A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Skew wind actions on vehicles crossing bridges with solid parapets
https://orcid.org/0000-0002-1675-2640
https://orcid.org/0000-0002-0786-3859
Abstract This work focuses on the effect that the angle of incidence of the wind has on the flow around bridge decks with low-rise edge parapets, and how it affects the aerodynamic actions on vehicles. First, a generic deck model with different barrier configurations is studied using computational fluid dynamic (CFD) analysis, and it is observed that for very skew winds even relatively low barriers can deviate the flow to make it aligned with the direction of the deck, which is referred to as channelling effect in this study. The work continues with an extensive wind tunnel (WT) testing programme on a deck model that represents a realistic bridge with a conventional configuration of short side barriers. The flow visualisation and the aerodynamic forces measured on a high-sided vehicle show the existence of three different zones in terms of the skew angle of the wind, which are in agreement with the CFD results. It is concluded that skew winds can significantly increase the aerodynamic actions on the vehicles due to the reduction of the shielding area across the width of the deck, and also because of the along-deck wind channelling.
Highlights Detailed study on the wind flow around bridges with solid parapets. CFD analysis of the along-deck flow channelling effects in bridges under skew winds. Wind tunnel testing of aerodynamic forces on vehicles at different positions of the deck. Novel response parameters are proposed to study the observed channelling effects. Flow visualisation techniques are used describe the influence of the skew angle.
Skew wind actions on vehicles crossing bridges with solid parapets
https://orcid.org/0000-0002-1675-2640
https://orcid.org/0000-0002-0786-3859
Abstract This work focuses on the effect that the angle of incidence of the wind has on the flow around bridge decks with low-rise edge parapets, and how it affects the aerodynamic actions on vehicles. First, a generic deck model with different barrier configurations is studied using computational fluid dynamic (CFD) analysis, and it is observed that for very skew winds even relatively low barriers can deviate the flow to make it aligned with the direction of the deck, which is referred to as channelling effect in this study. The work continues with an extensive wind tunnel (WT) testing programme on a deck model that represents a realistic bridge with a conventional configuration of short side barriers. The flow visualisation and the aerodynamic forces measured on a high-sided vehicle show the existence of three different zones in terms of the skew angle of the wind, which are in agreement with the CFD results. It is concluded that skew winds can significantly increase the aerodynamic actions on the vehicles due to the reduction of the shielding area across the width of the deck, and also because of the along-deck wind channelling.
Highlights Detailed study on the wind flow around bridges with solid parapets. CFD analysis of the along-deck flow channelling effects in bridges under skew winds. Wind tunnel testing of aerodynamic forces on vehicles at different positions of the deck. Novel response parameters are proposed to study the observed channelling effects. Flow visualisation techniques are used describe the influence of the skew angle.
Skew wind actions on vehicles crossing bridges with solid parapets
https://orcid.org/0000-0002-1675-2640
https://orcid.org/0000-0002-0786-3859
Abstract This work focuses on the effect that the angle of incidence of the wind has on the flow around bridge decks with low-rise edge parapets, and how it affects the aerodynamic actions on vehicles. First, a generic deck model with different barrier configurations is studied using computational fluid dynamic (CFD) analysis, and it is observed that for very skew winds even relatively low barriers can deviate the flow to make it aligned with the direction of the deck, which is referred to as channelling effect in this study. The work continues with an extensive wind tunnel (WT) testing programme on a deck model that represents a realistic bridge with a conventional configuration of short side barriers. The flow visualisation and the aerodynamic forces measured on a high-sided vehicle show the existence of three different zones in terms of the skew angle of the wind, which are in agreement with the CFD results. It is concluded that skew winds can significantly increase the aerodynamic actions on the vehicles due to the reduction of the shielding area across the width of the deck, and also because of the along-deck wind channelling.
Highlights Detailed study on the wind flow around bridges with solid parapets. CFD analysis of the along-deck flow channelling effects in bridges under skew winds. Wind tunnel testing of aerodynamic forces on vehicles at different positions of the deck. Novel response parameters are proposed to study the observed channelling effects. Flow visualisation techniques are used describe the influence of the skew angle.
Skew wind actions on vehicles crossing bridges with solid parapets
Camara, Alfredo (author) / Fernandez-Elvira, Luis Enrique (author) / Stroumpouli, Chrysanthi (author) / Jagadeesh, Chetan (author)
2023-06-13
Article (Journal)
Electronic Resource
English
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