Ø Low strain pile integrity testing by reflected wave method

Applicable standards

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

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

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

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

Ø Technical Code for Detection of Building Foundation JGJ 340-2015

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.

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. Removable lithium battery

Service life is ≥10h, desktop charger is supported and spare battery can be provided to ensure that the field work will not be interrupted.

2. Instantaneous floating point amplification technology

Compatible with the distortionless acquisition of strong and weak signals.

3. Shallow defect location correction

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

4. Field analysis

Filtering, index amplification, defect locating and other analysis functions can be conducted in the field.

5. Sensor compatibility

Piezoelectric sensor and speed sensor are compatible.

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