Applications of fast fourier transform in the integrity evaluation of deep foundations

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dc.contributor.author Abi Shdid, Caesar
dc.contributor.author Hajali, Masood
dc.date.accessioned 2016-10-17T09:30:45Z
dc.date.available 2016-10-17T09:30:45Z
dc.date.copyright 2016 en_US
dc.date.issued 2016-10-17
dc.identifier.issn 0887-3801 en_US
dc.identifier.uri http://hdl.handle.net/10725/4621
dc.description.abstract The widespread use of drilled shafts and the large and critical nature of loads they carry make post-construction quality control a rather important aspect of inspections. For this reason, states have implemented specific procedures to follow when performing inspections of deep foundations. The current accepted approach is to compare, at discrete points of each production shaft, the theoretical concrete volume to that actually placed. Only those shafts with a difference that exceeds a certain prespecified percentage are subjected to additional scrutiny using nondestructive testing methods. This paper reports on an innovative and comprehensive method proposed for the quality control of drilled shafts that overcomes several limitations of conventional methods. The method is developed and validated using experimental data, and is based on applying the fast Fourier transform mapping algorithm on data obtained from cross-hole sonic logging. Tomographic imaging and regression analysis are subsequently used to improve the accuracy of the integrity testing to a degree that facilitates the determination of both the diameter of the shaft and the exact location and size of anomalies. en_US
dc.language.iso en en_US
dc.title Applications of fast fourier transform in the integrity evaluation of deep foundations en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle innovative method for quality control en_US
dc.author.school SOE en_US
dc.author.idnumber 199431340 en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Journal of Computing in Civil Engineering en_US
dc.journal.volume 30 en_US
dc.journal.issue 5 en_US
dc.article.pages C4015001-1-C4015001-9 en_US
dc.keywords Drilled shafts en_US
dc.keywords Nondestructive tests en_US
dc.keywords Concrete construction en_US
dc.keywords Signal processing en_US
dc.keywords Deep foundations en_US
dc.keywords Mathematical models en_US
dc.identifier.doi http://dx.doi.org/10.1061/(ASCE)CP.1943-5487.0000520 en_US
dc.identifier.ctation Abi Shdid, C., & Hajali, M. (2015). Applications of Fast Fourier Transform in the Integrity Evaluation of Deep Foundations: Innovative Method for Quality Control. Journal of Computing in Civil Engineering, C4015001. en_US
dc.author.email caesar.abishdid@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://ascelibrary.org/doi/abs/10.1061/(ASCE)CP.1943-5487.0000520 en_US
dc.orcid.id https://orcid.org/0000-0002-7114-4795

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