Dynamic response of a long span suspension bridge and running safety of a train under wind action

Xia, He; Guo, Weiwei; Xu, You‐Lin

doi:10.1007/s11709-007-0007-1

Cited by 10 publications

(7 citation statements)

References 8 publications

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“…• Recently a number of authors have reported on the effect of cross winds on trains on long span bridges where coupled calculations have been carried out considering bridge and train aerodynamics and dynamics, and the coupling of these different effects, in order to understand the effect of trains on bridge stability in cross winds, and bridge movement on the stability of trains in cross winds (85,86) .…”

Section: Other Issuesmentioning

confidence: 99%

A review of train aerodynamics Part 2 – Applications

Baker

2014

Aeronaut. j. (1968)

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This paper is the second part of a two-part paper that presents a wide-ranging review of train aerodynamics. Part 1 presented a detailed description of the flow field around the train and identified a number of flow regions. The effect of cross winds and flow confinement was also discussed. Based on this basic understanding, this paper then addresses a number of issues that are of concern in the design and operation of modern trains. These include aerodynamic resistance and energy consumption, aerodynamic loads on trackside structures, the safety of passengers and trackside workers in train slipstreams, the flight of ballast beneath trains, the overturning of trains in high winds and the issues associated with trains passing through tunnels. Brief conclusions are drawn regarding the need to establish a consistent risk based framework for aerodynamic effects.

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Section: Other Issuesmentioning

confidence: 99%

A review of train aerodynamics Part 2 – Applications

Baker

2014

Aeronaut. j. (1968)

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“…The model was validated by comparing it with measurements of the first 18 modal frequencies and shapes of the actual bridge. Using this model, Guo et al [ 21 ] predicted the dynamic displacement and acceleration responses of coupled train and bridge systems in crosswinds. However, they modeled the bridge deck as a simplified spine beam of equivalent sectional properties and were thus unable to capture the local stress and strain behavior of the bridge.…”

Section: Numerical Simulation: Dynamic Responses Of Long-span Multmentioning

confidence: 99%

Recent Research and Applications of Numerical Simulation for Dynamic Response of Long-Span Bridges Subjected to Multiple Loads

Chen

2014

The Scientific World Journal

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Many long-span bridges have been built throughout the world in recent years but they are often subject to multiple types of dynamic loads, especially those located in wind-prone regions and carrying both trains and road vehicles. To ensure the safety and functionality of these bridges, dynamic responses of long-span bridges are often required for bridge assessment. Given that there are several limitations for the assessment based on field measurement of dynamic responses, a promising approach is based on numerical simulation technologies. This paper provides a detailed review of key issues involved in dynamic response analysis of long-span multiload bridges based on numerical simulation technologies, including dynamic interactions between running trains and bridge, between running road vehicles and bridge, and between wind and bridge, and in the wind-vehicle-bridge coupled system. Then a comprehensive review is conducted for engineering applications of newly developed numerical simulation technologies to safety assessment of long-span bridges, such as assessment of fatigue damage and assessment under extreme events. Finally, the existing problems and promising research efforts for the numerical simulation technologies and their applications to assessment of long-span multiload bridges are explored.

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“…The influence of crosswinds on a moving vehicle deserves constant attention. Severe wind disasters may influence the moving-speed limit of a vehicle, affect its transportation capacity, and even cause vehicle shutdown or accidents [1][2][3][4][5]. For example, China is one of the few countries in the world that is prone to severe wind disasters.…”

Section: Introductionmentioning

confidence: 99%

Wind Speed Spectrum of a Moving Vehicle under Turbulent Crosswinds

Duan

2023

Applied Sciences

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Wind loads have become one of the key influencing factors for the running safety of vehicles and comfort of passengers. The investigation of the wind speed spectrum characteristics of a moving vehicle under turbulent crosswinds is of great importance. Expressions of the wind speed spectrum of a moving vehicle were obtained from the von Kármán spectrum, based on Taylor’s frozen flow hypothesis. The influencing factors, including the ratio of the vehicle speed to the wind speed and wind yaw angles, were analyzed. The change rules of the wind speed spectrum peak and its corresponding frequency were also studied. The results show that the wind speed spectrum peak values of the moving vehicle were larger than those of the static vehicle. The wind speed spectrum peak values corresponding to the moving vehicle were first increased and then decreased, as the wind yaw angles increased. Some of the frequencies corresponding to the longitudinal wind speed spectrum values of the moving vehicle were smaller than those of the static vehicle. Therefore, the energy had been transferred to the lower frequency. For the moving vehicle, the frequency values corresponding to the longitudinal wind speed spectrum peak were first increased and then decreased, as the ratio of the vehicle speed to the wind speed and the wind yaw angle increased.

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Dynamic response of a long span suspension bridge and running safety of a train under wind action

Cited by 10 publications

References 8 publications

A review of train aerodynamics Part 2 – Applications

A review of train aerodynamics Part 2 – Applications

Recent Research and Applications of Numerical Simulation for Dynamic Response of Long-Span Bridges Subjected to Multiple Loads

Wind Speed Spectrum of a Moving Vehicle under Turbulent Crosswinds

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