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Evaluation and Improvement of Wind Environment and Vehicle Runnability on Long-span Bridge Deck under Strong Crosswind

 Evaluation and Improvement of Wind Environment and Vehicle Runnability on Long-span Bridge Deck under Strong Crosswind
Autor(en): , ,
Beitrag für IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016, veröffentlicht in , S. 1149-1156
DOI: 10.2749/stockholm.2016.1136
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Ensuring the safety of various vehicles or trains passing through the bridge deck under strong crosswind is one of the most important topics for a long-span bridge. Based on the project of Xihoumen...
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Bibliografische Angaben

Autor(en): (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)
(State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)
(State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016
Veröffentlicht in:
Seite(n): 1149-1156 Anzahl der Seiten (im PDF): 8
Seite(n): 1149-1156
Anzahl der Seiten (im PDF): 8
Jahr: 2016
DOI: 10.2749/stockholm.2016.1136
Abstrakt:

Ensuring the safety of various vehicles or trains passing through the bridge deck under strong crosswind is one of the most important topics for a long-span bridge. Based on the project of Xihoumen Bridge, which will remain open to vehicle traffic until the incoming crosswind at the mid span reaches up to 36.5m/s, the wind environment near the deck surface above different traffic lanes were analyzed through numerical simulation and experiment, and the crosswind loadings were evaluated by the equivalent wind velocities for different vehicle models. As the need of adopting appropriate wind barriers to reduce crosswind speed above the deck surface was confirmed, 14 types of wind barriers were evaluated by the crosswind reduction factor, and their effects on the flutter and vortex-induced vibration (VIV) performance of the girder section were also checked. Finally, the optimum solution, an adjustable wind barrier, was proposed.