Steel Space Frame Installation

Installation of Space Frame Flat Grid Canteen in Nursing Home

As a grid structure composed of multiple rods in the same plane according to a certain rule, the plane space frame grid has been widely used in various projects due to its unique mechanical properties and structural advantages. In terms of advantages, the plane space frame grid first has excellent force performance. Its grid structure can evenly transfer the load to the surroundings through the rod nodes, forming a balanced system with multiple points of force. Under the same span, the bending stiffness is more than 30% higher than that of the solid beam structure, which can effectively cope with uniformly distributed loads and local concentrated loads.

MOQ: 10000 square meters

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Overview of the Plane Space Frame Canteen Project

Overview of design drawings
Processing process
Details and duration of space frame installation

1. Overview of design drawings
Structural selection
Positive tetrahedral bolt ball space frame (grid size 3.6m×3.6m)
Span 42m×60m, eaves height 6.5m (central arch 1.5%), column-free design
Load design
Dead load: 0.25kN/㎡, including ceiling/lighting.
Live load: 2.0kN/㎡, local reinforcement to 3.0kN/㎡ in the dining area.
Wind load: 0.45kN/㎡, once-in-a-century verification.
Seismic resistance: 7-degree fortification, node magnification factor 1.2.
Special for the elderly
Emergency call system cable duct embedded in the space frame
Fire sprinkler/smoke exhaust duct integrated in the grid
Thickened anti-collision design of the ramp area space frame
1.Processing process

Q355B steel pipe is cut and then end taper milled - rod welding - flaw detection - hot dip galvanizing - finally epoxy zinc rich paint spraying.

2. Technical parameters
Rod length tolerance: ±1.0mm
Galvanized layer thickness: ≥85μm (GB/T13912)
Total film thickness: 220±20μm 225μm (average)
Non-destructive testing pass rate 100% Grade II 100% up to standard
1. Installation process
Block hoisting method: Divide the space frame into 16 blocks (single block 25m×25m, weighing 18 tons), and hoist it into place with a 250-ton truck;
Key control points:
Elevation error of bearing embedded plate ≤2mm (calibrated by laser leveler)
Centering accuracy of bolt ball node hole ≤0.5° (re-measured by total station)
Final tightening torque of high-strength bolt 450N·m (spot check rate 30%)
2. Construction schedule
Foundation embedded: 15 days, 72 bearings positioned (error ≤3mm).
Space frame installation: 28 days, average daily installation of 365㎡, maximum daily efficiency of 520㎡.
Roof enclosure: 20 days, double-layer corrugated board + rock wool (U=0.38W/㎡K)
Equipment integration: 12 days, fire protection/lighting/ventilation system debugging.
Total construction period: 75 days, 18 days ahead of the standard construction period.
Easy To Operate

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3. Details and duration of space frame installation
1. Installation process
Block hoisting method: Divide the space frame into 16 blocks (single block 25m×25m, weighing 18 tons), and hoist it into place with a 250-ton truck;
Key control points:
Elevation error of bearing embedded plate ≤2mm (calibrated by laser leveler)
Centering accuracy of bolt ball node hole ≤0.5° (re-measured by total station)
Final tightening torque of high-strength bolt 450N·m (spot check rate 30%)
2. Construction schedule
Foundation embedded: 15 days, 72 bearings positioned (error ≤3mm).
Space frame installation: 28 days, average daily installation of 365㎡, maximum daily efficiency of 520㎡.
Roof enclosure: 20 days, double-layer corrugated board + rock wool (U=0.38W/㎡K)
Equipment integration: 12 days, fire protection/lighting/ventilation system debugging.
Total construction period: 75 days, 18 days ahead of the standard construction period.

Characteristics and applications of plane space frame

Long span column-free space

Economic span of 60-80m (maximum 120m), no internal columns, space utilization rate increased by 30-40%, suitable for warehousing, gymnasium and other needs.

Lightweight and high-strength structure

The steel consumption is only 35-50kg/m² (50% lower than concrete structure), and the rods are made of Q355B high-strength steel pipes, which have light weight and high bearing capacity

Quick assembly and construction

Bolt ball node factory prefabrication + on-site assembly, with an average daily installation of 500-800m², and the construction period is shortened by 40% compared with traditional structures.

Flexible load integration

Grid node pre-buried equipment hanging points (single point load ≥5kN), integrated pipelines, lighting, and sprinkler systems, reducing secondary construction.

Typical application areas

1. Industry and logistics
Large warehouses
Industrial plants
2. Public buildings
Sports stadiums
Transportation hubs
3. People's livelihood facilities
Nursing homes/school canteens
Farmers' markets
4. Energy and environmental protection
Coal storage sheds
Photovoltaic sheds

Technology evolution trend

Intelligentization: implanting optical fiber sensors to monitor stress/deformation in real time (accuracy 0.01mm);
Greening: photovoltaic roof coverage rate > 30%, net zero energy consumption building;
Assembly: modularization rate > 90%, popularization of robot welding (automation rate 60%).