Dynamic High Strain Pile Integrity Testing Equipment

Applicable Standards:

1. Standard Test Method for High Strain Dynamic Testing of Deep Foundations ASTM D4945-12

2. Technical Code for Detection of Building Foundation Pile JGJ 106-2014

3. Dynamic Testing Technology Regulations on Highway Engineering Foundation Pile JTG/T F81-01-2004

4. Nondestructive Detection Code for Railway Engineering Foundation Pile TB 10218-2008

Technical Features:

1. Original instantaneous floating point amplification technology can take into account the distortion-less acquisition of strong and weak signals;

2. Removable lithium battery is provided, desktop charger is supported and spare battery can be provided to ensure that the field work will not be interrupted;

3. The bilingual operation in both Chinese and English is supported;

4. The balance of strain bridge can be adjusted automatically to reduce the impacts of initial deformation of strain ring on signal acquisition and eliminate the signal zero drift;

5. The three-dimensional correction function for shallow defect is owned and the defect can be located accurately;

6. Built-in Bluetooth and WIFI can realize the function of real-time monitoring of wireless uploading;

7. With fast signal acquisition pace, the 60 hammers/min signal acquisition can be completed and the piling monitoring testing can be carried out in real time;

8. 8.4-inch true-color LCD screen is used, the curve is clear and intuitive and the backlight can be adjusted;

9. Portable high-strength engineering plastic shell with small volume and light weight can make operation easy;

10. 24-bit A/D combination design has large dynamic range and high signal to noise ratio;

11. Self-test for sensor installation status can be conducted in the field in real time;

12. Touch screen operation, friendly software interface and easy operation;

13. Analysis results by Case method, F-ZV curves and upper and lower traveling wave curves are displayed in the field;

14. With adjustable screen brightness, it can be used in a variety of lighting conditions;

15. Background color and curve color can be adjusted to meet customer needs.

16. Imported connector, adjustable screen brightness.

Software Feature:

High strain analysis software

1. The CASE analysis of high strain bearing capacity detection of single pile and tensile stress and compressive stress analysis of piling monitoring can be conducted;

2. Amplification, translation, rotation, filtering and other processing can be carried out for wave signals;

3. Original curve, velocity curve, force curve, force velocity curve, upper and lower traveling wave curves, displacement velocity curve, energy curve, tensile stress curve and other display modes can be selected for observation, processing and analysis;

4. Output contents can be customized and multiple output methods are supported;

5. CASE damping coefficients can be adjusted conveniently to obtain the calculation results of different JC values.

High strain fitting analysis software (optional)

1.The fitting analysis of high strain bearing capacity detection of single pile can be carried out;

2.Fitting parameters can be adjusted conveniently and quickly and the recommended parameters table is provided so as to grasp the fitting skills quickly;

3.The simulated static load test curve and pile soil resistance distribution diagram can be output;

4.Original curve and fitting calculation curve can be output in a variety of modes;

5.A variety of soil models can be selected to fit a variety of geological conditions in China;

6.The output in Chinese and English is supported and a variety of international codes and requirements are met;

7. Common Windows platform operation makes the system run safely and reliably.

Technical Specification:

Model: GDM-PDT(B)

Display method: 8.4-inch true-color LCD screen

Resolution: 800*600 (adjustable backlight)

Storage capacity: 16G electronic hard disk

Master control system: Low power embedded system

Basic frequency≥1GHz Memory: 512M

Sampling interval: High strain: 10-500μs multi-level adjustable Low strain: 5-1000μs continuous adjustable

Floating point magnification: 1～256

Recording length: 1k

A/D conversion accuracy: 24-bit instantaneous floating point

System noise voltage: ＜20μV

Dynamic range: ≥100dB

Data export method: USB

Frequency bandwidth: 2～12000Hz

Sensor bandwidth: 0.5～9000Hz

Power supply mode: Removable lithium battery; desktop charger is supported. Service life≥8h

Operation mode: Touch screen

Number of channels: High strain: four channels. Low strain: one channel

Acquisition mode: Acceleration for two channels + strain for two channels

Sensor: Piezoelectric accelerometer, strain ring and speedometer

Trigger level: Seven-level select-able

Operating temperature: -20～+55℃

Shell: High-strength engineering plastics

Dimensions: 255*180*60mm

Weight: 1.8kg (including lithium battery)

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