Do you have a technical challenge? Get in touch with us
Do you have a technical challenge? Get in touch with us
is a fast and reliable method for estimating the bearing capacity of foundation piles. Using a controlled hammer blow, the pile's response is measured and analyzed to assess performance, confirm design assumptions, or optimize installation parameters.
Dynamic load testing involves striking the top of the pile with a heavy hammer (typically during or after installation) while sensors measure acceleration and strain. These signals are used to calculate force and displacement over time. The test provides a quick assessment of load capacity and structural integrity using wave equation-based analysis.
Strain and acceleration sensors are mounted on the pile head before impact.
A drop hammer or driving rig applies one or several blows to generate a dynamic response.
High-frequency data is collected in real time during the impact.
Software calculates the bearing capacity and identifies potential anomalies based on signal interpretation.
This method is often used during pile driving or shortly after installation to validate geotechnical design and improve efficiency.
Sensor installation
Mount sensors and verify secure attachment for accurate signal capture.
Create dynamic force
Strike the pile with a calibrated hammer to generate stress waves.
Real-time monitoring
Collect and store force and velocity signals from sensors.
Estimate capacity
Analyze data using signal matching (e.g. CAPWAP) to determine ultimate capacity
Enables rapid on-site testing during piling operations.
Requires less equipment and time than static load testing.
Provides reliable data for bearing capacity and driving efficiency
Helps verify proper pile installation and detect potential defects
While static testing is the most direct method, dynamic testing provides a fast and reliable approximation of pile capacity when interpreted by experienced engineers.
It is best suited for driven piles but can be used on some bored piles with special equipment and preparation.
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ABOUT THE COMPANY
Geotechnical investigation
We operate in Europe as:
DK
DMT Engineers A/S
DMT Engineers A/S
Skomagervej 13C
7100 Vejle
CVR-np. 12476779
DE
DMT Ingenieure GmbH
DMT Ingenieure GmbH
Zum Audorfer See 9
D-24782 Büdelsdorf
Registergericht: Amtsgericht Kiel HRB 12196 KI
Geschäftsführer: Lars Gøttrup Christensen
USt-IdNr.: DE134866110
Sitz der Gesellschaft: Zum Audorfer See 9, D-24782 Büdelsdorf
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