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Cable-supported Bridges

SOH Wind Engineering and Svend Ole Hansen ApS have been consultants regarding different wind engineering aspects of many cable supported long span bridges: Brusymfonien, the Storebælt and Øresund bridges in Denmark, the Messina Bridge in Italy, the Carquinez Bridge in California, the Hardanger Bridge, the Storda Bridge and the Bømlo Bridge in Norway, the Sunningesund Bridge and the Svinesund Bridge in Sweden, the Port Tawe Bridge in United Kingdom, and the George Washington Bridge in the United States.

Examples of services provided for some of the bridges are:

Forth Replacement Crossing – Scotland

Wind engineering aspects of the Forth Replacement Crossing, a 4-span cable-stayed bridge with main spans of 650 m. Wind actions of two 322 m long cantilevered bridge decks and significance of neighboring bridge decks during construction stage. Wind tunnel tests for determination of structural vibrations and wind loads were carried out. Wind buffeting and flutter were part of the structural vibrations investigated. Theoretical calculations and interpretations of wind tunnel results were carried out. Client: Rambøll

Messina Bridge – Italy

Wind engineering aspects of the Messina suspension bridge with a main span of 3300 m. Wind tunnel tests for determination of structural vibrations, wind load, and wind-induced traffic accidents were carried out. An estimation of extreme winds at the Messina site was also performed. Wind buffeting, flutter and vortex-induced vibrations were part of the structural vibrations investigated. Theoretical calculations and interpretation of wind tunnel test results were carried out. Client: Steinman Boynton Gronquist & Birdsall (today Parsons Corporation)

George Washington Bridge

SOH Wind Engineering was contracted by Ammann & Whitney as part of the replacement of the suspender ropes and rehabilitation of the main cables and cable strands.

Our role in the project was to investigate the current dynamics and wind loads of the bridge. Once these were determined, the proposed railing and sidewalk changes were evaluated to determine the feasibility. The project included two proposed sidewalk configurations and extreme wind estimation of the site.

Storebælt (the Great Belt) Bridge – Denmark

Wind engineering aspects of the Storebælt suspension bridge with a main span of 1624 m. Wind tunnel tests for determination of structural vibrations, wind load, and wind-induced traffic accidents were carried out. An estimation of extreme winds at the Storebælt site was also performed. Wind buffeting, flutter and vortex-induced vibrations were part of the structural vibrations investigated. Theoretical calculations and interpretation of wind tunnel test results were carried out. Clients: Steinman Boynton Gronquist & Birdsall (today Parsons Corporation) and A/S Storebæltsforbindelsen (today A/S Storebælt)

Hardanger Bridge – Norway

Wind engineering aspects of the Hardanger suspension bridge with a main span of approx. 1300 m. Quality assurance of the extensive wind engineering studies carried out in the 90’ties. Investigations from 2006 to 2008 covered comprehensive wind tunnel testing of the aerodynamic characteristics of the bridge deck including improvements of the structure by aerodynamic means. Wind buffeting, flutter and vortex-induced vibrations were part of the investigations carried out. Time domain analyses of buffeting and flutter vibrations. Client: Norwegian Public Roads Administration

Bach Dang Bridge – Vietnam

SOH Wind Engineering in partnership with The He Geo was contracted by Transport Engineering Design Incorporation to provide wind engineering services of the Bach Dang cable-stayed bridge, with two main spans of 240 m. Wind tunnel tests for determination of structural vibrations and wind loads were carried out for the in-service bridge as well as the bridge under construction. Wind buffeting, galloping, flutter, and vortex-induced vibrations were part of the structural vibrations investigated. Structural vibrations were investigated both with and without traffic present to capture the full range of bridge dynamics. Theoretical calculations and interpretation of wind tunnel test results were carried out.