Developments in Thermal Integrity Testing Practice and Interpretation-PPT Presentation

PPT Presentation

Pdf Summary

The presentation reviews developments in foundation integrity testing and how test results can inform decisions, identify significant defects and help prevent their recurrence.<br /><br />Cross-hole sonic logging (CSL) is well established, with extensive case histories, but can face steel congestion and constructability challenges. It focuses on the pile’s core zone. Thermal integrity testing is a more recent method that examines the pile cover zone, but generally cannot be repeated after the test.<br /><br />Fibre-optic sensing is presented as an effective way to conduct thermal integrity testing. Developing reliable assessment criteria requires accounting for measurement accuracy and external influences, including probe and sensor positions, tube position and calibration. The presentation also recommends advanced investigations and numerical methods: 3D tomography can help identify central defects, while thermal-data analysis can reveal defects in the cover zone.<br /><br />Ultimately, a measured anomaly must be assessed in terms of its significance to structural performance. The presentation concludes that testing error thresholds are generally greater than the impact of significant anomalies. Numerical studies, combined with measurements of strain at anomaly locations under load, can help verify assessment criteria.

Keywords

foundation integrity testing

cross-hole sonic logging

thermal integrity testing

fibre-optic sensing

pile defects

steel congestion

3D tomography

thermal data analysis

structural performance

numerical studies