Comparison of Steel Portal Frames
Steel portal frames are categorized based on shape, connection type, and structural behavior. Below are the main types and their key differences:
Span Capacity:
Single-span: ≤40m
Multi-span: Unlimited (with internal columns)
Tapered: Optimized for 30–60m
Connection Rigidity:
Rigid frames resist bending (no bracing).
Pinned frames need bracing but allow thermal expansion.
Cost vs. Performance:
Tapered frames save steel but cost more to fabricate.
Pinned frames are cheaper but less stable in high winds.
Aesthetics:
Curved frames for architectural appeal.
Gable-end frames for traditional looks.
Budget-Conscious? → Single-span pinned frame.
Long-Span Needs? → Tapered rigid frame.
Aesthetic Priority? → Curved or gable-end frame.
Steel portal frames are categorized based on shape, connection type, and structural behavior. Below are the main types and their key differences:
Span Capacity:
Single-span: ≤40m
Multi-span: Unlimited (with internal columns)
Tapered: Optimized for 30–60m
Connection Rigidity:
Rigid frames resist bending (no bracing).
Pinned frames need bracing but allow thermal expansion.
Cost vs. Performance:
Tapered frames save steel but cost more to fabricate.
Pinned frames are cheaper but less stable in high winds.
Aesthetics:
Curved frames for architectural appeal.
Gable-end frames for traditional looks.
Budget-Conscious? → Single-span pinned frame.
Long-Span Needs? → Tapered rigid frame.
Aesthetic Priority? → Curved or gable-end frame.
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