Pile Dynamic Analyzer Test Wave Equation Analysis For Pile Driving
The pile dynamic analyzer technology is the most prevalent system for dynamic load testing and pile driving monitoring. The high-strain dynamic load tests, referred to as PDA tests, assess the capacity, integrity, and driving stresses during the installation of driven piles. Further monitoring of hammer energy and efficiency can be made during driving. All testing procedures follow American Society for Testing and Materials International D4945 Standard Test Method for High-Strain Dynamic Testing of Deep Foundations.
Pile dynamic analyer tests are performed during driving on pilot or production piles, taking advantage of the high strain impact provided by the driving hammer. Re-strike PDA tests are often recommended; if the driving hammer is no longer on location, a drop weight may be used to impact the pile.
Engineers can perform this work on both test and production piles using the high-strain impact provided by either an impact hammer or a drop weight. Piles can be steel, concrete, or timber with sensors temporarily attached to the pile which allow for monitoring during driving and collecting data real time. The real-time collection of data allows for more efficient field direction during pile installation.
High Strain Dynamic Pile Testing Advantages
Technical Specification
Main control unit | Low power embedded industrial computer |
Display screen | 8.4" true-color LCD display screen (high-brightness) 800x600 |
Storage | 8G |
Power supply | Built-in high-performance rechargeable lithium battery, ≥6 hours |
Power display accuracy | 10% |
Operation method | Touch screen |
Sampling interval | 5μs ~ 65535μs |
Record length |
1024 dots |
Sample resolution | 24-bit AD |
Signal bandwidth | 1Hz ~ 12KHz |
Floating-point amplifier | ×1~×256 (automatically adjusted according to signal strength, 8-bit floating point) |
System noise | <20μv (accelerometer),<2μv(strain transducer) |
Dynamic Range | ≥100dB |
Data transmission mode | USB |
Number of channels | 5 channels (2 channels acceleration + 2 channels strain, 1 channel with low strain) |
Sensor | Speedometer, front IC piezoelectric accelerometer, strain transducer |
Working temperature | -20℃~+55℃ |
Dimension | 266mm × 180mm × 50mm |
Product images