1. Background and Industry Trends
With the rapid development of the sports industry, various large-scale stadiums are constantly being built. From football fields and basketball courts to comprehensive sports centers, the functionality, aesthetics, and structural safety of buildings are all being placed at a higher level.
However, for long-span roofs, traditional steel frame or truss structures often face problems such as excessive self-weight, low material utilization, and long construction cycles. How to achieve lightweight, high-strength, and efficient construction while ensuring safety and aesthetics has become the core concern for designers and contractors.
2. Common Customer Issues
Based on LF's many years of project experience, the following are some common customer concerns:
(1) Large Span and Complex Stress: The span is often between 60 and 150 meters. The ultra-large span makes it extremely difficult to control the internal forces, deflection, and stability of the members, posing challenges to structural selection, steel consumption, and node design.
(2) Minimize Column Impact: To achieve optimal viewing views and unobstructed space, the number of internal columns must be minimized, placing higher demands on the economy and safety of the structural system.
(3) Tight Construction Schedule: The tight schedule of the event makes on-site hoisting, welding, and installation efficiency critical control points.
(4) Environmental Protection and Sustainability: Involving a large consumption of steel, the recyclability of materials, the application of green building materials, and environmental control during construction (such as noise and dust) must be considered.
(5) High Maintenance and Corrosion Protection Requirements: Steel structures are highly susceptible to corrosion in complex environments over extended periods. This necessitates a highly durable coating system, and the quality of corrosion protection design and construction directly impacts the building's lifespan.
3. Solutions
In response to the issues identified above, LF took the following actions during project construction:
(1) Adopting Space Truss or Grid Structures
Optimizing the arrangement of members and efficiently distributing the load to each node improves structural stability and load-bearing capacity, reducing the difficulty of controlling internal forces and deflection. This can reduce material usage by 10–20%.
(2) Large-Span Structural Design
To address this issue, a large-span structure designed with LF is primarily adopted. This effectively reduces internal columns, improves space utilization and the viewing experience, while optimizing structural economy and safety.
(3) Construction Period
① Modular and standardized design reduces on-site processing time; ② Optimized structural form and node design simplify the construction process; ③ Design and construction processes are integrated to improve on-site efficiency.
(4) Surface Corrosion Protection and Maintenance System Upgrade
The LF high-performance anti-corrosion coating system, combined with scientific construction techniques, enhances the durability of the steel structure and extends the building's lifespan.
(5) Customized Structures Adaptable to Multiple Climates
For coastal high-wind areas, high-temperature or high-humidity climates, wind and earthquake resistance can be improved through node reinforcement and steel grade adjustment.
4. Project Case: Elliptical Steel Truss Stadium Grandstand in the Philippines
Project Name: Prefabricated Stadium Roof Construction
Structural Form: Main concrete frame structure with roof space frame structure
Span: Width 19.633 meters, Length 104 meters
Design Highlights:
Modular prefabrication + on-site bolted assembly structural system
Utilization of corrosion-resistant Q355 steel with epoxy zinc-rich primer
Pipe truss structure designed for 50-year service life
Outcomes:
25% shorter construction timeline compared to traditional methods, 15% reduced structural weight, and exceptional stability during typhoon seasons.
5. Conclusion and Call to Action
The steel structure system provides a comprehensive solution for large-span stadiums that balances strength, aesthetics, and economy.
Through modular prefabrication, precise installation, and digital design collaboration, not only is project efficiency significantly improved, but the visual appeal of the building is also enhanced.
LF is committed to providing efficient and reliable integrated steel structure solutions for sports, exhibition, and public buildings worldwide. Contact us to learn more about customized design and construction services for large-scale roof projects.
