Application

Low strain pile integrity testing by reflected wave method

Applicable standards

Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations ASTM D5882-07

Principle

The test is based on wave propagation theory. The name "low strain pile integrity test" stems from the fact that when a light impact is applied to a pile it produces a low strain meet Deep Foundations ASTM D5882. 

The impact generates a stress wave that travels down the pile. When the downward stress wave encounters a change in cross section or in concrete quality, it generates 

reflected wave that is later observed at the pile top. By analyzing the propagation time, amplitude and phase of that reflected wave, it has evaluation of pile integrity ultimately.

Technical Features

1. Original instantaneous floating point amplification technology can take into account the distortionless 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. Bilingual operation in both Chinese and English is supported;

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

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

6. The multi-hammer superposition in the field can be realized, the signals are average and the analysis results can be saved in real time;

7. Sampling interval can be manually adjusted and signal time travel curve can be compressed and expanded randomly;

8. Index magnification adjustment and index amplification start position adjustment can be achieved through field analysis;

9. The defect location can be calculated, identified and corrected to 0.01m through field analysis;

10. Data can be exported directly by U disk;

11. A variety of imported acceleration sensors can be configured;

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

13. Background color and time travel curve color can be adjusted to meet customer needs and Deep Foundations ASTM D5882.

Software Feature

1. Average superposition analysis of multi-channel collected signal is supported;

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

3. Multiple report output styles can be selected and the report output style can also be customized;

4. Automatic generation function of engineering detection information is owned;

5. Analysis operation can be processed in batch to save the analysis operation workload of the same type of pile;

6. Bilingual operation both in Chinese and English is supported and the output format meets a variety of international codes;

7. Vector diagram output, print output, Word file output and other output modes are supported;

8. The frequency domain analysis function is owned to calculate the whole pile frequency and defect frequency conveniently and quickly.

Specification

Standard Configuration

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