Overview
Spherical welded space frames are three-dimensional lattice structures composed of interconnected spherical nodes and tubular members. Developed in the 1960s, they revolutionized large-span architecture by enabling column-free spaces exceeding 200 meters. The system’s modularity allows prefabrication, reducing on-site assembly time by approximately 30% compared to conventional steel frameworks. Modern variants incorporate BIM (Building Information Modeling) for precision engineering, with tolerances under ±2mm per node. Major Chinese manufacturers like Zhejiang Southeast Space Frame Co. export these systems globally, particularly for sports venues and transportation hubs.
Structure and Working Principle
The framework consists of three core components: spherical nodes (typically 100–500mm diameter), connecting pipes (Φ48–Φ219mm), and sealing plates. Load distribution follows the principle of multi-directional force transmission, where each node bears axial forces from up to 18 connecting members. Finite element analysis (FEA) software optimizes member sizing to achieve safety factors of 1.5–2.0 under design loads. Key innovations include bolt-assembled nodes for temporary structures and welded nodes for permanent installations. The hollow sphere design reduces weight by 15–20% versus solid nodes while maintaining equivalent strength.
Key Features
1. **High Span-to-Weight Ratio**: Supports 80–120kg/m² roof loads across 150m+ spans, using only 25–40kg steel/m². 2. **Seismic Performance**: Dynamic analysis shows 20–30% better energy dissipation than rigid frames. 3. **Corrosion Options**: Hot-dip galvanizing (80μm) or fluorocarbon coatings for coastal environments. Advanced systems integrate smart monitoring with strain gauges embedded in critical nodes, transmitting real-time stress data to building management systems. This is particularly valuable for structures in typhoon-prone regions.
Application Areas
**Primary Markets**: 1) Sports: 70% of FIFA-standard stadium roofs in Asia use this system. 2) Transportation: Beijing Daxing Airport’s 80,000m² terminal roof. 3) Energy: Solar panel support structures for PV power stations. **Emerging Uses**: Floating space frames for offshore platforms and modular data centers. The 2022 Qatar World Cup stadiums demonstrated fire-resistant adaptations with ceramic fiber coatings for nodes.
Maintenance and Precautions
Annual inspections should check: 1) Bolt tightness (torque values per EN 1090), 2) Coating integrity (salt spray test ASTM B117), 3) Node deformation (3D laser scanning). In snowy regions, implement load monitoring when accumulation exceeds 30cm. Critical defects include: cracks radiating from weld seams (detectable via UT testing) and spherical node ovalization exceeding 3% diameter. Repair protocols require node replacement rather than patching to maintain structural integrity.
B2B Procurement Guide
**Technical Specifications**: Demand EN 10210-certified steel pipes and ISO 5817-compliant welds. For seismic zones, specify grade 8.8 high-strength bolts. **Lead Times**: 8–12 weeks for custom designs; stock systems ship in 3 weeks. **Cost Drivers**: 1) Node machining precision (CNC lathe vs. manual), 2) Coating type (standard epoxy vs. PTFE), 3) Transport (flat-packed modules save 15% logistics costs). Always request full-scale test reports for node-pipe assemblies.
Related Manufacturers
- 主营：球形网架、煤棚网架、室内外网架、钢结构网架、大跨度网架、煤棚加油站罩棚
- 主营：加工各类钢网架
- 主营：钢结构网架、球形网架、网架加工、加油站9网架
- 主营：煤棚网架、大跨度网架、体育场馆网架、封板锥头螺栓
- 主营：储存罐、空心球、粉料仓、焊接球、网架、螺旋仓、储料仓、钢结构、储油罐、储存仓、石灰石料仓、水罐、水箱、油罐、SF双层罐、钢板仓、片装仓、粮仓、中转仓
- 主营：网架加工、螺栓球网架、球形网架、煤棚网架、大跨度网架、管桁架加工
- 主营：网架封板、网架安装、工程网架、网架锥头、螺栓球网架、储煤棚网架、干煤棚网架、健身馆网架、工业厂房网架、封闭料场网架、原料厂大棚网架、八方钢构、管桁架结构
- 主营：球铰支座、抗震球铰支座、固定铰支座、抗震球形铰支座、GQZ球形支座、GPZ球形支座、网架橡胶支座、网架支座、双向滑动支座、双向滑动铰支座、抗震球型钢支座、固定球铰支座、连廊支座、弹性球铰支座、隔震支座、双向滑动弹性支座、球型钢支座、橡胶支座、桥梁支座、652型止水带、橡胶止水带、钢边止水带、滑动铰支座、成品滑动铰支座、钢结构支座
- 主营：网架、网架加工厂、网架加工、大跨度网架、球形网架、螺栓球网架、厂房网架、煤棚网架、体育馆网架、高铁站网架、户外网架、管桁架
- 主营：网架加工、螺栓球网架、煤棚网架、风雨操场网架、机场网架、加油站网架、球形网架、焊接球网架、收费站网架、储煤棚网架、干煤棚网架、料场网架、屋面网架、电厂网架、厂房网架、球形网架加工
- 主营：煤棚网架、加油站网架、螺栓球网架、网架
- 主营：承接网架、网架安装、浩华网架
- 主营：球形网架、焊接球网架、大跨度网架、煤棚加油站棚顶
- 主营：球形网架、煤棚网架、钢结构网架、大跨度网架、煤棚加油站罩棚
- 主营：钢结构网架、加油站网架、螺栓球网架、煤棚网架、球形网架