Dynamic response of trackside structures due to the aerodynamic effects produced by passing trains

Carassale, Luigi; Brunenghi, Michela Marré

doi:10.1016/j.jweia.2013.09.005

Cited by 32 publications

(10 citation statements)

References 8 publications

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“…concerning noise barriers and trackside structures at high speed train lines, where frequent passings can lead to dynamic reactions and material fatigue, see e.g. CEN (2005), Friedl et al (2013), Lee (2009) and Carassale and Brunenghi (2013). Comprehensive reviews including field and numerical studies of high speed trains especially regarding the aerodynamics in tunnels, train passing close to each other and the crosswind exposure can also be found in Schetz (2001) and Raghunathan et al (2002).…”

Section: Introductionmentioning

confidence: 99%

Full scale experiments on vehicle induced transient loads on roadside plates

Lichtneger

Ruck

2015

Journal of Wind Engineering and Industrial Aerodynamics

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Section: Introductionmentioning

confidence: 99%

Full scale experiments on vehicle induced transient loads on roadside plates

Lichtneger

Ruck

2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…Some field test results showed that the pressure amplitude of the train-induced wind load acting on the wind barrier can be more than 1000 Pa, which far outweighs other loads [18]. Barrier cracks, fatigue failures, and other damage caused by the wind induced by high-speed trains have been observed [19]. In 2003, Germany expended approximately 30 million euros to reconstruct and repair the barriers along the Cologne-Frankfurt high-speed line due to fatigue failure induced by high-speed train passes [16].…”

Section: Introductionmentioning

confidence: 99%

Wind Load Characteristics of Wind Barriers Induced by High-Speed Trains Based on Field Measurements

Zou

et al. 2019

Applied Sciences

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This paper focuses on field measurements and analyses of train-generated wind loads on wind barriers (3.0 m height and porosity 0%) with respect to different running speeds of the CRH380A EMU vehicle. Multi-resolution analysis was conducted to identify the pressure distribution in different frequency bands. Results showed that the wind pressure on the wind barrier caused by train-induced wind had two significant impacts with opposite directions, which were the “head wave” and “tail wave”. The peak wind pressure on the wind barrier was approximately proportional to the square of the speed of the train, and the peak wind pressure decreased rapidly along the wind barrier height from the bottom of the wind barrier. The maximum wind pressure occurred at the rail surface height. Furthermore, results of the multi-resolution analysis illustrated that the energy of the frequency band from 0 to 2.44 Hz accounted for 94% of the total energy. This indicated that the low-frequency range component of the wind pressure dominated the design of the wind barrier. The frequency of pulse excitation of train-induced wind loads may overlap with the natural frequency of barriers, and may lead to fatigue failure due to cyclic loads generated by the repeated passage of high-speed trains. In addition, the speed of the train had a negligible effect on the energy distribution of the wind pressure in the frequency domain, while the extreme pressure increased slightly with the increase of the speed of the train.

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“…Safety and comfort of running will be affected seriously by the meeting [2]. For example, trains will get obvious deformation; air inlet devices of the air conditioning system will be damaged; instant yaw of trains will be excessive [3,4]. During the meeting, due to influential factors including impacts from aerodynamic forces and track unevenness, relative displacement, velocities and accelerations will be generated between parts and components of trains, where passengers' riding comfort will be directly affected by the train vibration.…”

Section: Introductionmentioning

confidence: 99%

“…Li [13] applied simulation technologies combining fluid software FLUENT with dynamics software SIMPACK to simulate the high-speed train meeting in an environment without crosswinds, and analyzed aerodynamic performance and dynamic features in the meeting. Through combining numerical simulation with a dynamic pressure system, Carassale [3] studied the meeting pressure waves of two trains which ran on a track at the speed of 200 km/h. Zhao [14] used the commercial software FLUENT to simulate two meeting trains in crosswind environment, and conducted a detailed analysis on aerodynamic performance of high-speed trains.…”

Section: Introductionmentioning

confidence: 99%

Study on unsteady aerodynamic characteristics of two trains passing by each other in the open air

Chen¹,

Wu²

2018

J. vibroeng.

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Based on three-dimensional, non-steady, compressive and unsteady control equations and-turbulence model, the paper adopts the finite volume method and moving grid technologies to conduct a numerical simulation analysis on pressure waves and aerodynamic forces (force moments) of two meeting trains in the open air. The simulation model has been validated by experimental test. Computational results show that during the meeting, the damage of the lateral window glass during the meeting is caused by that the window glass will be sucked out by negative pressures rather than be hit by positive pressures; both head wave pressure amplitude and tail wave pressure amplitude are in direct ratios to the square of the running speed; resistance values of the head and tail train experienced several changes, but the changing rules of the head train are opposed to those of the tail train; the lift force of the head train is downward all the time, the lift force is more than that of other train bodies, and lift force directions of the middle train and the tail train change alternately; the head train has the largest lateral force, the tail train ranks the second position, and the middle train ranks the last position; each train experiences 6 shaking force moment impacts including outward, inward, outward, inward, outward and inward impacts in succession; each train experiences 6 nodding force moment impacts, including downward, upward, downward, upward, downward and upward impacts, in succession.

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Dynamic response of trackside structures due to the aerodynamic effects produced by passing trains

Cited by 32 publications

References 8 publications

Full scale experiments on vehicle induced transient loads on roadside plates

Full scale experiments on vehicle induced transient loads on roadside plates

Wind Load Characteristics of Wind Barriers Induced by High-Speed Trains Based on Field Measurements

Study on unsteady aerodynamic characteristics of two trains passing by each other in the open air

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