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- Title
Study on Dynamic Performance of Train in Curve Section with Minimum Curve Radius for High-speed Railway with Design Speed of 400 km/h.
- Authors
ZANG Chuanzhen
- Abstract
To study the dynamic response characteristics of the trains with design speed of 400 km/h passing through the curve section with minimum curve radius, a CRH380B vehicle-track coupling dynamics model in the curve section was established. By comparing the simulation data and the measured data obtained through comprehensive inspection train, from both time and frequency domains, the correctness of the simulation model was verified. As the train passes through 7 000 m radius curve section with the speed of 400 km/h, various track irregularities were set in the model. Combined with coherence analysis, the maximum sensitive wavelength of track vertical profile irregularity is 150 m and sensitive wavelength of track alignment irregularity is 200 m. The peak values of vertical acceleration on the vehicle body, lateral acceleration on the vehicle body, derailment coefficient, wheel load reduction rate, lateral force on the wheel axle are 1.21 times, 7.58 times, 4.8 times, 1.17 times, and 3.25 times respectively, which indicate that changes of railway line parameters have a small impact on the vertical acceleration and wheel load reduction rate, and have a significant impact on the lateral acceleration, derailment coefficient, and lateral force. The conclusion can provide theoretical basis for the evaluation of driving comfort and safety during the operation period, as well as the evaluation of track irregularity.
- Subjects
RAILROAD design &; construction; HIGH speed trains; LATERAL loads; TRAFFIC safety; PERFORMANCE theory; RAILROAD accidents
- Publication
Railway Investigation & Surveying, 2023, Vol 49, Issue 5, p102
- ISSN
1672-7479
- Publication type
Article
- DOI
10.19630/j.cnki.tdkc.202305060001