Steel Structure Grid Shell

Steel structure grid work is a spatial grid steel structure formed by connecting steel pipe components through bolted spherical joints or welded spherical joints, belonging to a highly redundant and statically indeterminate spatial force system.
Each component only bears axial tension or pressure, and almost no bending moment, thus ensuring a reasonable stress distribution of the steel material.
It employs three-dimensional force transmission, enabling load transfer in multiple directions and maintaining excellent structural integrity.
All components are prefabricated in the factory and primarily assembled on-site, exhibiting a high degree of industrialization.
It has a light self-weight and strong spanning capacity, enabling it to form a large-area roof without intermediate columns.
Standardized structural forms, such as tetrahedral and triangular pyramidal meshes, can be combined to accommodate any planar shape.

1. Structural performance advantages

Large-span column-free indoor space: Easily achieve a clear span ranging from 30 to 100 meters, creating spacious areas with high space utilization.
Light weight and steel saving: Its dead load is much lower than that of steel trusses and concrete roofs, thereby reducing the cost of the foundation and substructure.
High stiffness and strong resistance to seismic and wind-snow loads: Even if a single component fails, multiple redundant load-bearing paths can prevent overall collapse; uniform deformation makes its seismic performance superior to traditional planar structures.
Strong hanging capacity: Air ducts, cable trays, lighting fixtures, maintenance walkways, ventilation equipment, and service platforms can be directly hung on the lower chords.

2. Construction & Schedule Merits

Mass production of members and spherical joints in factories ensures precise dimensions and easy quality control.

Bolted grid structures require no on-site welding and only bolt connection, minimizing open fire operations and construction dust.

Multiple erection methods are available including high-altitude scattered assembly, ground assembly followed by integral hoisting or lifting, greatly shortening the construction period.

Components are disassembled for easy transportation, suitable for construction sites with limited working space.

3. Economic & Practical Benefits

Low overall project cost with reduced expenses on foundation, civil engineering and roof auxiliary systems, delivering outstanding cost performance.

Flexible shape adaptability: applicable to square, rectangular, circular, fan-shaped, irregular curved surfaces and domed roofs.

Demountable and relocatable: can be disassembled and reused for project reconstruction or site relocation with a high material recycling rate.

Simple later maintenance: only regular anti-corrosion coating inspection and touch-up are required with convenient inspection access.

4. Environmental Protection Edge

Factory prefabrication generates minimal construction waste on site; steel materials are fully recyclable and environmentally friendly with low carbon emissions.

1. Public & Cultural Sports Buildings

Stadiums, natatoriums, training halls, convention & exhibition centers, museums, grand theatres, domed skylights and lecture hall roofs.

2. Transportation Hubs

High-speed railway station waiting halls, airport terminal buildings, toll station canopies, bus station roofs and large parking lot shelters.

3. Industrial Plants & Warehouses

Long-span workshops, storage warehouses, logistics sorting centers, coal storage sheds, aggregate stockyard shelters, raw material depots for cement plants and power plant storage enclosures.

Bolted Sphere Grid:

For conventional spans and moderate loads, projects with tight schedules and limited on-site welding requirements (gas stations, factory buildings, exhibition halls).

Welded Sphere Grid:

For ultra-long spans, heavy loads, large overhangs and projects with heavy suspended loads (coal storage sheds, aircraft hangars and large venues).

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