Abstract
Drilled shafts are increasingly being used for foundation support. The quality of the constructed foundation is critical due the heavy foundation loads and limited redundancy of many drilled shaft foundations. On a recent project in the United States, several traditional and newer methods of quality control and quality assurance were used to assess the drilled shaft excavation, base condition, concrete quality, and capacity. The radii, shape, verticality, and volume of the drilled shaft excavation was evaluated with a SHaft Area Profile Evaluator (SHAPE), and the cleanliness of the shaft base prior to concrete placement was assessed with a Shaft Quantitative Inspection Device (SQUID). The placed concrete quality was evaluated with Cross-hole Sonic Logging (CSL) as well as Thermal Integrity Profiling (TIP). Finally, a bi-directional static load test (BDSLT) was conducted on the test shaft to determine the shaft capacity.
This paper will provide a brief review of the QA/QC tests and their results. In addition, the constructed shaft quality information available from similar methods will be compared and discussed including advantages and disadvantages of the respective methods.
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References
AASHTO LRFD Bridge Construction Specifications, 4th Edition: American Association of State Highway and transportation Officials, Washington, D.C., 574 p. (2017)
Brown, D.A., Turner, J.P., Castelli, R.J., Loehr, E.L.: Drilled Shafts: Construction Procedures and Design methods, Geotechnical Engineering Circular No. 10, FHWA Report No. FHWA-NHI-18-024, National Highway Institute, U.S. Department of Transportation, Federal Highway Administration, Washington DC, 754 p. (2018)
Terminology and Evaluation Criteria of Cross-hole Sonic Logging (CSL) as applied to Deep Foundations, Deep Foundations Institute Task Force, Deep Foundations Institute (2019)
Moghaddam, R., Hannigan, P., Anderson, K.: Quantitative assessment of drilled shafts base-cleanliness using the shaft quantitative inspection device (SQUID). In: International Foundations Congress and Equipment Exposition, IFCEE 2018, Orlando, FL (2018)
Piscsalko, G., Likins, G., Mullins, G.: Drilled shaft acceptance criteria based upon thermal integrity. In: DFI 41st Annual Conference on Deep Foundations, New York, NY, pp. 1–10. Deep Foundations Institute (2016)
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Hannigan, P.J., Moghaddam, R.B. (2020). Use and Comparison of New QA/QC Technologies in a Test Shaft. In: El-Naggar, H., El-Zahaby, K., Shehata, H. (eds) Innovative Solutions for Soil Structure Interaction. GeoMEast 2019. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-030-34252-4_7
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DOI: https://doi.org/10.1007/978-3-030-34252-4_7
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