Analysis of vibration reduction effect of steel spring floating slab track with finite elements

Lei, Xiaoyan; Jiang, Chongda

doi:10.1177/1077546314539372

Cited by 51 publications

(23 citation statements)

References 10 publications

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“…15,[18][19][20][21][22][23][24] The existing studies reviewed above on FST were mainly based on numerical calculations, and a few based on field tests. The researches focus on the following aspects: 25 (1) The slab joint effect on the wheel-rail impact force;…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the vibration characteristics of the floating slab track in metro turnout zones

Jiang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part F:

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In railway turnout areas, vertical and horizontal structure irregularities, including geometry and stiffness, result in vibration amplification during the passage of trains. These vibrations can then spread to the surrounding environment. A steel spring floating slab track may be used to control such vibrations, especially in metro-type urban railways. An experimental study was conducted to investigate the vibration-mitigating effects of the floating slab track in turnout areas, and the results were compared with the performance of a regular slab track. Four test cases (consisting of six test sections) were selected: a floating slab track in the turnout zone (consisting of a switch rail section and a nose rail section), a floating slab track in the plain line, a slab track in the turnout zone (consisting of a switch rail section and a nose rail section), and a slab track in the plain line. The vibration characteristics of the floating slab track in the plain line and in the turnout were calculated to explain the test results. The test results indicate that when trains pass across the floating slab track in the turnout zone, the vertical vibration response is close to the horizontal response on the switch rail sections. The use of floating slab track can effectively reduce this vertical vibration. However, the vertical vibration response is much larger than the horizontal response on the nose rail sections of the turnout zone. When the floating slab track is used in these turnout zones, the vertical vibration of the rail decreases while the horizontal vibration increases. Compared to sections using the regular slab track in the turnout zone, the vibration of the floating slab track segments in the turnout zone is shown to be exacerbated, although the vibration level at the adjacent tunnel wall is effectively reduced.

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Section: Introductionmentioning

confidence: 99%

Experimental study of the vibration characteristics of the floating slab track in metro turnout zones

Jiang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part F:

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show abstract

“…e results showed that the stiffness and the damping of the isolator are the governing factors, whereas the stiffness and the damping of the rail pad are generally not important. Due to the large deflection from the isolator, this result may not be used to the cranes moving on the high-tech building [15]. Carrascal et al studied the influence of the sand on the dynamic behavior of the fastening system.…”

Section: Introductionmentioning

confidence: 99%

Vibration Induced by Moving Cranes in High‐Tech Buildings due to Rail Pad Materials

Kuo

2018

Shock and Vibration

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In this work, an appropriate rail pad is proposed to reduce the vibration induced by moving cranes near the source location in high-tech buildings. Using a simple two-degrees-of-freedom model and laboratory experiments, we found that a low-cost rubber pad is effective to reduce crane-induced vibration. A number of finite element analyses with the full model are then performed for a high-tech factory and a moving crane. The results show that a decrease in the stiffness of the rail pad can decrease crane-induced vibration, and it is obvious that the proposed low-stiffness rubber rail pad with significant damping is an appropriate material to reduce crane-induced vibration by as much as five dB. In addition, the displacement field using the rubber pad is still much smaller than 2 mm, which is the working requirement for moving cranes.

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“…the finite element method. Lei and Jiang [15] build the finite element model of the steel-spring floating-slab track to analyze the effectiveness of vibration reduction. Geng et al [16] constructed a 3D finite element model to analyze the normal models of the rubber floating-slab track.…”

Section: Introductionmentioning

confidence: 99%

Optimization of vibration reduction of the rubber floating-slab tracks

Jin¹,

Zhou²,

Liu³

2017

J. vibroeng.

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Abstract. The floating-slab track is one of the best methods to reduce the vibration from the underground railway. In this paper, the rubber floating-slab track was studied. The train-track model coupled with the track-tunnel-surrounding soil model was built, which was verified by the results of the in-site test. Through this model, the quality of the rubber floating-slab track was optimized by the multi-island genetic algorithm.

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Analysis of vibration reduction effect of steel spring floating slab track with finite elements

Cited by 51 publications

References 10 publications

Experimental study of the vibration characteristics of the floating slab track in metro turnout zones

Experimental study of the vibration characteristics of the floating slab track in metro turnout zones

Vibration Induced by Moving Cranes in High‐Tech Buildings due to Rail Pad Materials

Optimization of vibration reduction of the rubber floating-slab tracks

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