ETFE Membrane Structure and Steel Structure for 2027 Belgrade Expo in Serbian

The design of the Serbian National Exhibition Center revolves around the concept of “coexistence of nature and culture,” skillfully integrating traditional Serbian architectural elements with modern architectural engineering techniques. At its core lies the principle of “functional adaptation + cultural expression.” Through innovative secondary steel structures, the design not only achieves stability in large-span spaces but also reflects the artistic theme of “floating forest” using lightweight components.

Wanhao is responsible for the construction of the ETFE membrane structure in this project, which are primarily located in the indoor and outdoor corridors, exhibition halls, and administrative building. These structures connect various exhibition areas, providing protection for access throughout the day. The specific types of membrane structures include single-layer ETFE membranes, as well as double-layer and four-layer ETFE air cushions. 

The post tensioning works and installation of membrane structures require the use of secondary steel structures as a base. From the initial processing in the factory to the subsequent on-site assembly and welding, strict compliance with European standard specifications must be ensured. Moreover, the use of advanced prefabrication techniques enables the components to be “precisely prefabricated and efficiently assembled”.

The successful first lifting of the secondary steel structures this time marks the official entry of the project into the stage of refined assembly of steel structures, laying a foundation for the subsequent construction of the steel roof structure.