Tensile membrane structure building

Technical Characteristics

1. Material Innovation

• Membrane Performance: Utilizes polyester fiber substrates or coating materials like PVDF/PTFE, featuring lightweight yet high strength (tensile strength up to 7,000 N/5 cm), excellent light transmission (10%-20% transmittance), and strong weather resistance (25-50 years lifespan).
• Structural Form: Membranes are tensioned over support structures via cables to create diverse shapes such as double-curved surfaces or ridge-cable forms. Negative Gaussian curvature designs maximize structural stiffness.

2. Mechanical Advantages

• Pre-tension System: Pre-tension is applied to maintain shape; geometric stiffness significantly exceeds elastic stiffness, ensuring stability.
• Load Distribution: Deforms under load to redistribute forces, minimizing internal stress—contrary to traditional "stiffer structure, smaller deformation" logic.

3. Integrated Design

• Holistic Process: Combines shape design, load analysis, and fabrication planning, accounting for construction impacts on structural form.
• Code Compliance: Employs limit state design based on probabilistic theory to ensure membrane stress remains below material strength thresholds.

Application Advantages

1. Functional Adaptability

• Large-span Construction: Lightweight and expansive (up to 180m spans), ideal for stadiums, exhibition halls, etc.
• Temporary Facilities: High detachability and reusability for temporary events or emergency shelters.

2. Aesthetic Value

• Fluid Designs: Smooth curves and translucent textures create iconic urban landmarks.
• Light Effects: Daylighting reduces energy use, while nighttime lighting transforms structures into luminous art.

3. Construction Efficiency

• Short Timelines: Factory prefabrication minimizes on-site work and delays.
• Cost Control: Affordable materials and simplified assembly lower overall costs compared to traditional structures.

Environmental Benefits

1. Energy Efficiency

• Natural Lighting: Translucent membranes cut lighting/AC costs (up to 20% transmittance) and enhance ventilation.
• Recyclability: Membranes are fully recyclable, with zero construction waste.

2. Eco-friendly Integration

• Low Maintenance: Self-cleaning surfaces (via rainwater) reduce upkeep and pollution.
• Landscape Harmony: Translucence blends seamlessly with natural surroundings.

3. Sustainability

• Durability: 25-50 year lifespan minimizes replacement cycles.
• Low-carbon Construction: Prefabrication and modularity cut on-site energy use.

Applications

Tensioned membrane structures are widely used in:

• Stadiums: Roofs or shade systems for spectator comfort.
• Temporary Exhibits: Flexible, quick-to-assemble spaces for creative displays.
• Landscape Features: Park pavilions, observation decks, etc., enhancing public spaces.

Technical Challenges

• Precision Demands: Strict control of membrane curvature and support geometry for stability.
• Fire Resistance: Some membranes require fireproof treatments to meet codes.
• Durability Management: Regular inspections for aging, creep, or damage, with timely repairs.