What Is a Vibratory Hammer? How Vibro Hammers Work in Modern Pile Driving
Kim Moon Jung
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A vibratory hammer, also known as a vibro hammer or vibratory pile driver, is a construction tool used to drive or extract piles into or from the ground using vertical vibrations.
Unlike traditional impact hammers that rely on a heavy falling weight, vibratory hammers use high-frequency oscillations to reduce ground resistance,
making them ideal for sheet piles, H-beams, and casing piles.
How Does a Vibratory Hammer Work?
A vibratory hammer generates vibrations using a system of eccentric rotating weights housed within a gearbox.
These vibrations are transferred to the pile, reducing friction between the pile surface and the surrounding soil. As the soil loosens, the pile either penetrates the ground (pile driving) or is extracted more easily (pile extraction).
Most modern vibro hammers, including hydraulic types, are powered by an external hydraulic power pack and operated via a remote control pendant.
This system allows operators to:
· Start/stop the hammer
· Adjust vibration frequency
· Monitor pile clamping status
This ensures greater operational safety and control, especially in constrained work environments.
Key Features of Modern Vibro Hammers
High Centrifugal Force
Ranges from 500 to 4,600 kN, suitable for various soil types.
Frequency Control
Adjustable vibration speed (typically 1500–2000 VPM) matches soil condition for optimal performance.
Hydraulic Clamps
BRUCE vibro hammers include both single and double clamps for sheet piles, H-beams, and casing piles.
Noise Reduction Design
Soundproofed steel frames minimize construction noise in urban or residential zones.
Durability
Built with high-quality elastomers, heavy-duty alloy steel, and oversized hydraulic cooling systems.
For full product feature breakdown, see
Where Are Vibratory Hammers Used?
Vibratory hammers are frequently used in
· Urban construction: where noise and vibration control are critical
· Marine and offshore projects: including seawalls, docks, and cofferdams
· Bridge and highway foundations
Temporary works: where pile extraction is required after completion Their versatility makes them ideal for complex and sensitive job sites.
