Research Progress on Vibration Isolation of Floating Slab Track Structure of Subway

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2012 11 31 11 Mechanical Science and Technology for Aerospace Engineering November Vol. 31 2012 No.

1 Mechanical Science and Technology for Aerospace Engineering November Vol No U231 A Research Progress on Vibration Isolation of Floating Slab Track Structure of Subway Li Rui Chen Kelong Feng Huizong He Limin College of Automation Chongqing University of Posts and Telecommunications Chongqing Abstract The excitation induced by the interactions of wheels and subway tracks was discussed. Also its models and applied methods were depicted. After the introducing of the principle of isolation for floating slab track FST and displaying of the structures of FST supported with elastomer and spring the models of FST including lumped parameter model continuous model and discrete model were demonstrated. Then the dynamic performance modal analysis and effectiveness of isolation for FST were showed. In order to solve the main isolation problems of FST the parameter optimization for stiffness and damping constant as well as the semi-active vibration isolation technology or active vibration isolation technology were considered to be the development trend. Key words subway track mount dynamics analysis vibration isolation CSTC2012jjA lirui - cqu@ 163. com

2 Jun Yuan 8 M. F. M Huseein 9 2 F x t = e iωt δ x - vt 1 δ F e ω x v t ~ 10 Hz 30 ~ 60 Hz 100 ~ 400 Hz 3 F t = P 0 + P 1 sin ω 1 t + P 2 sin ω 2 t + P 3 sin ω 3 t F P 0 P 1 P 2 P 3 3 ω 1 ω 2 ω ~

1762 31 1 1 16 Hz 12 Hz 20 db ~ 30 db 25 db ~ 40 db 15 3 16 Hz 20 db ~ 30 db 16 1 2 3 20 Hz 2.

3 Hz 12 Hz 20 db ~ 30 db 25 db ~ 40 db Hz 20 db ~ 30 db Hz Hz 25 db ~ 40 db 3 3 M 1 M 2 K 1 C 1 K 2 C Euler-Bernoulli K 1 K 2 C C 1

4 K 1 C m 槡 k / 4π 2 M 18 槡

5 / kg m ~ m 1 ~ 8 /m 1 ~ 7 15 /m 2. 4 ~ /m / MN m ~ 50 / MN m ~ 30 / N s m ~ m 62. 8% Z 10 db m M. F. M. Hussein Chen-Ming Kuo 28 80% 槡 ANSYS 32 T De-yun DING 11 7 Hz 9 Hz 25 db 9 Hz 3

6 Ford ~ Hz Sheng X Jones C J C Thompson D J. A theoretical study on the influence of the track on train-induced ground vibration J. 38 Journal of Sound and Vibration ~ J ~ D. ms Saurenman H Phillips J. In-service tests of the effectiveness of vibration control measurers on the BART rail transit system J Journal of Sound and Vibration ~ 900

7 Hunt H E M. Measures for reducing ground vibration generated by trains in tunnels J. Noise and Vibration from High- Speed Trains ~ Ca Y Q et al. Effects of the dynamic wheel-rail interaction on the ground vibration generated by a moving train J. Journal of Solids and Structures ~ J ~ ~ Yuan J Zhu Y C Wu M Z. Vibration characteristics and effectiveness of floating slab track system J. Journal of Computers ~ Hussein M F M Hunt H E M. Modelling of floating-slab tracks with continuous slabs under oscillating moving loads J. Journal of Sound and Vibration ~ J. 32. J ~ ~ Ding D Y Liu W N Li K F Sun X J Liu W F. Low frequency vibration tests on a floating slab track in an underground laboratory J. Journal of Zhejiang University-SCIENCE A Applied Physics & Engineering ~ J ~ 228 J ~ Lombaert G Degrande G Vanhauwere B Vandeborght B J ~ Francois S. The control of ground-borne vibrations from railway 14. traffic by means of continuous floating slabs J. Journal of J Sound and Vibration ~ J ~ J. 37. J ~ ~ J. 38 Kallio M Lindroos T Aalto S et al. Dynamic compression testing of a tunable spring element con-sisting of a magnetorheologi ~ Hussein M F M Hunt H E M. A numerical model for calculating cal elastomer J. Smart Materials and Structures vibration due to a harmonic moving load on a floating-slab track with discontinuous slabs in an underground railway tunnel J. Journal of Sound and Vibration ~ J ~ 953 J ~ Li R Chen W M Liao C R. Hierarchical fuzzy control for en- 20. gine isolation via magnetorheological fluid mounts J. Proceedings of the Institution of Mechanical Engineers Part J ~ 109 D Journal of Automobile Engineering ~ 187 J ~ Li R Chen W M Liao C R Dong X M. Fuzzy hybrid control of 22. vibration attitude of full car via magneto-rheological suspensions J. J ~ Yuan J et al. Low-frequency vibration isolation performance of floating slab track system A International Workshop on Modelling Simulation and Optimization C Li R Chen W M Liao C R Zhang H H. A hierarchical control- 24. ler for the vibration of an automo-tive suspension system via magnetorheological dampers J. Proceedings of the Institution of 25. J. Mechanical Engineers Part D Journal of Automobile Engi- J ~ ~ 64 neering ~ Yuan J Meng Z B Wu M Z Song L. Dispersive characteristics analysis and vibration isolation simulation of floating slab track system A International Workshop on Modelling Simulation and Optimization C J ~ Kuo C M Huang C H Chen Y Y. Vibration characteristics of floating slab track J. Journal of Sound and Vibration J ~ Gupta S Degrande G. Modelling of continuous and discontinuous floating slab tracks in a tunnel using a periodic approach J. Journal of Sound and Vibration ~ J ~ Hussein M F M Hunt H E M. An insertion loss model for evaluating the performance of floatin-slab track for underground rail way tunnels A. Tenth International Congress on Sound and Vibration C 2003 A C J ~ Chinese Journal of Mechanical Engineering J ~ J ~ 175

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