How does tube truss achieve the unique shape of non-standard steel structure roof trusses?
Publish Time: 2025-06-25
In the field of modern architecture, designers have an increasing demand for creative expression of spatial structures, especially in large public buildings such as stadiums, exhibition centers, and airport terminals. Traditional standardized steel structures can no longer meet personalized and diversified design requirements. As a spatial structural system composed of steel tube components connected by nodes, tube truss has become an ideal choice for achieving the unique shape of non-standard steel structure roof trusses due to its good mechanical properties and high plasticity.1. Flexible and changeable geometric construction capabilitiesOne of the biggest advantages of tube truss is the high flexibility of its geometric construction. Unlike traditional steel beam-column structures, tube truss mainly uses round or square tubes as chords and webs, which are connected by welding or bolts to form stable triangular units. This unitized and modular construction method allows designers to freely adjust the node position, rod length and angle according to the building shape, thereby combining complex and smooth spatial surfaces.For example, in some special-shaped roof projects, designers can use parametric modeling technology to convert the building shape into a series of precise tube truss component sizes, and use computer-aided manufacturing (CAM) for processing to ensure that each component can accurately fit the overall structure, and finally present a unique roof form with great visual impact.2. Adapt to large spans and complex stress conditionsNon-standard steel structure roof trusses are often used in large-span spaces, such as gymnasiums, conference centers, high-speed rail stations, etc. These places not only require the structure to have sufficient bearing capacity, but also hope to reduce internal columns to obtain a wider use space. With its excellent bending and torsion resistance and lightweight characteristics, tube truss can effectively span a large span of 60 meters or even hundreds of meters while maintaining good stability and safety.In addition, the tube truss system can evenly distribute the load to each component by optimizing the main force direction, avoiding local stress concentration and improving the safety redundancy of the overall structure. The adjustability of this force characteristic provides architects with greater freedom in modeling, enabling them to achieve a more artistic roof truss design without sacrificing structural safety.3. Node connection technology supports the realization of complex shapesThe key to the realization of complex non-standard roof truss shapes lies in its diverse node connection methods. Common connection forms include spherical nodes, intersecting welded nodes, flange connections, welded hollow spherical nodes, etc. Different types of nodes are suitable for different stress conditions and construction conditions, and also affect the appearance of the overall structure.For example, in some curved roof projects, the use of welded hollow spherical nodes can achieve seamless docking of rods in multiple directions, making the structural lines more smooth and natural; while in temporary exhibition hall projects that require frequent disassembly or rapid installation, flange connections or pin-type nodes can be selected to improve assembly efficiency and facilitate later maintenance.By reasonably selecting node types and combining digital modeling technology, engineers can create non-standard roof truss shapes with a sculptural and futuristic feel while ensuring structural strength.In summary, tube truss has become the core solution for achieving unique shapes of non-standard steel structure roof trusses with its geometric flexibility, force optimization capabilities, diverse node technologies, and high integration with architectural design. It not only expands the expressiveness of architectural structures, but also provides solid technical support for the innovative design of modern buildings.
