Singular Function Models of a Simply Continuous Beam Bridge under a Moving Load

Article Preview

Abstract:

The system of a simply continuous beam was looked on as one span beam with several internal elastic supports of inexhaustible stiffness. There were two types of models such as the dynamic models by a moving concentrated force and by a moving mass. A three-span beam was introduced as example solved with the present model by a moving concentrated force and FEM, which verified that the present model was correct. Two cases of the example bridge by a moving concentrated force and by a moving mass were considered. The results indicate that mass of the moving load has little influence over the dynamic responses of the simply continuous beam bridge.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

2240-2243

Citation:

Online since:

October 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] H P Lee. Dynamic response of a beam with intermediate point constraints subjected to a moving load. Journal of sound and vibration, Vol. 171, No. 3 (1994), pp.361-368. Dj.M. Maric, P.F. Meier and S.K. Estreicher: Mater. Sci. Forum Vol. 83-87 (1992), p.119

DOI: 10.1006/jsvi.1994.1126

Google Scholar

[2] D Y Zheng, Y K Cheng, F T K Au et al . Vibration of multi-span non-uniform beama under moving loads by using modified beam vibration functions. Journal of Sound and Vibration, Vol. 212, No. 3 (1998), pp.455-467

DOI: 10.1006/jsvi.1997.1435

Google Scholar

[3] Y K Cheng, F T K Au, D Y Zheng et al. Vibration of multi-span non-span bridges under moving vehicles and trains by using modified beam vibration functions, Vol. 228, No. 3 (1999), pp.611-628.

DOI: 10.1006/jsvi.1999.2423

Google Scholar

[4] Ladislav Fryba. Vibration of solids and structures under moving loads( Noordhoff International, Groningen, 1972).

DOI: 10.1177/058310247400601213

Google Scholar

[5] Zhang Jun, Jiang Ke-bin, Zhu Guang-yuan. Vibration of elastic suppoted beam under moving loads. Engineer Equipment Research, Vol. 26, No. 4 (2007), pp.5-8 (In Chinese).

Google Scholar

[6] Zhang Jun,Liu Jun,Ni Xiao-lu et al. Dynamic model of a discrete-pontoon floating bridge subjected by moving loads, Applied Mechanics and Materials,Vol. 29-31 (2010), pp.732-737.

DOI: 10.4028/www.scientific.net/amm.29-32.732

Google Scholar

[7] Zhang Jun, Liu Jun, Xu Xiao-min. Two Numerical algorithms on dynamic response of simple supported beam under effect of moving mass. Engineer Equipment Research, Vol. 28, No. 2 (2009), pp.1-4 (In Chinese).

Google Scholar

[8] Li Guo-hao. Stability and Vibration of Bridge Structures (China Railway Publishing House, Beijing, 1996) (In Chinese).

Google Scholar