VEGAS HIGH ROLLER: GIANT OBERSERVATION WHEEL DESIGN

摘要

When complete, the Vegas High Roller will be the world's tallest observation wheel at 550 feet. Designing a moving structure on this scale is a case study in structural optimization and efficiency; the final superstructure, including cabins, will weigh less than 5000 tons. This efficiency is inherent in the design of tension wheels, the list of which includes the world famous London Eye and Singapore Flyer. Like a bicycle wheel, the Vegas High Roller will be constructed with tensioned spokes and a rim that is kept in compression. This design is not only structurally efficient, but also yields superior fatigue performance to fairground-style Ferris wheels. The High Roller is planned to operate 18 hours a day for 50 years, so every weld, penetration, and attachment is detailed with fatigue in mind. In addition to being the world's tallest observation wheel, the High Roller will also have the world's largest capacity at 1120 passengers per 30 minute rotation. This level of public exposure requires the wheel to be resilient to potential damage, whether it is environmental, accidental, or deliberate in nature. A detailed failure modes and effects analysis has been conducted to identify potential threats to the structure and ensure that there are redundant systems in place wherever possible to prevent operational and safety failures. Where redundancy is not feasible, the structural design goes above and beyond code requirements to ensure the wheel will be safe in a seismic event, comfortable in strong winds or extreme temperatures, and that potential damage from blast or fire is mitigated. The final product is a giant observation wheel that is well integrated with the site, and will be a world class tourist attraction for decades to come.