国家速滑馆（冰丝带）

The National Speed Skating Oval, known as the Ice Ribbon, occupies a site on Suchangguan South Road in Chaoyang District, on the western edge of the Olympic Forest Park. It faces the National Tennis Centre to the south, with Lincui Road to the west and Aolin West Road to the east, and forms part of the landmark cluster, with the Bird's Nest and the Water Cube, that makes Beijing the first city to have hosted both a Summer and a Winter Olympics. The oval stands on the site of the temporary hockey and archery venues of 2008, demolished in 2017; it is the only new competition venue built for the Beijing 2022 Winter Games in the city zone and hosted the long-track speed skating events. At its heart is a standard 400-metre speed skating track laid on a single continuous ice sheet of about 12,000 square metres, roughly the size of an athletics infield and the largest full-ice indoor rink in Asia. Lane markings can be reconfigured so the same sheet serves long-track and short-track racing, figure skating, ice hockey, curling and public skating. The site covers about 17 hectares and the building has 96,980 square metres of floor area, measuring some 180 metres east to west and 240 metres north to south, three storeys above ground and two below, with a height of 33.8 metres and 12,000 seats. Fourteen gold medals were decided here during the 2022 Games. The architecture gives the venue its name: a high-precision curved facade of 3,360 curved and flat glass panels, wrapped by 22 ribbon-like light bands that spiral up the building as a metaphor for speed on ice. The roof is a single-layer cable-net structure using domestically produced high-vanadium closed cables, the largest cable-net roof of any arena in the world. Ice making relies on a transcritical CO2 direct-cooling system, the first Winter Olympic speed skating venue to use the technology, with up to four megawatts of cooling capacity and heat recovery for hot water, dehumidification and ice resurfacing. The oval opened to the public on 9 July 2022 and now hosts ISU World Cup events, figure skating shows, concerts, product launches and corporate events. Lincuiqiao station on metro line 8 is within walking distance, and the site sits between the Olympic Forest Park and the North Fifth Ring Road.