Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of Ballastless and Ballasted Track for High-Speed Train
https://orcid.org/http://orcid.org/0000-0002-5304-9508
https://orcid.org/http://orcid.org/0000-0002-5650-5484
To cope with the demand of an increasing population and to modernize existing railway facilities, Indian Government has started the construction of a high-speed rail between Mumbai and Ahmedabad. Thus, the present paper deals with studying an impact of high-speed train on railway bridges for ballastless and ballasted track. A train has been modeled as the multi-body system, having only vertical degrees of freedom. Both the track system is modeled using finite element method in which rail, slab, and bridge are represented as 2D beam element while rail pads as spring and damper elements. The track irregularity is considered as a major source of vibration and is obtained using the grade six power spectral density curve provided by the Federal Railroad Administration of America (FRA) and is further normalized to keep the irregularity within a permissible limit. A non-linear Hertzian contact theory is used to the study the wheel rail contact mechanism. The dynamic train and track coupled equation are solved using suitable numerical techniques, and since non-linearity is involved, so a further convergence criteria is applied to solve a dynamic equations. It was found that ballasted track is more effective in reducing bridge vibrations compared to ballastless track.
Comparison of Ballastless and Ballasted Track for High-Speed Train
https://orcid.org/http://orcid.org/0000-0002-5304-9508
https://orcid.org/http://orcid.org/0000-0002-5650-5484
To cope with the demand of an increasing population and to modernize existing railway facilities, Indian Government has started the construction of a high-speed rail between Mumbai and Ahmedabad. Thus, the present paper deals with studying an impact of high-speed train on railway bridges for ballastless and ballasted track. A train has been modeled as the multi-body system, having only vertical degrees of freedom. Both the track system is modeled using finite element method in which rail, slab, and bridge are represented as 2D beam element while rail pads as spring and damper elements. The track irregularity is considered as a major source of vibration and is obtained using the grade six power spectral density curve provided by the Federal Railroad Administration of America (FRA) and is further normalized to keep the irregularity within a permissible limit. A non-linear Hertzian contact theory is used to the study the wheel rail contact mechanism. The dynamic train and track coupled equation are solved using suitable numerical techniques, and since non-linearity is involved, so a further convergence criteria is applied to solve a dynamic equations. It was found that ballasted track is more effective in reducing bridge vibrations compared to ballastless track.
Comparison of Ballastless and Ballasted Track for High-Speed Train
https://orcid.org/http://orcid.org/0000-0002-5304-9508
https://orcid.org/http://orcid.org/0000-0002-5650-5484
To cope with the demand of an increasing population and to modernize existing railway facilities, Indian Government has started the construction of a high-speed rail between Mumbai and Ahmedabad. Thus, the present paper deals with studying an impact of high-speed train on railway bridges for ballastless and ballasted track. A train has been modeled as the multi-body system, having only vertical degrees of freedom. Both the track system is modeled using finite element method in which rail, slab, and bridge are represented as 2D beam element while rail pads as spring and damper elements. The track irregularity is considered as a major source of vibration and is obtained using the grade six power spectral density curve provided by the Federal Railroad Administration of America (FRA) and is further normalized to keep the irregularity within a permissible limit. A non-linear Hertzian contact theory is used to the study the wheel rail contact mechanism. The dynamic train and track coupled equation are solved using suitable numerical techniques, and since non-linearity is involved, so a further convergence criteria is applied to solve a dynamic equations. It was found that ballasted track is more effective in reducing bridge vibrations compared to ballastless track.
Comparison of Ballastless and Ballasted Track for High-Speed Train
Lecture Notes in Civil Engineering
Sitharam, T. G. (Herausgeber:in) / Kolathayar, Sreevalsa (Herausgeber:in) / Sharma, Mukat Lal (Herausgeber:in) / Kedia, Naveen Kumar (Autor:in) / Kumar, Anil (Autor:in) / Singh, Yogendra (Autor:in)
23.03.2021
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Stiffness Optimization for Ballasted-Ballastless Track Transition Zones in High-Speed Railways
| Springer Verlag | 2024
| BASE | 2018
| British Library Conference Proceedings | 2009