Abstract
A Super-speed Tube Train (SSTT) system is considered to be an alternative transportation system where trains could operate as fast as 700 km/h by reducing the air resistance in a vacuum tube structure. One of the most important technical requirements for design of SSTT system is assuring the airtightness in vacuum tube structures. In this paper a probabilistic analysis is performed to assess the airtightness performance of concrete vacuum tube system based on the analytical model and experimental tests. Uncertain design variables related to the airtightness of SSTT system were defined as random variables and specific probability distributions were assigned. The behavior of the internal pressure rise of a concrete tube structure was then probabilistically anticipated using stochastic analyses. The results of the analysis confirm that a probabilistic approach is fundamentally essential to the reliable airtightness evaluation of vacuum tube systems. In addition, a sensitivity analysis performed showed that among the variables considered the mean value of the air permeability due to system discontinuity and the pressure outside a tube structure have the most significant effects on the reliability of a system’s airtightness.
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Billard, Y., Debicki, G., and Coudert, L. (2005). “Leakage rate through a non-cracked concrete wall, comparison between two situations: Air pressure test and accident conditions.” Nuclear Engineering and Design, Vol. 235, Nos. 17-19, pp. 2109–2123, DOI: 10.1016/j.nucengdes.2005.05.028.
Cassat, A., Bourquin, V., Mossi, M., Badoux, M., Vernez, D., Jufer, M., Macabrey, N., and Rossel, P. (2003). “SWISSMETRO- Project development status.” International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2003 (STECH ’03), pp. 453–410, Tokyo, Japan.
Chang, K. M. (1998). “Numerical experiments on the evaluation of effective permeability and tunnel excavation in the three dimensional fracture network model.” Tunnel & Underground Space Technology, Vol. 8, No. 4, pp. 275–286.
Giotta, J. (Narrator) (2003). Transatlantic tunnel, Extreme Engineering, Discovery Channel, Powderhouse Productions
Imam, R. L. and Conover, W. J. (1980) “Small sample sensitivity analysis techniques for computer models, with an application to risk assessment.” Communications in Statistics, Vol. 9, No. 17, pp. 1749–1842, DOI: 10.1080/03610928008827996.
Kim, T. K., Kim, K. H., and Kwon, H. B. (2011) “Aerodynamic characteristics of a tube train.” Journal of Wind Engineering and Industrial Aerodynamics, Vol. 99, No. 12, pp. 1187–1196, DOI: 10.1061/41039(345)616.
Kleijnen, J. P. C. (1974). Statistical techniques in simulation: Part 1, New York (NY): Marcel Dekker Inc.
Korea Railroad Research Institute (2009). Development of New Infrastructure technology for ultra high speed tube train (PK09001C), Project Report.
Nam, S. W. (2010) “Parametric study on the capacity of vacuum pump for tube structure.” Journal of the Korean Society for Railway, Vol. 13, No. 5, pp. 516–520.
Okamoto, K., Hayakawa, S., and Kamimura, R. (1995), “Experimental study of air leakage from cracks in reinforced concrete walls.” Nuclear Engineering and Design, Vol. 156, Nos. 1-2, pp. 159–165, DOI: 10.1016/0029-5493(94)00941-Q.
Park, J., Cho, J., and Park, H.-J. (2014). “Probabilistic estimation of airtightness of performance of concrete vacuum tube structures.” 10th International Symposium on High Performance Concrete–Innovation & Utilization, September 16-18, Beijing, China
Park, J., Kim, L.-H., and Nam, S.-W. (2011). “Air-tightness evaluation of tube structures for super-speed Tube Railway Systems: II. System Test and Parametric Analysis.” Journal of the Korean Society for Railway, Vol. 14, No. 2, pp. 151–159.
Park, J., Kim, L.-H., Nam, S.-W., and Yeo, I. (2013). “Performance evaluation of airtightness in concrete tube structures for super-speed train systems.” Magazine of Concrete Research, Vol. 65, No. 9, pp. 535–545, DOI: 10.1680/macr.12.00161.
Song, X. F., Wei, J. F., and He, T. S. (2009). “A method to repair concrete leakage through cracks by synthesizing Super-absorbent Resin in situ.” Construction & Building Materials, Vol. 23, No. 1, pp. 386–391, DOI: 10.1016/j.conbuildmat.2007.11.009.
Tan, A., Zhang, T. X., and Wu, S. T. (2008). “Pressure and density of air in mines.” Indian Journal of Radio & Space Physics, Vol. 37, pp. 64–67.
Ziari, A. and Kianoush, M. R. (2009). “Investigation of flexural cracking and leakage in RC liquid containing structures.” Engineering Structures, Vol. 31, No. 5, pp. 1056–1067, DOI: 10.1016/j.engstruct.2008.12.019.
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Park, CH., Synn, JH. & Park, J. Probabilistic performance assessment of airtightness in concrete tube structures. KSCE J Civ Eng 20, 1443–1451 (2016). https://doi.org/10.1007/s12205-015-0735-z
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DOI: https://doi.org/10.1007/s12205-015-0735-z