Aerodynamic loads and bridge responses under train passage: case study of an overpass steel box-girder cable-stayed bridge
Tóm tắt
Increased train speeds have led to significant train-induced wind problems. This paper describes a numerical study of the aerodynamic loads produced when a train passes under a bridge and the bridge dynamic response based on a steel box-girder cable-stayed bridge. The results indicate that the wind pressure on the bottom plate and the maximum lift on the beam sections increase as the train speed increases or as the clearance under the bridge decreases. Changes in the intersection angle are found to have a greater impact on the 1/4-span and 3/4-span regions. The effects of the various influencing factors are basically the same in the construction and operation stages. As the train speed increases or the clearance under the bridge decreases, the bridge responses exhibit an upward trend. As the intersection angle decreases, the vibration displacement tends to increase, but the effects on the vibration acceleration and maximum counter-force of the temporary pier are not consistent. Compared with the construction stage, the dynamic responses of the main girder are smaller in the operation stage due to the larger overall rigidity and the support constraints. In the parameter ranges investigated in this study, the absolute values of maximum vertical bridge vibration displacement and acceleration decrease from 4 to 16 mm and from 85 to 400 mm/s2, respectively, in the construction stage to 1–5 mm and 42–174 mm/s2 in the operation stage. Moreover, the counter-force falling on the temporary pier after the main girder turns does not exceed the 2000-kN positive force or 300-kN negative force limits. In the operation stage, the bridge vibration responses will not affect the comfort of pedestrians.
Tài liệu tham khảo
Baker C, Jordan S, Gilbert T, Quinn A, Sterling M, Johnson T, Lane J (2014) Transient aerodynamic pressures and forces on trackside and overhead structures due to passing trains. Part 1: model-scale experiments; Part 2: standards applications. Proc Inst Mech Eng Part F J Rail Rapid Transit 228(1):37–70
Baker CJ, Brockie NJ (1991) Wind tunnel tests to obtain train aerodynamic drag coefficients: Reynolds number and ground simulation effects. J Wind Eng Ind Aerodyn 38:23–28
Bell JR, Burton D, Thompson MC, Herbst AH, Sheridan J (2015) Moving model analysis of the slipstream and wake of a high-speed train. J Wind Eng Ind Aerodyn 136:127–137
Bouras L, Ma L, Ingham D, Pourkashanian M (2018) An improved k-ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow. J Wind Eng Industrial Aerodyn 179:358–368
Bruno L, Coste N, Fransos (2012) Simulated flow around a rectangular 5:1 cylinder: Spanwise discretisation effects and emerging flow features. J Wind Eng Industrial Aerodyn 104–106:203–215
Butz C, Heinemeyer C, Keil A (2008) Human induced vibrations of steel structures: design of footbridges guideline (RFS2-CT-2007-00033). Brussels: Research Fund for Coal and Steel
Devolder B, Troch P, Rauwoens P (2018) Performance of a buoyancy-modified k–ω, and k–ω SST turbulence model for simulating wave breaking under regular waves using OpenFOAM. Coast Eng 138:49–65
Gerhardt HJ, Krüger O (1998) Wind and train driven air movements in train stations. J Wind Eng Ind Aerodyn 74–76:589–597
Hemida H, Krajnović S (2009) LES study of the influence of the nose shape and yaw angles on flow structures around trains. J Wind Eng Ind Aerodyn 98(1):34–46
Jiang Z, Liu T, Gu H, Guo Z (2021) A numerical study of aerodynamic characteristics of a high-speed train with different rail models under crosswind. Proc Inst Mech Eng Part F J Rail Rapid Transit 235(7):840–853
Launder BE, Spalding DB (1972) Lectures in mathematical models of turbulence. Academic, London, pp 358–426
Liu T, Jiang Z, Chen X, Zhang J, Liang X (2019) Wave effects in a realistic tunnel induced by the passage of high-speed trains. Tunn Undergr Space Technol 86:224–235
Liu Z, Chen Y, Wu Y, Wang W, Li L (2017) Simulation of exchange flow between open water and floating vegetation using a modified RNG k–ε turbulence model. Environ Fluid Mech 17(2):1–18
Lü M, Li Q, Ning Z, Ji Z (2018) Study on the aerodynamic load characteristic of noise reduction barrier on high-speed railway. J Wind Eng Ind Aerodyn 176:254–262
Markatos NC (1986) The mathematical modelling of turbulent flows. Appl Math Model 10:190–220
Niu J, Wang Y, Zhang L, Yuan Y (2018) Numerical analysis of aerodynamic characteristics of high-speed train with different train nose lengths. Int J Heat Mass Transf 127:188–199
Olsen NRB (2000) CFD algorithms for hydraulic engineering. Norway: Department of Hydraulic and Environmental Engineering, The Norwegian University of Science and Technology
Piller M, Nobile E, Hanratty TJ (2002) DNS study of turbulent transport at low Prandtl numbers in a channel flow. J Fluid Mech 458:419–441
Rocchi D, Tomasini G, Schito P, Somaschini C (2018) Wind effects induced by high speed train pass-by in open air. J Wind Eng Ind Aerodyn 173:279–288
Rollet-Miet P, Laurence D, Ferziger J (1999) LES and RANS of turbulent flow in tube bundles. Int J Heat Fluid Flow 20(3):241–254
Schetz JA (2001) Aerodynamics of high-speed trains. Annu Rev Fluid Mech 33(1):371–414
Soper D, Baker C, Jackson A, Milne DR, Le PL, Watson G, Powrie W (2017) Full scale measurements of train underbody flows and track forces. J Wind Eng Ind Aerodyn 169:251–264
Willemsen E (1997) High Reynolds number wind tunnel experiments on trains. J Wind Eng Ind Aerodyn 69–71:437–447
Wissink JG (2003) DNS of separating, low Reynolds number flow in a turbine cascade with incoming wakes. Int J Heat Fluid Flow 24(4):626–635
Xiong X, Yang B, Wang K, Liu T, He Z, Zhu L (2020) Full-scale experiment of transient aerodynamic pressures acting on a bridge noise barrier induced by the passage of high-speed trains operating at 380–420 km/h. J Wind Eng Ind Aerodyn 204:1–9
Yan B, Chen Y, Dai GL (2014) Dynamic response of fly-over cable-stayed bridge and bridge deck track structure under aerodynamic force of high-speed train. China Rail Sci 35(5):24–29
Yang N, Zheng X, Zhang J, Law SS, Yang Q (2015) Experimental and numerical studies on aerodynamic loads on an overhead bridge due to passage of high-speed train. J Wind Eng Ind Aerodyn 140:19–33
Zheng J, Li Q, Li X, Luo Y (2020) Train-induced fluctuating pressure and resultant dynamic response of semienclosed sound barriers. Shock Vib 2020:6901564