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Analysis on running safety of train on the bridge considering sudden change of wind load caused by wind barriers

Research Article
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Abstract

The calculation formulae for change of wind load acting on the car-body are derived when a train moves into or out of the wind barrier structure, the dynamic analysis model of wind-vehicle-bridge system with wind barrier is established, and the influence of sudden change of wind load on the running safety of the train is analyzed. For a 10-span simply-supported U-shaped girder bridge with 100 m long double-side 3.5 m barrier, the response and the running safety indices of the train are calculated. The results are compared with those of the case with wind barrier on the whole bridge. It is shown that the sudden change of wind load caused by wind barrier has significant influence on the lateral acceleration of the car-body, but no distinct on the vertical acceleration. The running safety indices of train vehicle with sectional wind barriers are worse than those with full wind barriers, and the difference increases rapidly with wind velocity.

Keywords

wind barrier sudden change of wind load dynamic response running safety comfort 

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Notes

Acknowledgements

The research described in this paper was supported by the National Natural Science Foundation of China (Grant Nos. 51608087 and U1434205), Liaoning Provincial Natural Science Foundation of China (No. 201602075), and the Fundamental Research Funds for the Central Universities of China (No. 3132017020).

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Copyright information

© Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of Road and Bridge EngineeringDalian Maritime UniversityDalianChina
  2. 2.Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment (Beijing Jiaotong University)BeijingChina
  3. 3.School of Civil EngineeringBeijing Jiaotong UniversityBeijingChina

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