Design Challenges for Hålogaland Bridge, Norway

Abstract

<p>The COWI Team prepared in 2007 Basic Design and construction cost estimates for Hålogaland Bridge. The bridge is arranged as a single span suspension bridge with A-shaped concrete pylons, inclined cable planes and a closed steel box girder as bridge deck. The combination of a slender bridge and 2.2m high safety railings to prevent would-be-suicides jumping on impulse from the bridge poses a severe design challenge to fulfil the aerodynamic stability requirement of 56m/s at bridge deck level. The issue of vortex induced vibrations for closed steel box bridge decks poses another design challenge. The box section is arranged in such a way that the slope of the lower inclined side plates is at 15.8 degrees in relation to the horizontal bottom plate. Wind tunnel tests carried out in smooth flow have proved that vortex induced vibrations will not occur, thus saving the costs of installation and maintenance of mitigation measures.</p>

Experimental study on torsional behavior of spatial main cable for a self-anchored suspension bridge

“…Suspension bridge with spatial cables is one of the favorite bridges for the designers' choice because of its mechanical and aesthetic performance. In the last 10 years, suspension bridges with spatial cable have been greatly developed worldwide, such as Guangzhou Liede Bridge, Hangzhou Jiangdong Bridge (Ke et al, 2010), Nanjing Jiangxinzhou Bridge, Qingdao Bay Taku River Channel Bridge in China, Yongzong Bridge in Korea (Kim et al, 2002;Yoon et al, 2001), New Oakland Bay Bridge (Chou et al, 2006;John et al, 2002) in the United States, and Halogaland Bridge in Norway (Larsen et al, 2008).…”