritt, B., and Richards, B., 1978, “Determination of Vehicle Axle Mass Description and Demonstration of the ARRB System,” Proceedings of Axle Mass Determination Workshop, ARRB.
Zhu,  X. Q., and Law,  S. S., 1999, “Moving Loads Identification on a Multi-Span Continuous Bridge,” J. Sound Vib., 228, pp. 377–396.
Zhu,  X. Q., and Law,  S. S., 2001, “Orthogonal Function in Moving Loads Identification on a Multi-Span Bridge,” J. Sound Vib., 245, pp. 329–345.
Law,  S. S., and Zhu,  X. Q., 2000, “Study on Different Beam Models in Moving Load Identification,” J. Sound Vib., 234, pp. 661–679.
Abraham,  M. A., Park,  S. Y., and Stubbs,  N., 1995, “Loss of Prestress Prediction on Nondestructive Damage Location Algorithms,” SPIE Smart Struct. Mater.,2446, pp. 60–67.
Newmark,  N. W., 1959, “A Method of Computation for Structural Dynamics,” J. Eng. Mech., 85(3), pp. 67–94.
Tikhonov,  A. M., 1963, “On the Solution of Ill-Posed Problems and the Method of Regularization,” Sov. Math.,4, pp. 1035–1038.

Figures

Grahic Jump Location
A simply supported prestressed beam under Np moving loads
Grahic Jump Location
Identification of single moving force and prestress force (— true, . . . 5% noise, - - - 10% noise)
Grahic Jump Location
Identification of two moving forces, prestress force and flexural rigidity of a beam (— true, - - - identified)

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