Bolted ball grid frame is a modern spatial structure, which is formed by connecting steel pipe rods and steel ball nodes with high-strength bolts. Its advantages are mainly reflected in the following aspects.
Light structure and large span
Efficient material: Axial force design is adopted to give full play to the strength of steel, and the structure has a lightweight (only 1/3-1/2 of traditional steel structure), which can easily achieve large spans (more than 100 meters) and column-free space.
Strong adaptability: suitable for buildings that require large space, such as steel structure bolt ball grid gymnasiums, airport terminals, and exhibition halls.
Convenient construction and short construction period
Factory prefabrication: rods and bolt ball joints can be produced in a standardized manner, with high precision and controllable quality.
On-site assembly: modular assembly, no welding required, fast construction speed (30%-50% shorter construction period than traditional structures), and less affected by weather.
Flexible adjustment: It can be disassembled, rebuilt, or expanded, suitable for temporary buildings or places that need renovation.
Excellent earthquake resistance
Flexible structure: The nodes have a certain rotation ability and can absorb earthquake energy through deformation. The seismic performance is better than that of a rigid connection structure.
Uniform force transmission: The load is evenly transmitted through the grid to avoid stress concentration
Outstanding economic performance
Save materials: Lightweight design reduces steel usage and foundation costs.
Low overall cost: High construction efficiency, significant savings in labor and machinery costs.
Beautiful shape and flexible design
Strong spatial expression: can shape complex geometric shapes such as curved surfaces and spheres to meet architectural aesthetic requirements.
Good transparency: the grid structure can be combined with glass and tensioned membrane materials to enhance lighting and visual effects.
Environmentally friendly and sustainable
Recyclable: The steel recycling rate is over 90%, which is in line with the concept of green building.
Reduce waste: Factory prefabrication reduces on-site waste and construction pollution.
Easy maintenance
Strong durability: After anti-corrosion treatment (such as hot-dip galvanizing), the service life can reach more than 50 years.
Easy maintenance: local damage can be replaced separately, and the maintenance cost is low.
Typical application scenarios
Public buildings: stadiums, theaters, exhibition centers (such as the outer grid of the Beijing Olympic venue “Water Cube”).
Transportation hubs: airport terminals, high-speed rail station canopies.
Industrial facilities: large-span closed structures such as coal sheds and dry coal sheds.
Summary
Due to its advantages of light weight, fast construction, economy and artistry, bolt ball grid has become one of the preferred structures for modern large-span buildings, especially suitable for projects with high requirements on space, construction period and shape.
