The National Speed Skating Hall is the landmark venue of the Beijing Winter Olympic Games in 2002. It will be used as the competition and training venue for speed skating events. As the designer, Beijing Institute of Construction has completed the preliminary design and construction drawing design stage of the full professional design work.
The plane of the National Speed Skating Hall is elliptical, and the roof is saddle-shaped. The curtain wall of the Temple of Heaven on the outside outlines a dynamic "ice ribbon". In order to realize the complex building shape, our design team put forward the main force system of steel structure, which consists of roof cable net, ring truss and stayed cables of lateral curtain wall, and skillfully built the "skeleton" to support the splendid "coat" of the building.
In order to make this skeleton an impeccable steel bar, the design team calculated and analyzed thousands of different working conditions, covering all possible situations faced by the complex Olympic building from construction to use. At the same time, the design team also commissioned the Space Structure Research Center of Zhejiang University to carry out structural model test and build a "mini-skeleton" with a geometric similarity ratio of 1:12 in the laboratory. The design results were verified from the feasibility of construction to the mechanical performance in an all-round way to ensure that the entire engineering design was safe.
Inside the "skeleton", the ring truss provides a closed elliptical boundary for the cable network and supports the concrete structure composed of 48 stand columns and ring beams; the upper end of the cable is pulled to the outer side of the ring truss and the lower end is connected to the concrete structure, which mainly balances the internal force of the cable network, improves the stability of the ring truss and provides support for the curtain wall structure. Cable net, ring truss and cable constitute a set of rigid-flexible and rigid-flexible coordinated force system.