Reticulated steel cable system in membrane structure building

The cable net system in membrane structures is a critical component that plays a vital role in ensuring the overall stability, safety, and adaptability of the structure under various environmental conditions. Below is a detailed explanation of the cable net system in membrane structures:

System Overview

The cable net system in membrane structures typically refers to a diagonal cross-net steel cable system. It encases the entire outer membrane structure through a crisscross network of steel cables. Its primary function is to evenly distribute external forces and air-supported pressure to the ground anchor system, significantly reducing the load borne by the membrane.

Structural Features

1. The diagonal cable net system fully envelops the outer membrane, effectively transferring loads from the membrane to the cable system and dispersing them uniformly to the anchor system.
2. This design minimizes membrane stress while providing optimal stability against extreme weather conditions such as heavy storms and snow loads, thereby extending the structure's service life.
3. The system allows adjustable internal pressure within the membrane (typically 1.5-3.0 kPa) to resist wind speeds up to 150 mph (67 m/s) and snow loads of 20-50 pounds per square foot (0.96-2.4 kPa), tailored to geographic requirements.

Performance Advantages

1. The unique diagonal cable configuration reduces membrane loads by approximately 6 pounds per square foot (0.29 kPa) compared to non-net systems under hurricane conditions, ensuring superior stability.
2. Adaptable to diverse climates and terrains, it withstands extreme weather (high winds, heavy snow) while maintaining structural integrity.
3. By lowering membrane stress, the system extends the building's lifespan and reduces maintenance costs.

Technical Implementation

1. Cables are distributed along pre-designed lines or extended curved surfaces, offering flexibility in layout.
2. The entire structure can be segmented into multiple curved or polygonal sections for fabrication and assembly, accommodating complex architectural shapes and design requirements.

Conclusion

The cable net system in membrane structures serves as a cornerstone for stability, safety, and durability through its innovative design. As technology evolves, this system will continue to play an increasingly pivotal role in advancing membrane architecture worldwide.