Wind tunnel measurement of aerodynamic characteristics of trains passing each other on a simply supported box girder bridge

Li, Xiaozhen; Tan, Yiling; Qiu, Xiaowei; Gong, Zhenhua; Wang, Ming

doi:10.1007/s40534-021-00231-4

Cited by 16 publications

(5 citation statements)

References 15 publications

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“…Under the unsymmetrical load of 57 kN, the maximum torsion angle is 0.006 • . The maximum torsion angle is less than the value that was reported in a reference (0.019 • ), in which the torsional angle of a simple supported railway box girder was investigated [16]. Therefore, it demonstrated that the torsional stiffness of the girder tested in this study is sufficient to resist unsymmetrical loading and that the torsional deformation is not obvious.…”

Section: Torsional Performance Of the W-shaped Web Box Girdercontrasting

confidence: 47%

Experimental Test and Finite Element Analysis on a Concrete Box Girder of a Cable-Stayed Bridge with W-Shaped Prestressed Concrete Diagonal Braces

He,

Wang,

et al. 2024

Buildings

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This paper presents an experimental study on the box girder of a low-tower cable-stayed railway bridge with a W-shaped section that consists of prestressed concrete diagonal braces. A 1:6 scale test model was designed and constructed for the experiment. The mechanical behavior of the test model was investigated under two loading conditions: a double-track train symmetrical load and a single-track train unsymmetrical load. The experimental results were validated against a finite element model. Furthermore, the torsional performance of the box girder section was analyzed and discussed.

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Section: Torsional Performance Of the W-shaped Web Box Girdercontrasting

confidence: 47%

Experimental Test and Finite Element Analysis on a Concrete Box Girder of a Cable-Stayed Bridge with W-Shaped Prestressed Concrete Diagonal Braces

He,

Wang,

et al. 2024

Buildings

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“…There is mutual aerodynamic interference between vehicles and bridges under crosswinds. Some achievements have been made in the research of aerodynamic characteristics of trains in exposed environment, such as on the ground, subgrade, viaduct, or an open bridge structure [37][38][39][40][41]. However, only a few studies have been carried out on the aerodynamic interference effects of complex bridge structures (such as truss girder bridge) on trains.…”

Section: Bridge Deck Modelmentioning

confidence: 99%

Aerodynamic characteristics of a high-speed train crossing the wake of a bridge tower from moving model experiments

Cai

et al. 2022

Rail. Eng. Science

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In a strong crosswind, the wake of a bridge tower will lead to an abrupt change of the aerodynamic forces acting on a vehicle passing through it, which may result in problems related to the transportation safety. This study investigates the transient aerodynamic characteristics of a high-speed train moving in a truss girder bridge and passing by a bridge tower in a wind tunnel. The scaled ratio of the train, bridge, and tower are 1:30. Effects of various parameters such as the incoming wind speed, train speed, and yaw angle on the aerodynamic performance of the train were considered. Then the sudden change mechanism of aerodynamic loads on the train when it crosses over the tower was further discussed. The results show that the bridge tower has an apparent shielding effect on the train passing through it, with the influencing width being larger than the width of the tower. The train speed is the main factor affecting the influencing width of aerodynamic coefficients, and the mutation amplitude is mainly related to the yaw angle obtained by changing the incoming wind speed or train speed. The vehicle movement introduces an asymmetry of loading on the train in the process of approaching and leaving the wake of the bridge tower, which should not be neglected.

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“…The traditional test method mainly adopts the static vehicle model wind tunnel test, in which the force is measured by the balance. Recently, the moving train model test was used in several studies [30,31] to compare with the static train model test. The results show that the aerodynamic coefficients obtained by the two test methods are different.…”

Section: Static Wind Loadsmentioning

confidence: 99%

“…The final curve can also be synthesized by testing the aerodynamic coefficients of train at different positions. Second, static-dynamic intersection, usually the train on the windward side or leeward side is in a stationary state [31]. Third, dynamic intersection, both trains on the windward side and leeward side are in motion [41].…”

Section: Sudden Change Effect Of Windsmentioning

confidence: 99%

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Xiang

Wang

et al. 2022

Rail. Eng. Science

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In recent years, high-speed railways in China have developed very rapidly, and the number and span of the railway bridges are keeping increasing. Meanwhile, frequent extreme disasters, such as strong winds, earthquakes and floods, pose a significant threat to the safety of the train–bridge systems. Therefore, it is of paramount importance to evaluate the safety and comfort of trains when crossing a bridge under external excitations. In these aspects, there is abundant research but lacks a literature review. Therefore, this paper provides a comprehensive state-of-the-art review of research works on train–bridge systems under external excitations, which includes crosswinds, waves, collision loads and seismic loads. The characteristics of external excitations, the models of the train–bridge systems under external excitations, and the representative research results are summarized and analyzed. Finally, some suggestions for further research of the coupling vibration of train–bridge system under external excitations are presented.

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Wind tunnel measurement of aerodynamic characteristics of trains passing each other on a simply supported box girder bridge

Cited by 16 publications

References 15 publications

Experimental Test and Finite Element Analysis on a Concrete Box Girder of a Cable-Stayed Bridge with W-Shaped Prestressed Concrete Diagonal Braces

Experimental Test and Finite Element Analysis on a Concrete Box Girder of a Cable-Stayed Bridge with W-Shaped Prestressed Concrete Diagonal Braces

Aerodynamic characteristics of a high-speed train crossing the wake of a bridge tower from moving model experiments

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

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