Effect of wind barriers on the aeroelastic instabilities of a hinged-deck cross-section cable-stayed bridge

López-Núñez, Elena; Ogueta-Gutiérrez, Mikel; Gómez-Ortega, Omar; Manzanares-Bercial, Raúl; Roibás-Millán, Elena; Franchini, Sebastián

doi:10.1016/j.engstruct.2023.116112

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Wind barriers affect different safety evaluation characteristics of vehicle-bridge systems. Xia et al (2023) and Lopez-Nunez et al (2023) conducted wind tunnel experiments to study the effect of wind barriers on the vortex-induced vibration (VIV) and aeroelastic instabilities of the deck. Li et al (2023) clarify how the aerodynamic interference of wind barrier to the train-bridge system affects the dynamic response of the system.…”

Section: Introductionmentioning

confidence: 99%

Effects of wind barriers on the aerodynamic characteristics of twin-separated parallel decks for a long-span rail-cum-road bridge

Liu,

Yang,

Zou

et al. 2023

Advances in Structural Engineering

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The aerodynamic characteristics of twin-separated parallel decks for long-span rail-cum-road bridges with various wind barriers clamped at railway girder are more complicated because of aerodynamic interference. Experimental investigations on aerodynamic coefficient and wind pressure coefficients of twin girders under different incoming flow directions were conducted using wind tunnel tests. Three different heights ( H) varying from 2 m to 4 m and four different ventilation ratios ( R) varying from 20% to 50% for wind barriers were examined. Results indicated that the aerodynamic coefficients were affected significantly by the incoming wind direction, which must be considered, and the railway wind barrier affected the aerodynamic characteristics of the railway girder when it is located both upstream and downstream, but the laws are not the same. Due to the aerodynamic interference effect of the twin parallel girders, the aerodynamic characteristics of the adjacent highway girders were also affected by the wind barrier along the railway girder, especially when the highway girders were located downstream. While, the highway girders were less affected when located upstream. The influence of wind barrier height and ventilation ratios on the adjacent highway girders was completely different. Most importantly, the parameters optimization of wind barriers clamped at railway girders should be determined after a comprehensive evaluation of the aerodynamic characteristic of both the railway and highway girders.

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Section: Introductionmentioning

confidence: 99%

Effects of wind barriers on the aerodynamic characteristics of twin-separated parallel decks for a long-span rail-cum-road bridge

Liu,

Yang,

Zou

et al. 2023

Advances in Structural Engineering

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Experimental and numerical studies on unsteady galloping driving mechanism of a truss beam with solid barriers

Zhao,

Yu,

Wei

et al. 2024

Journal of Fluids and Structures

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Numerical study of wind loads on the streamlined bridge deck in the translating tornado-like vortex

Zhang,

Wang,

2023

Physics of Fluids

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Wind load is one of the key factors affecting the structural safety of long-span bridges. However, the tornado-induced load on the streamlined bridge deck is rarely studied and the influence of the translation of tornado vortices has not been considered. This study develops a computational fluid dynamics (CFD) method to simulate the translating tornado-like vortex (TLV) to investigate the tornado-induced load on the streamlined bridge deck. First, the numerical method for simulating a translating TLV is introduced and the model of the streamlined bridge deck of a kilometer-level bridge is constructed and verified. The characteristics of the flow field around the bridge deck are then analyzed. Finally, the lift force, drag force, and torsional force on the bridge deck in the translating TLV are investigated and compared with those in the straight-line wind field and the stationary TLV. The non-dimensional forces obtained in the translating TLV are provided as a reference for calculating the tornado-induced load on a streamlined bridge deck. The result shows that the wind load on the bridge deck in the TLV changes along the spanwise direction, which is significantly different from that in the straight-line wind field. In the translating TLV, the bridge deck sustains the lift force induced by the updraft and the drag force induced by the translating velocity. The load on the bridge deck in the translating TLV is significantly larger than that in the straight-line wind and the stationary TLV, which indicates that the translation effects of tornadoes should not be ignored.

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Effect of wind barriers on the aeroelastic instabilities of a hinged-deck cross-section cable-stayed bridge

Cited by 3 publications

References 31 publications

Effects of wind barriers on the aerodynamic characteristics of twin-separated parallel decks for a long-span rail-cum-road bridge

Effects of wind barriers on the aerodynamic characteristics of twin-separated parallel decks for a long-span rail-cum-road bridge

Experimental and numerical studies on unsteady galloping driving mechanism of a truss beam with solid barriers

Numerical study of wind loads on the streamlined bridge deck in the translating tornado-like vortex

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