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Steel frame structure - the space magician of multi-story buildings

  • 2025-06-05

Rising steel structure

Structural characteristics and system advantages

The spatial force system is composed of steel columns (H-shaped steel/circular steel tubes) and steel beams (H-shaped steel/composite beams) through rigid nodes (all-welded/bolted mixed connection), which can achieve a large column distance of more than 9 meters (such as the 8.4-meter column grid commonly used in office buildings). Through the combination of articulated nodes and support systems, it can flexibly adapt to different seismic fortification requirements (up to 8 degrees of fortification).

Applicable building types

Multi-storey commercial: 5-15-storey office buildings (such as SOHO series), the plane can be freely divided to meet the needs of open office

Industrial buildings: heavy-duty factories (such as machining workshops), which can carry bridge cranes of more than 50 tons

Seismic-resistant buildings: high ductility makes it the preferred structure in earthquake-prone areas (such as Sichuan and Japan)

Key parameters for selection

Height-to-width ratio limit: when it exceeds 1:5, a core tube/support truss must be set to control the inter-layer displacement angle ≤1/250

Node form: "strong node weak member" design is preferred in earthquake zones, and the energy consumption capacity is improved by strengthening the node domain

Combined floor: Combination floor with corrugated steel plate (thickness 80-150mm) can reduce the height of steel beams and improve the utilization rate of floor height