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Akhtar, Nasim
- Study of Steel Mass Spring System with Varying Speeds in a Tunnel
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Authors
Affiliations
1 Academy of Scientific and Innovative Research, Ghaziabad 201 002, IN
2 CSIR-Central Road Research Institute, New Delhi 110 025, IN
1 Academy of Scientific and Innovative Research, Ghaziabad 201 002, IN
2 CSIR-Central Road Research Institute, New Delhi 110 025, IN
Source
Current Science, Vol 121, No 11 (2021), Pagination: 1441-1451Abstract
A steel mass spring system (MSS) has been designed using the Zimmermann method. The impact of speed on the curve radius, cant, stiffness, static and dynamic deflection of the MSS is observed and the natural frequency of the system is calculated. It has been observed that the speed of the train affects the stiffness of MSS and therefore the insertion loss. As the speed of the train increases, the characteristic length of the floating slab track decreases due to which the spacing between MSS also changes. Hence this design of MSS will be effective.Keywords
Floating Slab Track, Mass Spring System, Natural Frequency, Tunnel, Vibration.Full Text
References
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Abstract Views :81 |
PDF Views:47
Authors
Affiliations
1 Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Road Research Institute, New Delhi 110 025, India., IN
1 Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Road Research Institute, New Delhi 110 025, India., IN
Source
Current Science, Vol 124, No 2 (2023), Pagination: 202-209Abstract
The vibration generated by underground trains and the level of vibration attenuated along the propagation path are the keys to designing mitigation measures to avoid adverse effects on the surroundings. The attenuation of vibrational energy due to geometrical and material damping was determined at the Civil Court Godown, Pune Metro, Maharashtra, India, up to 30 m. The seismic cross-hole test was used to determine the dynamic properties of the soil. It was found that the soil stratum was homogeneous and composed of basaltic rock. The total vibration level reaching the receiver was predicted for trains travelling at 80, 250 and 350 km/h, and vibration attenuation measures such as steel mass-spring systems and polyurethane mass-spring systems have been proposed.Keywords
Mass Spring Systems, Mitigation Measures, Seismic Velocity, Vibration Attenuation.Full Text
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