STUDY ON THE INFLUENCE OF BOLT ANCHORED CATENARY ON TUNNEL LINING UNDER THE AERODYNAMIC LOAD
DOI:
https://doi.org/10.14311/CEJ.2017.04.0031Keywords:
High–speed train, Tunnel lining, Aerodynamics load, Suspended ancillary facilities, Tension and compression cycleAbstract
In order to study the influence of Bolt anchored catenary on tunnel lining under the aerodynamic load, the paper takes a tunnel on Qinhuangdao -Shenyang Railway as an example.The force of lining structure is studied using numerical simulation based on the research and analysis of relevant theory and model test results. Firstly, the variation of the air pressure in the tunnel was calculated caused by the train when it is passing through the tunnel at different speeds (200 ~ 400km/h). Then, by ANSYS the aerodynamic load calculated by FLUENT is applied to the simplified catenary suspension. The main results are as follows: 1. The maximum normal stress of tunnel lining with train speed according to the power law, and maximum normal stress with train speed according to quadratic function relation; 2. Tunnel lining is subjected to push-pull stress because the magnitude and direction of aerodynamic loads change with the advance of the train; 3. The lining structure is mainly subjected to the stress of the Y direction, and this stress should not be neglected when design the structure of tunnel secondary lining. 4. The load spectrum of the lining structure under different train speed is given. The research results of this paper are of great significance to the optimization design of tunnel lining structure.
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Miyachi T, Ozawa S, Iida M, et al. Propagation characteristics of tunnel compression waves with multiple peaks in the waveform of the pressure gradient: Part 2: Theoretical and numerical analyses. Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail & Rapid Transit, 2015, 35(2):220–235.
WOODS W A, POPE C W. Secondary Aerodynamic Effects in Rail Tunnels During Vehicle Entry// Proceedings of the Second International Symposium on the Aerodynamics and Ventilation of Vehicle Tunnels. Cranfield: BHRA, Fluid Engineering, 1976:71-86.
Cross D, Hughes B, Ingham D, et al. A validated numerical investigation of the effects of high blockage ratio and train and tunnel length upon underground railway aerodynamics. Journal of Wind Engineering & Industrial Aerodynamics, 2015, 146(17):195-206.
LUO Jianjun. Aerodynamic Effect Induced by High-Speed Train Entering into Tunnel in High Altitude Area. Journal of Southwest Jiaotong University, 2016, (04):607-614.
LUO Jianjun. The Influences of Enlarged Sections and Ventilation Shafts on Pressure Waves in High-Speed Metro Tunnels. Modern Tunnelling Technology, 2016, (04):22-28.
LI Hongmei. Research on Distance between Tracks for Intercity Railway Based on Aerodynamics. Railway Engineering, 2016,(10):101-104.
CHENG Aijun, MA Weibin. Analysis of aerodynamics effect in changeable cross-section tunnel. Railway Engineering, 2016,(01):29-32.
ZHANG Fengyu, CHENG Shu. Development of wireless data acquisition system in real vehicle passing through tunnels during Aerodynamic tests. Journal of Railway Science and Engineering, 2016, (07):1401-1406.
POPE C W, GAWTHORPE R G, RICHARDS. An experimental investigation into the effect of train shape on the unsteady flows generated in tunnels// The 4th International Symposium on the Aerodynamics and Ventilation of Vehicle Tunnels. Cranfield Bedford England：BHRA，1982. C2, 107-128.
SHI Cheng-hua, YANG Wei-chao, et al. Analysis of catenary’s safety under train wind action in high-speed railway tunnel. Journal of Central South University (NATURAL SCIENCE EDITION), 2012, (09):3652-3658.
SHI Cheng-hua, YANG Wei-chao, et al. Study on Aerodynamic Influence on Stability of Ditch Covers in High-speed Railway Tunnels. Railway Transaction, 2012,(01):103-108.
Briffaut M, Benboudjema F, D’Aloia L. Effect of fibres on early age cracking of concrete tunnel lining. Part I: Laboratory ring test. Tunnelling & Underground Space Technology, 2016, 59:215-220.
Briffaut M, Benboudjema F, D’Aloia L. Effect of fibres on early age cracking of concrete tunnel lining. Part II: Numerical simulations. Tunnelling & Underground Space Technology, 2016, 59:221-229.
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