Research on the road linear optimization design of bridge and tunnel connecting segment in the canyon

• Autorzy: Wang Lu , Liu Yuwen , Chen Xiaoxin

Identyfikatory

DOI

10.5604/01.3001.0014.0209

• Języki publikacji: EN

Abstrakty

EN

It is easy to skid and roll by centrifugal force and wind, which affects the safety of the vehicle. At the same time, the special location of bridge and tunnel connecting segment in the canyon will accelerate the wind, and make the transverse wind play a more important role in driving vehicles. Based on the acceleration effect of canyons on wind, the vehicle model is simulated by Carsim software, and the road and wind models are established. It is studied that the vehicle has different radius of circular curve under different wind levels, corresponding to different superelevation. The lateral acceleration, lateral deflection and transverse force coefficient are selected as the running state of the vehicle at different speeds to research the linear optimization design of bridge and tunnel connecting segment in the canyon. The result shows that when the wind force exceeds the fifth grade, it is possible for the vehicle to overturn under the limit minimum radius required by the standard value. In order to ensure the stability and safety of the vehicle, this paper considers the geographical position of bridge and tunnel connecting segment in the canyon and the relationship between the radius of the superelevation and circular curve. What’s more, it puts forward the optimal limit minimum radius of the circular curve with different wind grades of 5-9 grades. At the same time, when the road alignment cannot be optimized under the condition, this paper puts forward the speed limit that the vehicle safety can be guaranteed under different wind speed conditions. The speed limit can provide reference for traffic management and safety guarantee of mountain expressway.

Słowa kluczowe

EN

traffic engineering; curved road; simulation experiment; radius of curve; bridge; tunnel; traffic safety

PL

inżynieria ruchu; łuk drogi; eksperyment symulacyjny; promień łuku; most; tunel; bezpieczeństwo na drodze

• Wydawca: Warsaw University of Technology, Faculty of Transport
• Czasopismo: Archives of Transport
• Rocznik: 2019
• Tom: Vol. 52, iss. 4
• Strony: 81--93
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Wang Lu

• Chang’an University, School of Highway, Xi’an, China

autor

Liu Yuwen

• Chang’an University, School of Highway, Xi’an, China

autor

Chen Xiaoxin

• Chang’an University, School of Highway, Xi’an, China

Bibliografia

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• [13] Wang, L. (2012). The analysis of the impact from the canyon wind to driving safety based on the numerical simulation (Master's thesis). Chang’an University.
• [14] Wu, Z., Huo, Y., Ding, W., & Li, B. (2017). Bionic Shape Design of Electric Locomotive and Aerodynamic Drag Reduction. Archives of Transport, 48(4): 89-97.
• [15] Xu, J., Wang, H., Zhao, L., & Han, Y. (2014). Research on Minimum Radius of Highway Horizontal Curve with Crosswind Considered. Chinese Journal of Highway, 27(1): 38-43.
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• [17] Zhang, K. (2015). Simulation Analysis and Countermeasure of the Influence of Crosswind on Road Traffic Safety (Master's thesis). Chang’an University.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)