Definition and examples of structural steel spans

Definition

The span of a steel structure is the distance between the support points at the ends of a steel member. In construction engineering, this distance usually refers to the distance between load-bearing structures such as beams, roof frames, columns at both ends of arch coupons, piers or walls. Steel structure span is an important index to measure the difficulty of building design and construction, which directly affects the use function, safety and economy of the building.

Application Scene and Characteristics

Industrial plant

In the industrial field, steel structure is widely used due to its advantages of high strength, light weight and fast construction. Steel factory buildings with large single-span spans can provide more spacious production space to meet the installation and use requirements of large equipment.

Stadiums

Stadiums usually need to accommodate a large number of spectators and provide sufficient playing space. The large single span of steel structure enables the stadium to realize a large space and column-free design, which ensures that the spectators’ view is not blocked and enhances the viewing experience.

Structural Features

1.High strength and lightweight: steel structure is made of high-strength steel, which has excellent bearing capacity and anti-seismic performance. At the same time, the lightweight feature of steel reduces the dead weight of the building and the pressure on the foundation.

2.Convenient construction: steel structure components can be prefabricated, with high efficiency of on-site installation. The steel structure building with large single-span span can be quickly erected and shorten the construction period through reasonable construction organization and technical means.

3. Flexible and changeable: steel structure buildings have good plasticity and adaptability, and can be flexibly adjusted according to actual needs. As one of the important parameters of steel structure building, single span span can be reasonably designed according to different scenarios and functional requirements.

Examples

Shanghai Stadium

Shanghai Stadium is a typical example of a large-span steel structure and a cable-membrane structure used as the main load-bearing part of a large public building and a new roofing system. The quality of these structures has a direct impact on the safety and functionality of the building.

Pudong International Airport

Pudong International Airport also adopts a large-span steel structure, which not only provides spaciousness, but also enhances the seismic performance and safety of the building and meets the airport’s need for large space.

Shanghai New International Expo Center

In the construction of Shanghai New International Expo Center, the application of large-span steel structure provides flexible space layout to meet the needs of different types of exhibitions, and at the same time ensures the safety and stability of the building.

In summary, the definition of steel structure span and its characteristics and advantages in different application scenarios are fully reflected through specific project examples. These examples demonstrate the importance and wide application of steel spans in modern buildings.