Steel formwork for a foundation pier is a reusable mold made of steel plates and stiffeners, designed to shape and support the fresh concrete of a pier (vertical foundation element) until it gains enough strength to be self-supporting.
Structure & Components
A typical steel pier formwork system includes:
|
Component |
Description |
|---|---|
|
Steel panels |
Curved plates forming the pier’s cylindrical or rectangular shape. |
|
Ribs/stiffeners |
Horizontal and vertical steel bars welded to the panels for rigidity. |
|
Bolted or clamped joints |
Connect multiple panel sections together. |
|
Base ring/plate |
Ensures correct alignment with foundation footing. |
|
Lifting lugs |
For crane handling. |
Key Features
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Material: Usually Q235/Q355 mild steel, 3–6 mm thick panels.
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Shape options: Circular, square, or polygonal.
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Height: Usually made in modular segments (e.g., 1.2–2.4 m) for stacking.
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Assembly: Sections bolted or clamped on site for easy installation and removal.
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Surface treatment: Painted or galvanized to resist rust.
Advantages
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High durability: Reusable many times.
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High precision: Maintains exact pier dimensions.
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Smooth finish: Reduces plastering or grinding work.
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Fast assembly/disassembly: Improves project efficiency.
Applications
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Bridge piers
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Building foundation piers
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Transmission tower foundations
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Marine and port pier columns
Typical Installation Steps
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Prepare foundation footing: Ensure leveling and anchor positioning.
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Assemble formwork sections: Bolt/clamp panels around pier rebar cage.
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Align & secure: Use plumb lines, scaffolding, or bracing.
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Pour concrete: Usually in layers to control pressure.
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Curing period: Keep formwork in place until concrete reaches required strength.
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Strip formwork: Use lifting lugs and crane, clean for reuse.